The Speed of Light is NOT About Light

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PBS Space Time

PBS Space Time

8 жыл бұрын

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The speed of light is often cited as the fastest anything can travel in our universe. While this might be true, the speed of light is the EFFECT and not the CAUSE of this phenomenon. So what's the cause? On this week's episode of Space Time, Matt helps explain what the speed of light REALLY is and why it’s the cosmic speed limit of our universe!
"The Real Meaning of E=mc²":
• The Real Meaning of E=mc²
"Are Space And Time An Illusion?":
• Are Space and Time An ...
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SOURCES:
Einstein's derivation or the Lorentz transformation from the invariant speed of light:
Einstein, Albert (1916) "Relativity: The Special and General Theory"
www.archive.org/stream/cu31924...
Lorentz Transformation without invariant speed of light, from relativity, isotropy, and consistency of frame transitions (closure group postulate):
von Ignatowsky, “Das Relativitatsprinzip,” Archiv der Mathematik und Physik 17, 1-24 (1911)
Berzi1 & Gorini, J. Math. Phys. 10, 1518 (1969)
dx.doi.org/10.1063/1.1665000
Pelissetto & Testa, American Journal of Physics, 83, 338, (2015) "Getting the Lorentz transformations without requiring an invariant speed"
arxiv.org/abs/1504.02423
en.wikipedia.org/wiki/Derivat...
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COMMENTS:
Denny Hiu
• What Happens At The Ed...
. (RadimaxRadimaX)
• What Happens At The Ed...
Epsilon Lazerface
• What Happens At The Ed...
LassieDog999
• What Happens At The Ed...
Tenebrae
• What Happens At The Ed...
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REFERENCES:
Krauss & Scherrer 2007 arxiv.org/abs/0704.0221
Vardanyan, Trotta & Silk, 2011 arxiv.org/abs/1101.5476
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Let us know what topics you want to learn more about:bit.ly/spacetimepoll

Пікірлер: 13 000
@t1mec0p
@t1mec0p 3 жыл бұрын
I like that this guy always takes a wide, athletic stance to explain physics
@gandalf8216
@gandalf8216 2 жыл бұрын
When you spit facts, you can't just go full rhetorical, meaning as an educational presenter spitting facts you'll have to use body language for the tonal communication.
@InnocenceExperience
@InnocenceExperience 2 жыл бұрын
Like Ronaldo taking a free kick.
@lsudx479
@lsudx479 2 жыл бұрын
Not that it matters one way or the other, but are you a gay man by chance? I can't picture a woman using the phrase "wide, athletic stance," because it's something a PE coach (or gay man) would say to describe another man's pose. But you're totally right in that observation - and now I can't not notice how wide his stance is. He looks like he's getting ready to drop a duke in a port-o-pottie.
@chadkincham
@chadkincham 2 жыл бұрын
Physics talk requires the Kung fu HORSE stance.
@davidna8573
@davidna8573 2 жыл бұрын
Would you call his stance. . . Physical?
@JJs_playground
@JJs_playground 6 жыл бұрын
Can you explain that thing you said about that stuff.
@LuisSierra42
@LuisSierra42 5 жыл бұрын
The shit moves at maximum speed c
@cgme7076
@cgme7076 5 жыл бұрын
😂😂😂😂
@whatsup2310
@whatsup2310 5 жыл бұрын
Only if the shit has not mass. so farts move at the speed of light?
@huntnwabbits8150
@huntnwabbits8150 5 жыл бұрын
good question, I wondered that myself.
@pastethat
@pastethat 5 жыл бұрын
Whats Up If i recall correctly from my recollection of useless knowledge. When talking about the act of smelling, like a fart, were talking about the nerves in our nose is picking up particles attached to air molecules. In other words, we're smelling the air, which is not massless and travels at the speed of sound at sea level. If something requires a medium to reach you (ie smell and sound), then you already know it can't travel at light speed. And air molecules (doesn't travel in a straight line) bounces around other molecules before the scent travels to your nose, which is why there's a time delay between gas leaving underwear and you smelling a$$. Someone please correct me if I remember / described anything wrong.
@kicapanmanis1060
@kicapanmanis1060 Жыл бұрын
I can't believe Matt's been hosting this show for 7 years. Amazing.
@thevuntzer
@thevuntzer Жыл бұрын
There are 7 years of these vids? I've got some binging to do...
@elijahlupe
@elijahlupe Жыл бұрын
I can't believe he didn't used to have facial hair
@projectmayhem6898
@projectmayhem6898 10 ай бұрын
Matt's accent has gone from Australia to London in that time.
@user-cb4te4cw7b
@user-cb4te4cw7b 8 ай бұрын
​@@elijahlupe8he? Jlnñl❤q on
@lorenzogumier7646
@lorenzogumier7646 11 ай бұрын
This video is unique because it addresses an unspoken detail that has brought about a lot of confusion: speed of light and speed limit are often used interchangeably but in reality are separate concepts
@phuturephunk
@phuturephunk 7 жыл бұрын
"A teensy bit of algebra." Oh you!
@igd2108
@igd2108 7 жыл бұрын
phuturephunk but seriously though the derivation of lorentz transformation doesn't really require higher order maths once you know how 2 reference frame communicates
@JamesNeave1978
@JamesNeave1978 5 жыл бұрын
It's a bit depressing when people have to downplay content containing algebra. It's like everybody what taught that everybody hates it, it's like algebra is a punchline
@wilaustu
@wilaustu 4 жыл бұрын
This man is using the powerest of power stances.
@Napthalicious
@Napthalicious 4 жыл бұрын
I thought it did look a bit like tiger style...
@tylerdurden3722
@tylerdurden3722 4 жыл бұрын
Looks like an 80's pop star pose. Rick Astley or someone. Edit: Freddie Mercurie
@Napthalicious
@Napthalicious 4 жыл бұрын
@@tylerdurden3722 Ha, you said Rick Astley first! Talk about obscure. Never gonna leave you, babe...
@Napthalicious
@Napthalicious 4 жыл бұрын
@Eddie Turbine As you wish...
@Napthalicious
@Napthalicious 4 жыл бұрын
I suppose he is instead uber-famous like Eddie Raven or perhaps Eddie Rabbit? How about Edie for obscure? Enya? I know, the New Bohemians. Rick Astley was a Jordache wearing pre-George Michael wannabe with only one hit during the worst era ever to be a charting musician. A veritable nobody on the 'billboard' of history. In other words: yes, obscure...
@rainmaker709
@rainmaker709 Жыл бұрын
The way that I always described c was "the speed at which a massless wave propagates in empty space." Light happens to be one of these massless waves but there are many others.
@Beansforvavle
@Beansforvavle Жыл бұрын
This perspective is interesting to me, because I work in particle physics and would say the same thing, except I'd say massless particle instead of wave because that's the way I end up thinking about light and gravity more often.
@davidpretorius2984
@davidpretorius2984 Жыл бұрын
It's weird, but learning that there was a speed of causality is very comforting to me... The concept of things being limited to the speed of light was like an itch in the back of my mind
@joostdriesens3984
@joostdriesens3984 Жыл бұрын
Yes, but empty space is not limited by the speed of light and can expand faster, that is why far away cosmic objects are moving away from us faster than the speed of light (because the expanding space in between). The light coming from those objects will never reach us..
@willjaejaeuniverse5150
@willjaejaeuniverse5150 Жыл бұрын
how about u stop being dumb believe man made bs , thankfull thers still ppl like me who have common sense that know that light is not actually moving its made up idea , for example a candle 🕯has light in it and its not traveling to ur eyes when u see it , if u see a light it means u are inside of the area that the light is being emitted , why do yall think that the light is traveling to our eyes 🤣
@willjaejaeuniverse5150
@willjaejaeuniverse5150 Жыл бұрын
@@joostdriesens3984 the only way "speed of light " could make sense is if u holding a light a something like a flashlight and u move it while the light is on , in that situation then u could say the light is moving but even in that situation the light is not actually moving
@dtsai
@dtsai Жыл бұрын
I came to this realization from thinking about how a video game is made. The programmer is God and maybe aka the Universe. The light you see is the End Result of the Video game. But the hardware and code behind the scenes must make that light must move faster than light or before the light moves. In fact, they have measured some sort of weird delay between what actually happens and what you see. Almost like when your screen refresh on your monitor to catch up with the computer calculations... maybe that is like quantum information signals can finalize where the waves intersect to create atoms.
@Chickston
@Chickston 11 ай бұрын
@@joostdriesens3984 Something that really blows me away is the concept of overlapping light cones. Like you can see 1 light year further to your "right" than someone 1 light year to your "left". That means that things in that light year of space exist casually to you, but not to that person 1 light year outside of that light cone. Screw uncertainty, it is certain that points in space can exist and not exist at the same time depending on your point of reference.
@colinmccauley3301
@colinmccauley3301 3 жыл бұрын
there's a janitor at MIT who knows exactly what this guy is talking about
@prathamsharma3101
@prathamsharma3101 3 жыл бұрын
His name might be will hunting
@dvipadapogunuru2309
@dvipadapogunuru2309 3 жыл бұрын
haha😂😂
@thegreathadoken6808
@thegreathadoken6808 3 жыл бұрын
Much more than that, after spending half an hour writing some math on a napkin while drinking coffee, he'll unlock the secrets of FTL propulsion.
