Another Physics Misconception

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11 жыл бұрын

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Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute!
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Thanks to Nima Doroud for contributions and to Perimeter Institute for support.
www.perimeterinstitute.ca Created by Henry Reich

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@Fif0l 7 жыл бұрын

Physics misconception: did you know the equation you learned in school is only accurate for stuff you'll deal with outside of hadron collider?

@JohnNeves 7 жыл бұрын

This is the best comment I have seen today.

@theunknownblock5942 7 жыл бұрын

what the heck am I gonna do outside of a hadron collider!?!?

@Fif0l 7 жыл бұрын

***** Whoa, calm down. My comment was supposed to be a joking summary of the video. Besides, can you say "backwater cave" about a place with hadron colliders?

@YTEdy 7 жыл бұрын

Or flip a burger.

@junebugsolaris 7 жыл бұрын

#firstworldproblems

@bogdan1207 9 жыл бұрын

that's not a misconception, it's just a classical approximation.

@hayttman 7 жыл бұрын

bogdan1207 but when you are unaware that its an approximation it's a misconception

@pibroch 6 жыл бұрын

Momentum is NOT mass times velocity so it IS a misconception. Saying the momentum of light is mass times velocity is not a classical approximation!

@Ekvitarius 5 жыл бұрын

Same as Newton’s law of gravitation, a misconception because people don’t know it’s an approximation.

@accountii6382 5 жыл бұрын

bogdan1207 No it’s definitely not

@blauwbeer556 3 жыл бұрын

@@hayttman fair enough

@Mica_T 8 жыл бұрын

Some day this will be in my physics test, and I will probably get it wrong because I followed the supposedly correct equation...

@dullminecraft 8 жыл бұрын

+INDIGO BLUEoO probably not, he'll give you a bonus point then

@Mica_T 8 жыл бұрын

Anthony Kovari Lol. it will be PERFECT xD

@epicmeeltime 8 жыл бұрын

+INDIGO BLUEoO No, the root part of the equation only matters when dealing with speeds approaching the speed of light. Think about it like this, two cars are coming at each other at a constant rate of 50km/h. What happens? They hit each other with a net force of 100km/h relative to someone outside. So now, what happens when two cars are coming at each other, one is traveling at 50km/h and the other is traveling at the speed of light. Is the resulting net force relative to someone outside going to be the speed of light + 50km/h? No of course not, general relativity tells us we can't do that. So our original premise that the two cars will hit each other at 100km/h relatively, is wrong. They hit each other at a marginally smaller number (it really only changes by some decimals). The only time it will have real effect is when you're dealing with speeds approaching the speed of light.

@Mica_T 8 жыл бұрын

Kkfm Harry And you look like me :D

@ohnoitsjasmin 8 жыл бұрын

+INDIGO BLUEoO No.... it won't. Because you aren't going to be dealing with things moving near the speed of light.

@Ropsuguy 7 жыл бұрын

I'm surprised that you didn't talk about in either episode about how we are taught only 3 forms of matter. Although understandable because most people learn that when they grow up.

@MultiPoiu 7 жыл бұрын

plasma is a bit contreversial

@Ropsuguy 7 жыл бұрын

sam loi that has nothing to do with my comment.

@theunknownblock5942 7 жыл бұрын

+sam loi there's still colloids, bose-einstein condensates....

@The51awesome 7 жыл бұрын

GangpanSpock my teacher told us we learn about those because they are the main states of matter, there's other but can't beat them

@TheGuywithnolife 7 жыл бұрын

GangpanSpock but plasma is just mixture of gaseous positive ions and electrons though, we learnt that in Chem

@MatesakCZ 11 жыл бұрын

I feel so damn smart everytime he talks about something I already know.

@backyard282 6 жыл бұрын

mv is what people originally defined momentum. People knew what's mass, what's velocity, and then they simply created momentum by multiplying them in order to obtain linear proportionality. Similarly, I can multiply mass and time and call it apple and give it variable y. It's just that that quantity isn't of some especially particularly big use and significance.

@fairylightsarepretty6391 6 жыл бұрын

minutephysics i will forever support you. none of us will probably need it yet but is nice to know how it actually works. thank you for giving us this knowledge

@EverythinginmyNDS 10 жыл бұрын

I love these. Please if you can do more, I'd be glad.

@slaptaszaidimas1444 8 жыл бұрын

if i use this formule to exams to they cound this ?

@EtihwMaleGGT 7 жыл бұрын

"The equation they taught you in school isn't true" It's okay, I never learned shit in school to begin with

@riuphane 11 жыл бұрын

Thank you Henry for continuing to re-educate us against what we were taught in school.

@McTheWarhammer 11 жыл бұрын

Almost to 1,000,000. Good job Henry.

@firecatflameking 10 жыл бұрын

I am 14 and i just LOVE this kind of stuff! I have watched nearly all your videos :) Thanks so much!

@hristaki99 10 жыл бұрын

80% of his subscribers are like you, including me.

@firecatflameking 10 жыл бұрын

I just love how the internet can bring together people like us!

@coolsvilleowner 10 жыл бұрын

***** Im 19. Got a physics exam in a few days lol! As you can see, at the moment I am procrastinating (which is bad)...

@user-74652 10 жыл бұрын

coolsvilleowner Better to procrastinate with this than with Memebase, for example. Since the comment timestamp claims to be a week old, I'll assume that those few days have already passed and you have already had your exam. How did you do?

@firecatflameking 9 жыл бұрын

***** :)

@534General 9 жыл бұрын

*What is the large hadron collider? And has it destroyed the world yet?*

@pibroch 9 жыл бұрын

It has destroyed the world in a parrrallel universe. We're all dead over there.

@534General 9 жыл бұрын

But somehow you have miraculously survived?