@yourname6054
@yourname6054 3 жыл бұрын
But he is not stupid and keeps his mouth shut.
@colinmccauley3301
@colinmccauley3301 3 жыл бұрын
@@yourname6054 a characteristic many of us should adopt
@jochen4207
@jochen4207 5 жыл бұрын
Welcome to another episode of "you won't understand shit but you'll watch the video anyways"
@kristofkovacsRisy
@kristofkovacsRisy 5 жыл бұрын
I fastforwarded...
@sputumtube
@sputumtube 5 жыл бұрын
@Brian Landers Same here but I stuck it out just in case I absorbed some of it accidentally..!!!
@wakeuptruth8736
@wakeuptruth8736 5 жыл бұрын
What is he saying🤔
@valentinjay2737
@valentinjay2737 5 жыл бұрын
Wär halt praktisch, wenns das in mehreren Sprachen geben würde :D
@celtjim994
@celtjim994 5 жыл бұрын
If you'd paid attention in your secondary school science classes you would be able to understand the concepts, maybe not the math. Lose the video games, close your social media apps and start reading.
@user_2793
@user_2793 2 жыл бұрын
Wow, you captured the reasoning behind the Lorentz Transformation so beautifully without doing any math! For anyone who has a good understanding of classical Mechanics, I'd also recommend Leonard Susskind's lectures on this.
@jamesaritchie1
@jamesaritchie1 Жыл бұрын
If you want to keep your sanity, I suggest forgetting Leonard Susskind and going with Lynyrd Skynyrd. Quantum is getting stranger and stranger, and the math is starting to reflect this. It's almost as if quantum theory, or even the universe itself, perhaps, is reacting to the math, which is reacting to quantum theory. The universe is behaving like it isn't real, like it's an illusion, that changes according to what we say it should be.
@thewindgamer2607
@thewindgamer2607 Жыл бұрын
Thank youuu I’ll watch them when i get a good understanding of classical mechanics😂🙏
@bigbeeoei2278
@bigbeeoei2278 Жыл бұрын
Susskind? Idk sounds kinda suss
@JamminClemmons
@JamminClemmons 10 ай бұрын
@@jamesaritchie1 Dis Earth be FLAT you American dum-dum! Americans always so drama full and not thinking, at all times yah!
@ronjon7942
@ronjon7942 7 ай бұрын
Thanks for recommending Susskind! I hope to get lost in some of his playlists, he seems to be an excellent lecturer.
@caseywright619
@caseywright619 Жыл бұрын
I've never understood the speed of light, or causality better. That was an absolutely amazing explanation.
@ChaineYTXF
@ChaineYTXF Жыл бұрын
It is! And you can show actually show the neat result he mentions with high school tools (derivatives, affine functions, a bit of physics), so it's not quite as out of reach as some people might think
@stevehutton6984
@stevehutton6984 Жыл бұрын
@@ChaineYTXF Agreed. I first learnt Newtonian physics at school, with v=u+at and equations like that and it all made sense step by step. Im always on the lookout for a description just as simple for relativity. And this video is nearly there for me. It seems the best way to approach it is forget about light, forget about weird spooky shrinking spaceships, just go back to how space and time works. Im going to watch this a few more times and try working through the maths. The aim being showing Lorentz transformations with meaningful diagrams. Something my brain can hang on to all the way through.
@willjaejaeuniverse5150
@willjaejaeuniverse5150 Жыл бұрын
speed of light is made up bs , for example lets say thers no living being that have eyes that can look the light , lets say when u turn on a light the light doesnt move , all the area that is being iluminated by the light is the area where the light source has enough power to reach the more powerful the light the larger the area it will iluminate and be seen in case thers eyes to look at that light , this is why u point a laser in one direction lets say u point it forward but someone who is in back direction will still see the light
@michaelfox9852
@michaelfox9852 4 жыл бұрын
Theoretical Physics - Exam Question 1: --Imagine Curious George is riding upside down on a skateboard hovering inches above My Little Pony. Also, Curious George is electromagnetic. Calculate the speed of light.
@n0rie9a
@n0rie9a 4 жыл бұрын
its a constant guy
@santhammaamma6024
@santhammaamma6024 4 жыл бұрын
Is the pony a virtual photon?
@santhammaamma6024
@santhammaamma6024 4 жыл бұрын
Then it could produce four dimensional divergence in an anti semetron that produces zero which ,in quantum mechanics, is called light
@santhammaamma6024
@santhammaamma6024 4 жыл бұрын
Otherwise the stuff it produces cannot be identified.
@khalnetherfields7263
@khalnetherfields7263 4 жыл бұрын
hahahaaaaha!! trick question though, right?? man im getting good at this
@GlennWilder
@GlennWilder 5 жыл бұрын
When explaining heavy physics, one must adopt a wide stance to adequately bear the weighty concepts.
@cosmicraysshotsintothelight
@cosmicraysshotsintothelight 5 жыл бұрын
Hehehe... You spelled 'bare' wrong. :-) After all, it was as fleety as a streak of light... do not peer between the legs of that wide stance... one may miss his meaning...
@HAL-nt6vy
@HAL-nt6vy 5 жыл бұрын
Some of us have more Neanderthal DNA than others--check out those eyebrows.
@jerryslater3447
@jerryslater3447 5 жыл бұрын
If "Heavy" Physics are Newtonian and then "Light" Physics must be Einstienian.
@jonnyj.3417
@jonnyj.3417 5 жыл бұрын
Right....?
@painkillerjones6232
@painkillerjones6232 5 жыл бұрын
@@sndgrpr6633 That explains everything!!!
@supremevegetable9452
@supremevegetable9452 Жыл бұрын
"Imagine a pony on rollerblades, with a monkey skateboarding along its back. And make it an electric monkey." I don't think any of us saw that coming.
@tarmaque
@tarmaque Жыл бұрын
Peter Gabriel did. (He sang _Shock the Monkey_ ) kzfaq.info/get/bejne/Y9dgd5CSmL-vgYU.html
@ChaineYTXF
@ChaineYTXF Жыл бұрын
The electric monkey certainly didn't
@DrCorndog1
@DrCorndog1 Жыл бұрын
@@tarmaque No surprise there.
@seankrake4776
@seankrake4776 2 жыл бұрын
I really enjoyed this. I think the thing that applies to my job the most is understanding that while the speed of an electron or other charged particle is fixed and slow, the speed of the magnetic waves propagation is also fixed, but at the maximum speed possible.
@krzysztofczoczynski419
@krzysztofczoczynski419 3 жыл бұрын
I'm binge watching this channel and I wasn't prepared to see him without a beard
@idontwantahandlethough
@idontwantahandlethough 2 жыл бұрын
SO THAT'S WHY HE LOOKED WEIRD! lol thank you, I couldn't figure out why he looked so funny to me, it's 100% the clean shave.
@freshtoast3879
@freshtoast3879 Жыл бұрын
@@idontwantahandlethough this was filmed years ago too
@richardthanmyself290
@richardthanmyself290 Жыл бұрын
He had a beard?
@frankdimeglio8216
@frankdimeglio8216 Жыл бұрын
@@idontwantahandlethough THE MATHEMATICAL AND PHYSICAL PROOF THAT E=MC2 IS DIMENSIONALLY CONSISTENT WITH ONE AND WHAT IS A TWO DIMENSIONAL SURFACE OR SPACE ON BALANCE, THEREBY PROVING THAT ELECTROMAGNETISM/ENERGY IS CLEARLY AND NECESSARILY PROVEN TO BE GRAVITY (ON/IN BALANCE): This also clearly proves ON balance that E=mc2 is directly taken from F=ma. Magnificent. Gravity is a property of SPACE ON BALANCE. It involves adherence or cohesion. So, BALANCED inertia/INERTIAL RESISTANCE is fundamental ON BALANCE. Accordingly, ON BALANCE, TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. Consider what is the man who IS standing on what is THE EARTH/ground (ON BALANCE). What is the blue sky ON BALANCE? This IS the blue EARTH AS this is expressed on balance WITH (or equivalently by) what is the eye. The translucent AND blue sky is consistent with what is BALANCED BODILY/VISUAL (AND electromagnetic/gravitational) EXPERIENCE ON BALANCE, as touch AND feeling BLEND; as ELECTROMAGNETISM/energy is CLEARLY (AND necessarily) proven to be gravity (ON/IN BALANCE). GREAT. The stars AND PLANETS are POINTS in the night sky ON BALANCE, AND consider what is the speed of light (c) ON BALANCE !! Consider TIME (AND time dilation) ON BALANCE. E=mc2 IS F=ma ON BALANCE, AS the rotation of WHAT IS THE MOON matches it's revolution; as ELECTROMAGNETISM/energy is CLEARLY (AND necessarily) proven to be gravity (ON/IN BALANCE). The tides are CLEARLY and necessarily proven to be electroMAGNETIC/gravitational ON BALANCE. I have also CLEARLY explained (ON BALANCE) why THE PLANETS move away very, very, very, very slightly in relation to WHAT IS THE SUN !! I have explained why WHAT IS THE EYE beholds what is then (ON BALANCE) WHAT IS THE BLUE EARTH. Notice the associated black “space” AND DOME regarding what is the eye. Again, the stars AND PLANETS are POINTS in the night sky ON BALANCE. ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE). Very carefully consider what is THE SUN ON BALANCE !! E=mc2 IS F=ma. Again, I have proven AND explained why the rotation of WHAT IS THE MOON matches it's revolution. Gravity cannot be shielded (or blocked) ON BALANCE. What is quantum gravity is CLEARLY fundamental ON BALANCE. Gravity is CLEARLY fundamental ON BALANCE. BALANCED inertia/INERTIAL RESISTANCE is fundamental ON BALANCE. Define “mass". You cannot. BALANCED inertia/INERTIAL RESISTANCE is fundamental. E=mc2 is taken directly from F=ma. CLEARLY, gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites (ON BALANCE); as the stars AND PLANETS are POINTS in the night sky !! Consider TIME (AND time dilation) ON BALANCE. GREAT. You have to CLEARLY AND fully understand what E=mc2 means and represents ON BALANCE. We want to understand the dimensions in a seamless (or balanced) fashion in relation to gravity AND ELECTROMAGNETISM/energy (including what is E=mc2). Consider one AND three dimensional SPACE ON BALANCE. Consider what is the fourth dimension ON BALANCE. NOW, consider all of the following. Consider what is E=mc2. CLEARLY, you have to understand what is a TWO dimensional surface OR SPACE ON BALANCE. c squared CLEARLY represents BALANCED acceleration in conjunction WITH what is NECESSARILY a dimension of SPACE ON BALANCE. The stars AND PLANETS are POINTS in the night sky ON BALANCE, AND consider what is the speed of light (c) ON BALANCE. This CLEARLY AND NECESSARILY represents, INVOLVES, AND DESCRIBES what is possible/potential AND actual ON/IN BALANCE. Carefully consider what is THE EYE ON BALANCE. Great. Consider what is gravity AND E=mc2 ON BALANCE. TIME dilation ULTIMATELY proves (ON BALANCE) that ELECTROMAGNETISM/energy is gravity, AS E=MC2 is CLEARLY F=ma ON BALANCE. Gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE, AS ELECTROMAGNETISM/energy is gravity; AS E=MC2 is CLEARLY F=ma ON BALANCE; AS the stars AND PLANETS are POINTS in the night sky. Accordingly, ON BALANCE, the rotation of WHAT IS THE MOON matches it's revolution. TIME is NECESSARILY possible/potential AND actual IN BALANCE, AS ELECTROMAGNETISM/energy is gravity; AS E=MC2 is CLEARLY F=ma ON BALANCE. The stars AND PLANETS are POINTS in the night sky. Accordingly, ON BALANCE, it makes perfect sense that THE PLANETS (including WHAT IS THE EARTH) will move away very, very, very slightly in relation to what is THE SUN !!! ELECTROMAGNETISM/energy is gravity, AS E=MC2 is CLEARLY F=ma ON BALANCE. Inertia/INERTIAL RESISTANCE is proportional to (or BALANCED with/as) GRAVITATIONAL force/ENERGY, as this balances gravity AND inertia; AS E=MC2 is CLEARLY F=ma ON BALANCE; AS ELECTROMAGNETISM/energy is gravity. GREAT. By Frank DiMeglio
@silversonic1
@silversonic1 Жыл бұрын
I know right? With the beard, he looks like a professor. Without, he looks like a grad student. I guess he suffers from Will Riker Syndrome, aka Baby Face Disease.
@r.1362
@r.1362 4 жыл бұрын
I heard a sonic boom as this video went over my head.
@wyattbrule12688
@wyattbrule12688 4 жыл бұрын
Richard Cassel I’m stealing that line!
@dlk449
@dlk449 4 жыл бұрын
But he dumbed it down by wearing jeans and a t shirt.
@ReyCha96
@ReyCha96 4 жыл бұрын
r/boooom?
@kiiorigin3544
@kiiorigin3544 4 жыл бұрын
Richard Cassel and he stands wired,
@misanthropickryptonian2626
@misanthropickryptonian2626 4 жыл бұрын
That's underrated
@drbonesshow1
@drbonesshow1 Жыл бұрын
We found the speed of light - how incredibly fast it was - but then we found out how incredibly slow it was - considering the size of the Universe,
@intractablemaskvpmGy
@intractablemaskvpmGy 8 ай бұрын
Best comment so far!
@irokosalei5133
@irokosalei5133 6 ай бұрын
Which adds to the idea that the universe is a very messy place and the existence of a potential "designer" very unlikely.
@drbonesshow1
@drbonesshow1 6 ай бұрын
@@irokosalei5133 What you perceive as messy is simply unknown to you. A built-in uncertainty always keeps the creator hidden from inspection.
@HarryHaller1963
@HarryHaller1963 Жыл бұрын
Even though I have a bachelor's degree in mathematics, and a much better understanding of physics than the average college graduate, I'm going to have to watch this a dozen more times to understand it fully. But by the same token (my education and what I've learned from extracurricular study), I can confidently say that this video really does explain everything promised, and more--in an incredibly concise way. Fantastic job!
@schmetterling4477
@schmetterling4477 Жыл бұрын
Mathematics is not physics. It's not even close. Not that a bachelor in mathematics is worth anything. Even my high school math teachers all had a masters degree. ;-)
@kbanghart
@kbanghart 11 ай бұрын
​@@schmetterling4477 so a degree in math is worthless? Lol
@schmetterling4477
@schmetterling4477 11 ай бұрын
@@kbanghart A bachelor's degree is worthless, whether it's in math or hair styling. What employers are looking for in the job market is people with experience. That requires four to ten years of study and active work in the field, at the very least.
@kbanghart
@kbanghart 11 ай бұрын
@@schmetterling4477 thank goodness that was not the case for me and many others.
@schmetterling4477
@schmetterling4477 11 ай бұрын
@@kbanghart They hired you freshly washed out from high school as a hairdresser? Good for you! :-)
@Beccinams
@Beccinams 3 жыл бұрын
Worst drinking game ever: Every time I truly get one of these videos I take a drink. I’m still sober in 2020. One day though. One day.
@stefgori306
@stefgori306 3 жыл бұрын
Do elementary algebra for 2 weeks and you will be ready.
@bronthkestramenk5858
@bronthkestramenk5858 2 жыл бұрын
@@stefgori306 ml m0okn. K.
@alwaysdisputin9930
@alwaysdisputin9930 2 жыл бұрын
lol Rebecca
@georgeb.wolffsohn30
@georgeb.wolffsohn30 2 жыл бұрын
Drink when you DON'T understand one of his explanations.
@brainkill7034
@brainkill7034 2 жыл бұрын
@Rebecca Whip Ovin the thing that matters most is that you haven’t given up yet. We commend you!
@gaminawulfsdottir3253
@gaminawulfsdottir3253 3 жыл бұрын
"How shall we explain causality, the speed of light, and space-time in easy-to-understand terms?" "Let's explain it in terms of a rollerskating pony with a skateboarding monkey on its back... and the monkey is ELECTRIC...!"
@AnupBhatt
@AnupBhatt 3 жыл бұрын
I understood every word of what he said. And TRUST ME, THIS IS, AS EASY AS IT GETS !! I mean you're trying to understand how the blood and bones of the UNIVERSE works !! Trying to tear it's flesh and skin apart !! (Even though just conceptually not really, I know) Frankly, it'd be tough to do a better job than this in simplifying/trivializing this concept for the masses !!
@hivatu
@hivatu 3 жыл бұрын
yeah the guy used the worst possible example to explain this, plus a thousand moving objects in the video distracts from whatever he is talking about
@abaeee
@abaeee 3 жыл бұрын
Good 🐒
@frankdimeglio8216
@frankdimeglio8216 3 жыл бұрын
Society of Physics Students -- UCLA has now given the following writing the thumbs up on their page: THE TRUE AND THE ULTIMATE UNIFICATION OF PHYSICS/PHYSICAL EXPERIENCE IS NOW MATHEMATICALLY PROVEN: Gravity/acceleration involves BALANCED inertia/INERTIAL resistance, AS E=mc2 IS F=ma. ACCORDINGLY, the rotation of WHAT IS THE MOON matches it's revolution. This explains why objects fall at the SAME RATE (neglecting air resistance, of course), AS ELECTROMAGNETISM/ENERGY IS GRAVITY. Gravity IS ELECTROMAGNETISM/ENERGY. "Mass"/ENERGY IS GRAVITY. E=mc2 IS F=ma. ELECTROMAGNETISM/ENERGY IS GRAVITY. Gravity AND ELECTROMAGNETISM/ENERGY are linked AND BALANCED opposites, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. This NECESSARILY represents, INVOLVES, AND DESCRIBES what is possible/potential AND actual IN BALANCE. INDEED, time DILATION proves that electromagnetism/ENERGY IS GRAVITY; AS E=mc2 is DIRECTLY and fundamentally derived from F=ma. "Mass"/ENERGY IS GRAVITY. Ultimately and truly, time is NECESSARILY possible/potential AND actual IN BALANCE; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. E=mc2 IS F=ma. This CLEARLY and truly explains c4 from Einstein's equations. THE FOURTH DIMENSION IS THUS CLEAR, AS ELECTROMAGNETISM/ENERGY IS GRAVITY. BALANCE and completeness go hand in hand. I have mathematically unified physics/physical experience. The stars AND PLANETS are POINTS in the night sky. A PHOTON may be placed at the center of what is THE SUN (as A POINT, of course), AS the reduction of SPACE is offset by (or BALANCED with) the speed of light; AS ELECTROMAGNETISM/ENERGY IS GRAVITY. It all CLEARLY makes perfect sense. E=mc2 IS F=ma. Time DILATION proves that electromagnetism/ENERGY IS GRAVITY, AS E=mc2 IS F=ma. GREAT !!! IT IS CLEARLY PROVEN. INSTANTANEITY is thus CLEARLY FUNDAMENTAL to what is the FULL and proper understanding of physics/physical experience. (Very importantly, outer "space" involves full inertia; AND it is fully invisible AND black.) By Frank DiMeglio
@johnpapish9409
@johnpapish9409 3 жыл бұрын
@@frankdimeglio8216 not sure i understood all that, from what i understand, 'gravity' is not a force but the curvature of spacetime warped by mass, not necessarily caused by electromagentism, but either you are a misunderstood genius, or offbase, thanks
@nacimsadaoui3923
@nacimsadaoui3923 2 жыл бұрын
This is one of the best explanation of this topic. Most of other videos repeat the same thing without providing a consistent logical story. Thanks a lot.
@JohnSchroeder777
@JohnSchroeder777 2 жыл бұрын
Thank you!! I have always wondered about why the speed of light was used!! Seeemed like a random high number but explaining it as the fastest way to propagate causality it makes sense!!
@davidrees1840
@davidrees1840 Жыл бұрын
because it's the only one you can see?
@jackwright3996
@jackwright3996 4 жыл бұрын
It's such a trip listening to your native language and having not even the slightest idea of what is being conveyed.
@freddieh5539
@freddieh5539 4 жыл бұрын
Haha...try watching the video about the Turbo Encabulator.
@dinhnguyen2110
@dinhnguyen2110 4 жыл бұрын
@@freddieh5539 No, I understood that one. It is literally made to convey nonsense in a sophisticated manner.
@user-wn3oq2yf3h
@user-wn3oq2yf3h 4 жыл бұрын
Imagine, how insane is an idea to use this video to improve my English))
@jodiaxenva5643
@jodiaxenva5643 4 жыл бұрын
Much this video is going much faster then the Speed Of Light But is an Okay Sets of Rules by Great Mathmaticans and Great Videos
@EspenFrafalne
@EspenFrafalne 4 жыл бұрын
I thought it was just me having been on a 3 day alcohol binge, and not being able to pay attention, LOL :P
@ItsTheCookingBooth
@ItsTheCookingBooth 3 жыл бұрын
This man stands like he’s about to block a defensive end.
@romancotton8536
@romancotton8536 2 жыл бұрын
lmao
@trumanhw
@trumanhw 2 жыл бұрын
This episode was as accurate PBS news or documentaries have become since 2016. making their name stands for pure something or other ... WHY should everyone's CLOCKS reconcile off the speed of light ..? whether they're travelling 99.99% the speed of light -- and shoot a laser in front of them (or turn on their headlights) ... only for their clocks to slow concomitant to their relativistic speed, such that they perceive the speed of that light to simply be "C" despite their speed also being indistinguishable from C ..? WHAT OTHER than light is demanding this reconciliation. This claim is PURE POOP. (Much like the 10 hit pieces they did on orange man. Pure dookey of a MALE-COW ... which are words this channel is just TOO insecure to endure ... as if they knew they were true!? lol. Talk about reconciliation!
@knapret
@knapret 2 жыл бұрын
@@trumanhw Time dilation is not something PBS made up. Ever heard of Einstein and his theory of relativity? That theory has been proven accurate again and again through experiments. If you want a real life everyday example, read about satellites in orbit around Earth where time dilation occurs exactly as predicted by that theory and therefore we can compensate for it.
@brainkill7034
@brainkill7034 2 жыл бұрын
@@knapret maybe he hasn’t ever heard of GPS before 😂
@acrobatmapping
@acrobatmapping 2 жыл бұрын
Question- some galaxies are so far away from us that even at the speed of light we could never get to them. If the speed of light is actually the speed limit of causality in the Universe rather than just a speed limit, then how could galaxies this far away possibly have any gravitational effect on us since we are moving apart faster that the speed of causality could reach us?
@macdmacd7896
@macdmacd7896 2 жыл бұрын
those responsible to answer are visiting the shrinks.
@OzoneTheLynx
@OzoneTheLynx 2 жыл бұрын
While today they are too far away for new information to reach us, the gravitational effect information of today left long ago when we were still reachable, it just took until now to reach us. While there is the gravitational effect of the past versions of those galaxies, there will never be such a gravitational effect from those galaxies as they actuallly are right now. Just like we see them now the way they were long ago, but will never see them the way they actually are right now.
@joyalsaju8878
@joyalsaju8878 2 жыл бұрын
@@OzoneTheLynx well said
@timothyfountain3399
@timothyfountain3399 Жыл бұрын
@@OzoneTheLynx yes indeed, well said.
@popscola2574
@popscola2574 Жыл бұрын
How could the universe be bigger in size than it is in age? Dosent that prove expansion is faster than the speed of light?
@ForumArcade
@ForumArcade 5 ай бұрын
We need a finite speed limit for our *experience* of reality, which is also what space-time is fundamentally defined according to. There are unanswered questions about the nature of that experience though, and it's worth considering that on some deeper level, everything does exist as a hole, cohesive, "here and now". Both could simultaneously be true.
@whodey2112
@whodey2112 5 жыл бұрын
I'm SO glad there's no test at the end of this video.
@Bgrosz1
@Bgrosz1 5 жыл бұрын
I would just use "Lorentz Transformation" for every answer.
@arneljoseph211
@arneljoseph211 4 жыл бұрын
Id probably answer only one question, the correct spelling of LiGHT 😂😂😂
@SWillis
@SWillis 3 жыл бұрын
I'm so glad there is an end to this univ--er, video.
@rahulnamaste
@rahulnamaste 8 жыл бұрын
The only thing i understood was Wingardium Leviosa.
@RomanHorvath-1978
@RomanHorvath-1978 8 жыл бұрын
+Rahul pandey :-) I could say that my brain produced as much heat that my left half welded to the right half, so I should be smarter now, but it seems to have zero effect… :-/ :-)
@RomanHorvath-1978
@RomanHorvath-1978 8 жыл бұрын
Human beings are maybe wonders of nature - no other intelligent life form in the universe can understand how they did so far with such small brains and almost no intelligence… :-D :-P
@dangerousdingo8846
@dangerousdingo8846 8 жыл бұрын
+Rahul pandey Don't worry about that. That was the only thing in all of that which they will admit is ficticious.
@Luisfernando-du2fj
@Luisfernando-du2fj 8 жыл бұрын
+Rahul pandey jajaja no eres el unico, aunque entendi mucho, se me dificulta un poco el hecho de que no sea de habla inglesa.
@Bobay4224
@Bobay4224 8 жыл бұрын
+Dennis Magee not Levi-oh-SAH
@mattdangerg
@mattdangerg Жыл бұрын
They've gotten a lot better at explaining this stuff in laymen's terms in the newer videos
@DrCorndog1
@DrCorndog1 Жыл бұрын
I'm not sure how they could have improved the clarity, if that's what you mean. But they did get a bit hand-wavey at a couple points, so maybe you mean they've gotten better about going into relevant details while still keeping the videos digestible.
@mattdangerg
@mattdangerg Жыл бұрын
@@DrCorndog1 I meant what I said
@halweilbrenner9926
@halweilbrenner9926 11 ай бұрын
Yeah OK
@irokosalei5133
@irokosalei5133 6 ай бұрын
Perspective, I liked the more straight forward explainations, surely less funny, of the previous host. (he's called Dave and the current one is Matt)
@njdoughboy
@njdoughboy Жыл бұрын
best episode so far. you fixed many broken thoughts in my head, thanks.
@whatshouldinamemyself481
@whatshouldinamemyself481 4 жыл бұрын
the way he stands makes me think he's gonna run away
@peurmartis641
@peurmartis641 3 жыл бұрын
lmao dude this keeps cracking me up for some reason
@Ginni14328
@Ginni14328 3 жыл бұрын
That literally make me laugh too hard for a min 😂😂😂😂
@HAL-nt6vy
@HAL-nt6vy 3 жыл бұрын
He gonna need hip replacement afore he's fifty.
@JohanKrugerHaglert
@JohanKrugerHaglert 3 жыл бұрын
Well he can't be going too fast.
@whatshouldinamemyself481
@whatshouldinamemyself481 3 жыл бұрын
@@JohanKrugerHaglert at the speed of light
@TheMarcMan
@TheMarcMan 7 жыл бұрын
Not going to lie, I wasn't prepared for this
@geekjokes8458
@geekjokes8458 7 жыл бұрын
me neither, his lack of beard is scary
@doncourtreporter
@doncourtreporter 7 жыл бұрын
Keep it up. I'm 65. Still LEARNING. These lectures are worth 100 thousand a year.
@KCstrick
@KCstrick 7 жыл бұрын
GeekJokes
@HughMcGuire
@HughMcGuire 7 жыл бұрын
Nicolas Fredette I'd reccomend reading the book before watching the series, although the series is great too and I agree with your views on Sagan vs Tyson.
@doncourtreporter
@doncourtreporter 7 жыл бұрын
I saw Cosmos when it first was presented by Sagan, and later saw the series hosted by Tyson. Thanks.
@franimal86
@franimal86 2 жыл бұрын
Mentioning gravitational waves in the examples of massless particles made me do a deep dive into what a wave (sound, light, literal waves in the ocean) is. And why it is that electromagnetic waves are different than sound waves.
@stephenrice4208
@stephenrice4208 2 ай бұрын
Question on one way light speed: 1. Can you take electron A and electron B and entangled them and separated them by a logical quantified distance that would allow for a very accurately measured speed of light. 2. located a light source at electron A. 3. Locate a timer and light sensor at electron B 4. used triggered change in electron A to simultaneously (or infinitely close), initiate the light source as well as the simultaneous change in electron B, and simultaneously (or infinitely close), use the change in electron B to start the timer, and when the light source hits the light sensor use the sensor to simultaneously(or infinitely close), stop the timer. 5. Then take the clock time and subtract the near simultaneous trigger time from electron A to the light source, and the near simultaneous trigger time from electron B to the timer, and the near simultaneous trigger time from the sensor stopping the timer, and thereby calculate one way speed of light across a quantified distance. Would this work to measure the one way speed of light and could this time be used to better identify the speed of the second leg of the two way light speed measurement?
@elbanj
@elbanj 4 жыл бұрын
I'm loving these tutorials. I can almost get my head around some of the key concepts. I feel really smart for about a week and then the details start becoming vague and I'm back to being a bit thick. Great stuff mate!
@bobbob-sv4mk
@bobbob-sv4mk 4 жыл бұрын
stuart woodings Same!
@mrstealyorefrigerator2588
@mrstealyorefrigerator2588 3 жыл бұрын
Make notes!
@JoeNietzsche
@JoeNietzsche 3 жыл бұрын
Thanks, Stuart. Thought I might be alone on that. Cheers :)
@darthvader4160
@darthvader4160 3 жыл бұрын
Bullshit
@Ratciclefan
@Ratciclefan 3 жыл бұрын
Same
@jondunmore4268
@jondunmore4268 5 жыл бұрын
2:54 -- What I learned from this video is that a baby unicorn is also called a pony.
@jamesthomas5993
@jamesthomas5993 5 жыл бұрын
barbies pony at that
@BetterBlue
@BetterBlue 5 жыл бұрын
I like that. Bless you.
@jamesthomas5993
@jamesthomas5993 5 жыл бұрын
I have one for females too, its why do female put a ring thru there clitoris,? its so they have a hitching post for that string
@jamesthomas5993
@jamesthomas5993 5 жыл бұрын
just wanted to try another on you, you heard about edible pantys I have something for older folkes , cotton candy filled edible depends with chocolate spots its a meal for both. that's all folks im the comedy commentor
@RobD2000
@RobD2000 4 жыл бұрын
They're rhinoceros'!
@FD_Stalker
@FD_Stalker 2 жыл бұрын
This very same video has been stuck in my youtube front page for whole week and I finally decided to watch this
@borisspiranec7539
@borisspiranec7539 Жыл бұрын
Great! Inspirable! It seems that defining nature of "format", articulated mathematically, will help us overcome many of paradoxes, which are in strict co-relation with nature of "format".
@antoniolewis1016
@antoniolewis1016 8 жыл бұрын
I'm a physicist and I love you for explaining this so well. Can't wait till virtual hugs are a thing.
@HAL-nt6vy
@HAL-nt6vy 5 жыл бұрын
@Antonio Lewis Whoa there fella. Didn't you see that wide stance? A virtual "hug" is not on the program.
@aethervortex
@aethervortex 5 жыл бұрын
You're no "physicist" Antonio if you took any of that BULLSHIT seriously!
@ihsahnakerfeldt2765
@ihsahnakerfeldt2765 5 жыл бұрын
@@aethervortex Can you elaborate?
@Pados_music
@Pados_music 4 жыл бұрын
@@ihsahnakerfeldt2765 Are you kidding? Tesla's face shows he's just anonter fanatic who thinks that everything is a huge conspiracy. They cannot support their idea but they are always willing to slander a scientific theory.
@Jkirk3279
@Jkirk3279 4 жыл бұрын
“Assume the Universe makes sense”. Oh, and he was doing so well !
@tomgreen1779
@tomgreen1779 4 жыл бұрын
The universe makes sense. He just can't make sense of it.
@No-oneInParticular
@No-oneInParticular 4 жыл бұрын
@@tomgreen1779 so profound.
@achyuththouta6957
@achyuththouta6957 4 жыл бұрын
@Geo Thomas The universe doesn't make sense because every observer measures the universe differently. Somebody in motion will have a velocity and his time would be slower than your time if you are at rest. So technically your past is that person's present. Hence there's no reference frame to describe reality. We perceive reality through reference frames. The only thing that you and that guy in motion can agree upon is space time interval or space time. That's the only thing which every single observer can agree upon and that is the only reality. The universe the way you perceive it is only real to you and you only. But only space time is real for everyone
@achyuththouta6957
@achyuththouta6957 4 жыл бұрын
@@tomgreen1779 I don't think you understood what he said.
@lopezb
@lopezb Жыл бұрын
I've heard all the words before, and already know most of the math, but this is the first time it starts to make some sense. Very useful explanation- he really does know what he is talking about, and doesn't BS the audience.
@bomination.
@bomination. Жыл бұрын
how is the greater energy of a UV photon expressed ? is it bigger , faster ? it must be one or the other ! my theory is that low energy photons travel like this \/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\ while higher energy photons have a longer path like WWWWWWWWWWWWWWWWWWWWWWW the cover the distance as the crow flies in the same time but the actual speed of the photons is different .
@gregtaillon4019
@gregtaillon4019 Жыл бұрын
It's pretty enormous that c= the "speed of causality" and not merely the 'speed of light'; this is something so fundamental and intrinsic to even understanding the EXPLANATION of all other concepts, that I am genuinely behooved that it isn't immediately foregrounded and demystified in any of the other basic introductions to astrophysics. (Including this series - but kudos for finally getting there.) Hundreds of hours of videos purporting to "explain" astrophysics, and to date, this is the first one which finally desubstantializes the hypostasis of "light-as-a-thing" against which all is measured, or worse still, the (ab)using of the term "photon" as shorthand for that speed, or its us a metaphor for causality of all other forces. It's amazing, really, the arrogance that physics has in assuming this is either known, assumed, or expected of anyone when it proclaims eg continental philosophy to be opaque.
@evloh
@evloh 8 ай бұрын
Yuk, you are so embarrassing... Get real. This is NEVER how these ideas are taught in hs/ap physics and even into college level physics. To suggest otherwise is totally disingenuous. You aren't brilliant or special; else u wouldn't feel the need to lie on KZfaq comments. This is such try hard gibberish... it just hurts me at my core. Also, let's just address that this video has been proven totally wrong, not just mathematically, but experimentally through quantum entanglement experiments just to name one of several other things.... heres a few low hanging otbers: *string theory/ holographic universe/ conservation of information. Yuk sir, yuk.
@ariellopez8736
@ariellopez8736 6 жыл бұрын
yeah you lost me from 0:00 to 12:46
@thedelacruz
@thedelacruz 6 жыл бұрын
Ariel Lopez I've heard this explained much simpler. He speaks too fast and convoluted.
@romanopaso
@romanopaso 6 жыл бұрын
its like he is rushing to take a shit.
@PRdeSO
@PRdeSO 5 жыл бұрын
I used to be smart, and then I watched Space Time.
@corriethomson2916
@corriethomson2916 5 жыл бұрын
Sewer Man beats being a fucking douche bag P.S it's You're, fucking dumbass
@titobruckner5628
@titobruckner5628 5 жыл бұрын
Ariel Lopez and elnubnub=nice people (and funny). Jacob Turnbaugh and Sewer Man=mean people (and a bummer).
@jamesroyle6888
@jamesroyle6888 5 жыл бұрын
I might as well have just watched a knitting tutorial in mandarin.
@petetong9725
@petetong9725 4 жыл бұрын
Knitwit...lol
@SpaceGirlLovesTacos
@SpaceGirlLovesTacos 4 жыл бұрын
Lol for real. I was lost immediately.
@TheSmileyTaste
@TheSmileyTaste 4 жыл бұрын
😄😂
@zlac
@zlac 4 жыл бұрын
A knitting tutorial in mandarin? You would probably learn something about knitting even from THAT!:D
@paulschuurmanspetrovic7770
@paulschuurmanspetrovic7770 4 жыл бұрын
I dont LOL very often, but you did the trick (o:
@PSwayBeats
@PSwayBeats Жыл бұрын
I really like how you did this video you should start doing this again give an examples of what you're talking about and what you're saying on the screen is really cool makes everything easy to understand
@jdrake411
@jdrake411 8 ай бұрын
I enjoy Matt's videos so much! I'm usually just "hanging on" as he bobs and weaves through the math sometimes, but I always learn something fun and important!
@orenmashko1177
@orenmashko1177 4 жыл бұрын
'You can't move faster than the speed of light in the same way you can't move slower than standing'
@RafaelCruzPodcast
@RafaelCruzPodcast 4 жыл бұрын
Great commentary!
@vume7722
@vume7722 4 жыл бұрын
The big bang tells us that you can not standstill completely in the universe , the expansion triggered by that moment of the big bang in getting faster and faster.
@randomguy263
@randomguy263 4 жыл бұрын
@@vume7722 | Well, spacetime is increasing, that doesn't mean that you move. You do move because of gravity, though. And the heat in your body.
@DaxFlyingwoodHunter
@DaxFlyingwoodHunter 4 жыл бұрын
LOL im crying
@kingwillie206
@kingwillie206 4 жыл бұрын
Random Guy - No, Vu is correct in a literal sense. We are always in motion because the Earth is in motion and we are on it, the Earth is spinning at around 1000mph in addition to that movement, the galaxy is moving, and everything else in space is moving along with expanding empty space. The consequence is the inability to truly be still and a Universe without a center point.
@brianpso
@brianpso 8 жыл бұрын
Every century we have new geniuses that change the way we think about the universe as a whole. I'm very anxious to know which one we will live to see, in this century.
@Feynstein100
@Feynstein100 8 жыл бұрын
+brianpso Your search is over. It's me. JK.
@joventlk7300
@joventlk7300 8 жыл бұрын
The new genius is 001nietsnyef
@Feynstein100
@Feynstein100 8 жыл бұрын
TLK Dragon Who is that?
@joventlk7300
@joventlk7300 8 жыл бұрын
Flip the name
@Feynstein100
@Feynstein100 8 жыл бұрын
TLK Dragon Oh. Thanks for believing in me. :D
@James_Knott
@James_Knott Жыл бұрын
This reminds me of what one of my cousins is involved with. He's a physicist who was studying neutrino oscillations. The point was to determine whether neutrinos have mass. If they didn't, they couldn't oscillate between three types. However, since they do oscillate, they must have some mass. This also means they don't travel at the speed of light.
@nmarbletoe8210
@nmarbletoe8210 Жыл бұрын
neutrinos rock
@andrewz2854
@andrewz2854 9 ай бұрын
@@nmarbletoe8210fr fr neutrinos are lit af
@carlobuongiovanni7934
@carlobuongiovanni7934 2 жыл бұрын
This is the first explanation that gave me an intuitive view on why there is a maximum speed in this universe, like this speed keeps everything in existence. For the same reason there would be a different speed in a different universe made of different kind of structure of the matter? just a possibilty? And if yes, what could be the effects on an object coming from this universe to the other one with a different maximum speed?
@Drunk3nMonk3y72
@Drunk3nMonk3y72 4 жыл бұрын
Four years too late. But this comment section is hella funny
@earthygreen
@earthygreen 4 жыл бұрын
I just got here, and I agree. lol
@ballelort87
@ballelort87 4 жыл бұрын
No worries, we're keeping it alive breh
@SkiingxMoose.
@SkiingxMoose. 4 жыл бұрын
The youtube algorithm is keeping this series timeless
@fox_the_apprentice
@fox_the_apprentice 4 жыл бұрын
It feels fantastic and we're, still alive!
@sgtcojonez
@sgtcojonez 7 жыл бұрын
I feel so stupid watching these videos.
@writabratamukherjee3941
@writabratamukherjee3941 7 жыл бұрын
yup
@lost_valley
@lost_valley 7 жыл бұрын
I imagine you would need to be a lot smarter than Einstein to be able to understand all this concepts just by watching a 12 min video...
@lost_valley
@lost_valley 7 жыл бұрын
Like Neo in the Matrix :)
@dpactootle2522
@dpactootle2522 7 жыл бұрын
When you get your PhD in physics you will understand all this very easily. In the meantime is just words.
@khalilrahme5227
@khalilrahme5227 7 жыл бұрын
dpactootle i am at the last class of highschool and i am understand the majority of what he is saying.
@masonjohnson4310
@masonjohnson4310 Жыл бұрын
I do wonder what would change if the speed of light/causality was different. Would chemistry be different, for example? Would time be faster? Etc.
@juminrhee4255
@juminrhee4255 Жыл бұрын
I've wondered about the inverse square (gravity, light, etc) vs the inverse cube (magnetism). What if gravity and light were inverse cube while magnetism was jumped up to inverse quad (-x⁴)?
@Chewbacca0702
@Chewbacca0702 Жыл бұрын
Now the question becomes, if the Lorentz equation places a limit on the rate of information moving through the universe, but the universe is expanding, then if light travels for a long enough time, has it exceeded the speed limit from the frame of reference of its origin? Or is this somehow the explanation for red shifting... excuse me while I get some Tylenol or paracetamol if you wish
@highwaystar4518
@highwaystar4518 Жыл бұрын
no i dont wish you to cure your headache i want you to suffer
@MrPooPooJohn
@MrPooPooJohn 3 жыл бұрын
1632 is also the year One Eye'd Willie's ship, _The Inferno_ sailed across the Atlantic (and then somehow all the way under South America) the up the Pacific and hid his treasure in a cave in Astoria Oregon.
@zebedie2
@zebedie2 3 жыл бұрын
The speed of light is related to the simulation draw distance, it can be altered via a slider in the game settings.
@pavelborisov515
@pavelborisov515 Жыл бұрын
Thanks, it helped
@fungushoney9958
@fungushoney9958 Жыл бұрын
Now I’m wondering what effect cranking the speed of causality up would have on gravity and the passage of time
@janinepeters6416
@janinepeters6416 3 ай бұрын
You’ve got a new fan as of today 👍👏 thx for the clear and fun explanation
@ImprovisedExpletiveDevice
@ImprovisedExpletiveDevice 9 ай бұрын
Never thought I'd end up watching so much PBS in my adult life. Loved the programs as a kid and they have just kept up with my (limited) intelligence. Great being at the center of the bell curve....
@redblade8160
@redblade8160 3 жыл бұрын
The speed of light is not about light, it's about paying the electric bill.
@Sohlstyce
@Sohlstyce 3 жыл бұрын
LOL
@jamesferrell336
@jamesferrell336 3 жыл бұрын
and if you don't pay it they will cut you off at the speed of light
@enricoquintavalla1278
@enricoquintavalla1278 3 жыл бұрын
you are a genius
@helicopter2293
@helicopter2293 2 жыл бұрын
🤣
@rabin_7
@rabin_7 4 жыл бұрын
Don't get confused guys That heavy stance is for directing his mystic energy to make letters, pictures and himself to float around in space
@frepi
@frepi 4 жыл бұрын
Yeah...I had the impression that he was doing his Dr Strange impression
@TheCarnage2001
@TheCarnage2001 4 жыл бұрын
underrated comment!
@anglewyrm3849
@anglewyrm3849 2 жыл бұрын
The word Causality in my mind refers to the relationship between cause and effect. It seems to be used somewhat differently in this video, defining the temporal order of observable events, a before and an after.
@narfwhals7843
@narfwhals7843 2 жыл бұрын
The cause comes before the effect. That is how we an relate causality to time.
@DrWhom
@DrWhom Жыл бұрын
yes, the kind of causality you are thinking about is what most people have in their heads, as a general sort of common sense notion. However, this notion is not well understood and it is not even clear that it is a real "thing" - it could well be that the universe gets by without any sort of cause and effect, and it is just a thing we made up having evolved as primates solving everyday problems. By contrast, the casualty we talk about in physics is a much more restricted concept with a precise mathematical circumscription. The relationship between these two kinds of causality is that the more precise one places bounds on how the more general one could act.
@DrWhom
@DrWhom Жыл бұрын
@@narfwhals7843 You can only claim that cause precedes effect if you have made precise what cause and effect actually _are_ . That is not at all clear to me!
@narfwhals7843
@narfwhals7843 Жыл бұрын
@@DrWhom You're right, it isn't just as clear cut. If you're interested, physicist Sean Carroll has a podcast on the topic talking to computer scientist Judea Pearl kzfaq.info/get/bejne/b7yjh9OkqcXIgGQ.html
@robhp1
@robhp1 6 ай бұрын
Mind blowing 🤯 watching these videos is like going from sofa to Pilates with no yoga intro. Re-wiring..
@MrManerd
@MrManerd 7 жыл бұрын
You know, I almost closed this video half way through. I'm glad I stayed till the end,,, him reading the comments was awesome.
@unsubme2157
@unsubme2157 7 жыл бұрын
MrManerd read this as i was about to click off lol
@MrManerd
@MrManerd 7 жыл бұрын
Yeah, it was kinda like a "Reads Mean Tweets" segment.
@unsubme2157
@unsubme2157 7 жыл бұрын
Was worth it lol. I always forget this guy has a good long end segment
@robertcousins1265
@robertcousins1265 7 жыл бұрын
that's what she said
@MICRORuchit
@MICRORuchit 3 жыл бұрын
All was going well. I was getting the courage to make a statement in my head that I understand what he is saying... but then... he decided to make the monkey magnetic.
@johnkelly6809
@johnkelly6809 3 жыл бұрын
me too... except that then he started to speak... I get the feeling that even HE understands F/A of his own drivel.
@marcustrevor1883
@marcustrevor1883 2 жыл бұрын
@@johnkelly6809 It does make sense if you have taken physics classes. The fact that moving charges generate forces is something you learn fairly early on. The monkey pony thing is just demonstrating different reference frames and perspectives.
@alwaysdisputin9930
@alwaysdisputin9930 2 жыл бұрын
@@marcustrevor1883 No matter how many physics classes we've done, this video doesn't give ANY reasons why causality has a maximum speed nor why the speed of causality = c. I mean you don't have any reasons do you?
@noah9942.
@noah9942. 2 жыл бұрын
@@alwaysdisputin9930 from what I can tell, it doesn't go into why causality has a limit, just that it does and why it's important, and why that means light moves at that speed.
@idontwantahandlethough
@idontwantahandlethough 2 жыл бұрын
​@@alwaysdisputin9930 Yeah. I wish they would have gone deeper into actually explaining _why_ that is the case; it's pretty interesting stuff and this would have been a great video to explain it. I bet there's another video on this channel somewhere where he goes into it in more depth, but it would have fit well into this video and it's confusing enough that it wouldn't be the worst thing in the world to repeat it in multiple videos!
@kevinfurlong1167
@kevinfurlong1167 4 ай бұрын
Dis explains alot for me. Also creates alot of questions. Like why I'm ready poor comments from people who should just say something nice or say nothing. I really enjoyed it. Thank you
@greenspeed3619
@greenspeed3619 2 жыл бұрын
Thank you for the good content. Really enjoyed it.
@HarshRajAlwaysfree
@HarshRajAlwaysfree 4 жыл бұрын
My brain is more focused on his lack of beard
@matthewweflen
@matthewweflen 4 жыл бұрын
I'm 12 seconds into the video and I wholeheartedly agree.
@elinicoritale6384
@elinicoritale6384 4 жыл бұрын
Right? So weird 😂
@melonshop8888
@melonshop8888 4 жыл бұрын
HE NEED THE HAIRCUT NOT BEARD 😄🤣😋
@andrewlankford9634
@andrewlankford9634 4 жыл бұрын
Yeah, he can't be a real physicist. With that lack of a paunch, the reason he's wearing that t shirt can only be to show off his physique. I know of no real physicists who are into that sort of thing.
@pruje
@pruje 4 жыл бұрын
He was way hotter with the beard.
@russellthorburn9297
@russellthorburn9297 3 жыл бұрын
By necessity he's just skimming the surface of the underlying mathematics and physics but he served up as clear an explanation of why "The speed of light is not about light" as one can do given just under 13 minutes.
@alwaysdisputin9930
@alwaysdisputin9930 2 жыл бұрын
Clear as mud more like. This video is a waste of time. Nobody learnt anything. Nobody here can say why 'The speed of light is not about light'. It is possible in 13 minutes but the YT videos don't exist yet
@venus_de_lmao
@venus_de_lmao 2 жыл бұрын
@@alwaysdisputin9930 just admit you didn't understand it and move on
@kingmasterlord
@kingmasterlord 2 жыл бұрын
"existence is resistance" I mean, doesn't that cover it?
@rusttynail77
@rusttynail77 2 жыл бұрын
@@alwaysdisputin9930 He literally said it does describe light but its the speed of causality first. did you watch the video?
@alwaysdisputin9930
@alwaysdisputin9930 2 жыл бұрын
@Music:Zerg Yeah you're right. There is no proof that there is a speed of causality so it's not possible to prove in 13 minutes
@williamthorn1312
@williamthorn1312 7 ай бұрын
I understood most of this. Fascinating. Thank you so much for your clear way of explaining this crazy complex matter. Also amazing that the ancient ones could understand this all without measuring equipment and on top of that, having to hide from zealots. ❤
@the-aphelion-archives
@the-aphelion-archives 7 ай бұрын
I really love how you specifically chose Princess Luna as the pony for this video
@mrv9187
@mrv9187 4 жыл бұрын
When you’re watching KZfaq til 4am and this guy starts popping up means it’s time to go to sleep 😴
@Amoll881
@Amoll881 4 жыл бұрын
man that's funny, it's exactly 4 am for me right now ... what are the odds !
@omarlua8831
@omarlua8831 4 жыл бұрын
Coincidence 😂
@louisuchihatm2556
@louisuchihatm2556 3 жыл бұрын
@@omarlua8831 I think not😂
@mecongberlin
@mecongberlin 3 жыл бұрын
Mr W that is soooo funny, was thinking exactly that when your comment came up.
@thothheartmaat2833
@thothheartmaat2833 3 жыл бұрын
Aaaaaand it's tomorrow...
@stephtube4785
@stephtube4785 4 жыл бұрын
You lost me after you made the monkey magnetic
@prakjain
@prakjain 4 жыл бұрын
It was made electric though.
@eirikhgmoekjelsnes9752
@eirikhgmoekjelsnes9752 3 жыл бұрын
@@prakjain well he is lost, so...
@adityasonawane686
@adityasonawane686 3 жыл бұрын
@@eirikhgmoekjelsnes9752 😂😂
@TheLe016
@TheLe016 3 жыл бұрын
That part was covered in Physics I
@D00MSDAYMACHINE
@D00MSDAYMACHINE 3 жыл бұрын
Since when did incompetency become a thing to be bragged about?
@finjay21fj
@finjay21fj 8 ай бұрын
Photons constantly change from particle status to wave and back. When the do they change from tardonic (-c) to tachyonic (c²) due to recompression, so speed of light is illegal in reality, that is, it's an illusion, it's the time the reaction takes that is read as a speed of light, the reaction being that photons switch from wave to particle when they encounter a resistance (reflection) and don't travel as particles, but recur at a resisting, or reflective surface they encounter
@anthonymercuri8885
@anthonymercuri8885 Жыл бұрын
I assumed that "massless stuff goes as fast as it's possible to go, rather than that this particular speed is a property of light" thing when I heard light was massless in high school, without any of that Lorentz stuff.
@mr702s
@mr702s 3 жыл бұрын
I love seeing these older videos after seeing new videos challenging the previous thoughts and theories. So happy they are continuing to dig deeper into the fundamentals of what makes our reality. Continuing to ask how and why and finding better answers.
@ufotv-viral
@ufotv-viral 3 жыл бұрын
👏🏻👽
@garrett7958
@garrett7958 4 жыл бұрын
A lot of mind-blowing revelations from this video, but one that caught me off guard was when he mentions that mass is an impediment to motion. Well yes, obviously it is. But then you think about it even deeper and realize that that's what mass IS, that's what energy IS, is an impediment or slowing down of transferring of information within the fabric of reality, which is spacetime.
@kyrlics6515
@kyrlics6515 4 жыл бұрын
Wouldn't energy and matter be the information itself though? It's just slow moving information, not an impediment to information
@nursesophie5254
@nursesophie5254 4 жыл бұрын
uh
@digitalfootballer9032
@digitalfootballer9032 4 жыл бұрын
So in other words...humans aren't meant to go anywhere...since we have mass. And as we all know, as speeds approach C, mass approaches infinity. Light can go this fast because it has no mass.
@msach4277
@msach4277 4 жыл бұрын
@@digitalfootballer9032 Depends on how you measure and define mass.
@iandalziel7405
@iandalziel7405 4 жыл бұрын
Less is more.
@andrewpickering5180
@andrewpickering5180 2 жыл бұрын
You and others like you nudged me into physics. Thank you
@davidpocock2205
@davidpocock2205 Жыл бұрын
I'm Sooo buzzing you chose this subject, thanks bud. Profound 💯
@johnnyregs2378
@johnnyregs2378 4 жыл бұрын
This dude looks like Peter Dinklage ate a power up super Mario mushroom.
@kakarotlifted7302
@kakarotlifted7302 4 жыл бұрын
LOL
@brianliveshere
@brianliveshere 4 жыл бұрын
HAHAHA!!!
@Baigle1
@Baigle1 4 жыл бұрын
XD
@vfx_jon
@vfx_jon 4 жыл бұрын
amazing
@optimuscprime
@optimuscprime 4 жыл бұрын
I m stiil laughing at the term of "total monkey speed"
@artgaragecustoms
@artgaragecustoms 4 жыл бұрын
He’s like my girlfriend telling me how was her day at work
@Martincohenphoto
@Martincohenphoto 4 жыл бұрын
lol
@splntz
@splntz 4 жыл бұрын
okay i just laughed really hard at that
@alexojideagu
@alexojideagu 4 жыл бұрын
First before I talk to you about Karen in accounts, let me take you back 10 years to when I graduated university. That will relate to her attitude when I ask her to make me coffee. The two timelines converge. Also before I get to my graduation, I have to include my relationship with my mother. And also that I saw a cute cat on the way home.
@siypic
@siypic 4 жыл бұрын
@Russ Gallagher did you get the" your'e not listening to me" senario?
@alexojideagu
@alexojideagu 4 жыл бұрын
LOL RUSS I feel you
@moodiblues2
@moodiblues2 Жыл бұрын
I’ve been listening for about a decade to your videos. I have a good lay understanding of physics. I’m glad you don’t dumb down your videos, though I understand about 1/3 of what is presented. May 1/4 of this one😎
@ThisOldTechGuy
@ThisOldTechGuy 2 жыл бұрын
This is the best modern series! Accessible, often hilarious, built for the "modern crowd" and most importantly accurate hard science. LOVE IT. Ok a question. In its pre Big Bang state, could C have been infinite? I have read and seen that during the inflationary period that spacetime grew at a rate faster than C, and as you have said here and in other videos that spacetime does not care about C. Is there a way to test this? Could we create localized variable spacetime densities? This question might tie into a video about "warp drive" speculation based on Alcubierre's work? Thanks again! You rock!
@loturzelrestaurant
@loturzelrestaurant 2 жыл бұрын
MANY MORE Science KZfaqr? Professor Dave, Sci Man Dan, Joe Scott, Sci Show, Seeker; theres so many more to check out. Waiting for you.
@Cheesg
@Cheesg Жыл бұрын
It is possible to check the speed of light!!! You need to put two split electrons within distance of 299,792,458 meters away from each other. They change straight away if you change one. You change one at the very same time you switch laser on and check on the other side where other electon is placed what is the time from electron change to receiving laser light. So deam simple. Sorry my english is crap, can i get nobel prize now?
@AvB.83
@AvB.83 5 жыл бұрын
"Assume that the universe makes sense" Well, that is a pretty bold assumption... :D
@trollin456
@trollin456 5 жыл бұрын
Were all sub atomic particles, doing our part without knowing to keep a greater "whole" going with a sense of individuality. Time cannot truly play a part in anything considering it is a common denominator created by man. I love how we revert back to old people who are dead and use old shit math to attempt to make sense of anything we experience. There is no universe and this isn't real. You will "die" its a perceivable common denominator and a system created. Solipsism is real. Your are the center of life. Look around and see that you truly can do anything. All you have to do is make a move and break free from the system you've been forced to believe in and stay original.
@JaxMerrick
@JaxMerrick 5 жыл бұрын
I believe Neil DeGrasse Tyson is fond of the quote: "The universe is under no obligation to make sense."
@robertconstable920
@robertconstable920 4 жыл бұрын
@@trollin456 I looked around and saw a wall. I made a move, ouch! that hurt. The system forced me to believe I'm still locked in. I can't get through that damn wall.
@dinhnguyen2110
@dinhnguyen2110 4 жыл бұрын
@@JaxMerrick I think the concept that the universe is somehow coherent doesn't mean it has to make sense to each of us personally.
@davidgrout1056
@davidgrout1056 5 жыл бұрын
I'd like see to see a formula explaining Matt's posture, eyebrows, biceps, haircut and wardrobe.
@nickames3808
@nickames3808 5 жыл бұрын
Like it! LOL!! NOW...put some Grout in it!!!
@humandroid53
@humandroid53 4 жыл бұрын
Phew, the really hard questions!
@BuckRogers2000
@BuckRogers2000 Жыл бұрын
Thanks for explaining causality and speed of light relationship!!!
@charlespackwood
@charlespackwood Жыл бұрын
It's like the variable x. We use it so no one knows what the answer is. In fact, we are no longer sure what the question was. Arriving at a place where everyone is assured of my massive intellect, though no one has any assurance of why.
@salvadorhpo2030
@salvadorhpo2030 5 жыл бұрын
I spent all 12 minutes reading the comments section and laughing. Never mind what he said in the video.
@johnweerasinghe4139
@johnweerasinghe4139 4 жыл бұрын
Me too...hahahahaha
@Cherokee93
@Cherokee93 4 жыл бұрын
That's what I'm doing right now
@peterduffield221
@peterduffield221 4 жыл бұрын
Ha Ha and me to
@nimaamini8060
@nimaamini8060 4 жыл бұрын
player2030 same😂
@brianliveshere
@brianliveshere 4 жыл бұрын
Me too!!!
@fahds2583
@fahds2583 3 жыл бұрын
my brain bends space time in a way that this topic went right over my head
@SaadAhmed3000
@SaadAhmed3000 Жыл бұрын
The absolute best explanation for the speed of light and WHY it exists. Thank you!
@mausm7534
@mausm7534 2 жыл бұрын
Matt: So who's right, me or the pony? Me: I don't know, it's all so complicated!
@SashKaLakers
@SashKaLakers 8 жыл бұрын
Kinda difficult to pick it up watching once, but still interesting. Got the main point, I suppose. Will rewatch it.
@Daniel-dc5mr
@Daniel-dc5mr 8 жыл бұрын
Hows progress
@teaandcoffeeM
@teaandcoffeeM 8 жыл бұрын
This video is a huge jump for people not accustomed to the math he is talking about. Mathematics is a series of stepping stones after all, can't jump multiple steps at a time. There's really no way around it other than study up and maybe one day this video will be crystal clear.
@valeriobertoncello1809
@valeriobertoncello1809 8 жыл бұрын
Simply think that WE are the weirdos, travelling at speed different from the default speed of the universe, only because we are always slowed down by the Higgs field. Pure matter in the form of energy doesn't move at those shameful speeds ! 😂
@Daniel-dc5mr
@Daniel-dc5mr 7 жыл бұрын
***** Not at all
@ripsumrall8018
@ripsumrall8018 7 жыл бұрын
But I'm left with thinking the pony gets it.
@iamkocka6457
@iamkocka6457 4 жыл бұрын
"There is a link of the derivation via the spacetime interval in the description." Oh, good. I was just worried about that.
@rkarnes6304
@rkarnes6304 6 ай бұрын
How about a discussion of this: I’ve heard that quantum physicists, neurologists, and spiritualists each have models of the universe that invalidate the other two. Yet, isolated, each seems to work well in their own realm and for their own purposes. What is the nature of the universe that unifies these three models - for such a three-way conflict seems to imply that they are each missing a proper scope within which to observe, and unify, all three from a single perspective - a transformation of the questions each asks of the other two, into a scope that implies Mu? (Or Nu?) “I’m not sure how it is pronounced”.
@GimmieTheGaff
@GimmieTheGaff 4 жыл бұрын
I now understand why it’s easier to believe in the supernatural.
@davebrandon6450
@davebrandon6450 3 жыл бұрын
well said
@TheGeenat
@TheGeenat 3 жыл бұрын
Or why it more believable
@harryhoudini714
@harryhoudini714 3 жыл бұрын
dont worry, this is not that far off!
@adityakumar2803
@adityakumar2803 3 жыл бұрын
That's why I don't believe in supernatural 😂😂. Because I don't like easier tasks
@hypersonic279
@hypersonic279 3 жыл бұрын
Person: Why does all this happen? Other person: cuz god said so. Person: ok. 🌝
@VicDemise
@VicDemise 7 жыл бұрын
Usually I'm good at this stuff, but frankly, I need this dumbed-down a little.
@mortenjacobsen5673
@mortenjacobsen5673 6 жыл бұрын
in short they where all gettign their numbers wrong due to different hypotheses based on current numbers and assumptions . having observed light at a cetain speed does mean its the only speed, and then they base all their calculation on this constant that might be a fluctuating pulse . Imagine if the speed of light was 10 times faster at the start of the univers , that will make the universe 10 time younger than previous thought.
@lindabailey6093
@lindabailey6093 2 жыл бұрын
This is dillan steele . First off when light is traveling past an observer it's not seen "it's in a reality of its own" untill it gets obsorb ,then we see light,because during obsorbtion it slows down. When looking at light straight on you can see it because it is being obsorb throw the direct impact of it hiting the surface of the eye . Thank J.D.S.
@intractablemaskvpmGy
@intractablemaskvpmGy 8 ай бұрын
I spent 15 years working around radiation. I had to remember that photons have no mass which is hard to get one's head around. I'd like to know more about this as electromagnetic radiation definitely interacts with matter like it should/would have mass such as knocking an atom's electrons out of orbit or the more violent pair production at higher energies. It may be helpful to consider photon particles as little massless bundles of energy instead of matter which would indeed have mass. But, energy has mass due to the theory of relativity... Confused
@Ballacha
@Ballacha 6 жыл бұрын
fun fact: time slows down when an object approaches the speed of light. time stops when you are at the speed of light (although no particle with actual mass can reach it). that means even though from our perspective it takes sunlight 8min to reach earth, to the individual photons themselves, no matter how far they are, they are always annihilated the very moment they are created because there's literally *no time* for them to exist. trippy shit eh?
@nickpatella1525
@nickpatella1525 6 жыл бұрын
so from their reference frame, nothing exists :O
@Ballacha
@Ballacha 6 жыл бұрын
Nick Patella if you define "exist" as the time in between creation and annihilation, then no, they don't exist at all from their own perspective. from our perspective (or the perspective of any 3-dimensional being) however, they exist. both conclusions are valid. and this fact also accidentally fits photons' behaviour described by quantum mechanics - they can simultaneously be in two completely opposite/mutually exclusive states.
@nicolascortesa.9171
@nicolascortesa.9171 6 жыл бұрын
Terry Foldy Holes "objects with mass", it doesn't aply to photons and other massless particles.
@Ballacha
@Ballacha 6 жыл бұрын
Nicolás Cortés A. what doesn't apply?
@KainyStyle
@KainyStyle 6 жыл бұрын
Yeah, that was my understanding of the speed of light, you add velocities but they only work up to a point because as you reach the speed of light, the time-space transforms and therefore in relation to the target where the light shines the speed doesn't change, but I kind of like his no velocity theory too, never hear of it, but it does make sense​ to me. What do you think?
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