@pibroch 9 жыл бұрын

Mᴀsᴋᴡᴏʀᴛʜ I've survived in this universe, not in the countless other universes where everything was exactly the same as this one up until the point where they were destroyed by the LHC. Your body is rotting in that universe too - the condition of your once lovely fur is unknown.

@534General 9 жыл бұрын

o.O

@hansvertriest9586 9 жыл бұрын

Mᴀsᴋᴡᴏʀᴛʜ He's talking about a theory that says that there are countless universes, every single one just slightly different than the others. So say you made a decision this morning to make eggs instead of pancakes, there will be a universe completely the same as this one, but instead of eggs you've made pancakes.

@Supermofo338 11 жыл бұрын

Love these videos

@alaaali7534 7 жыл бұрын

man.. i loooooooooove this .

@cloroxbleach1200 8 жыл бұрын

Oh shit I love memorizing physics formulae

@kcwidman 7 жыл бұрын

if you plug in that for light, you get mv/sq. root 0 or mv/0 or undefined. How does light have momentum if this is the correct equation?

@alexanderchippel 7 жыл бұрын

Reality is subjective.

@mooncowtube 7 жыл бұрын

Light has no mass, so mv/0 is 0/0 and this formula simply doesn't help us find its momentum. If you substitute m=0 into the first equation, or v=c into the second, you will obtain p=E/c. The momentum of a photon is based entirely on its energy, ie the frequency of the light. See also hyperphysics.phy-astr.gsu.edu/hbase/relativ/relmom.html#c2.

@Veexliat 7 жыл бұрын

Was wondering the same thing a while back, here you go /watch?v=M-VZdJu0bLU

@pascalos99 7 жыл бұрын

Thx for pointing this out! :) , so only if the velocity isn't c you can use this, or because objects with mass can't have a velocity of c; if an object has mass.

@pascalos99 7 жыл бұрын

+Dave Clark

@ThatGuyMason 11 жыл бұрын

I love the awkward bass line on all of these so much, you have no idea

@blaze9525 11 жыл бұрын

Yeah, I am actually a bit impressed myself at how well this channel gets complex ideas relatively thoroughly explained in such a short amount of time.

@0s0sXD 8 жыл бұрын

this video makes me SO FUCKING ANGRY AND I HAVE NO IDEA WHY😬 DID LIKE

@Cjaypanda111 8 жыл бұрын

+Mohamed Osama too much math

@0s0sXD 8 жыл бұрын

+Cj it makes me feel like everything i learned before is wrong by 0.00000000000001 -_-

@SciShorts 8 жыл бұрын

+Mohamed Osama LOL hahahahah. Our knowledge is not perfect, we still have a lot to learn and we don't exactly know if it's perfectly correct, that's why everything is still a theory, because we might not know.

@crimsonfoxonusae4472 8 жыл бұрын

so i passed an exam with a false formula......

@anotherKyle 8 жыл бұрын

+The_cute _Wolfie it is not false it is simplified because the added part only effects the outcome in specific situations.

@andrewrobertson1473 8 жыл бұрын

+anotherKyle Not true. The relativistic form of momentum applies at low speeds as well, but the difference between the classical and relativistic forms is so minute at low speeds that within the margin of error of our measurements it means nothing.

@GottaRantSomewhere 11 жыл бұрын

you sir bring out the child of me not the bad side, i mean the "i wanna learn MOAR" side. i seriously crave for physics videos of you and 1veritasium since i started watching...

@Linkario86 3 жыл бұрын

I think I understood like... A bit less than half of it, but given it's so short I still learned more than in a lesson at school back in the days

@themagicbush1208 8 жыл бұрын

Take that schooling system!!

@AhnafAbdullah 9 жыл бұрын

Why is Momentum p? I know why light is c, but p doesn't make sense to me. Yet

@MissAbbyH 9 жыл бұрын

***** Thank you for that, Dylan :) So thoughtfully enlightening.

@AhnafAbdullah 9 жыл бұрын

***** Yup, sorry I didn't see you there, Thanks a lot. I didn't find a good reason even after searching it on Google. :)

@obhutara 8 жыл бұрын

Ahnaf Abdullah there werent any letters left.

@buckyball2003 5 жыл бұрын

‘m’ is mass so they had to pick a different letter for momentum

@cleanunderyournails 11 жыл бұрын

That's basically what I was trying to say just way less advanced. Thanks for the more in depth description.

@adrian9545S 11 жыл бұрын

Thanks for that. now it makes sense why P = mv in textbooks, I had read about special relativity and the concept that states mass as non-constant, but didn't really get why the equations still represented it as constant

@sirawesomehat8814 9 жыл бұрын

Whats the momentum of light? please answer!

@youtubeepicuser4209 9 жыл бұрын

a billionth of a pound of pressure is exerted per photon.

@DarkSt3ve 9 жыл бұрын

sirawesome hat p = E/c

@sirawesomehat8814 9 жыл бұрын

DarkSt3ve This is an old comment, I now know that. Thanks for replying and not calling me a dumb fuck or something like that.

@kanavkohli794 9 жыл бұрын

sirawesome hat Dumb Ducking Fuck

@sirawesomehat8814 9 жыл бұрын

Kanav Kohli :)

@bobbo8131 10 жыл бұрын

i dont understand what your saying but i nod because it makes me feel smart!

@Tangylives 11 жыл бұрын

That took my first year lecturer at Warwick an entire semester to go over when you covered it in 50 secs.

@Adrastos42 11 жыл бұрын

Well, you can actually just pick when it's close enough to zero. If you use p=mv, you're accepting that you're making an approximation and that the result will be not exactly right (though very close to it for everyday speeds). In many cases, this is perfectly fine, for example if the difference between p=mv and the full equation is less than your experimental error, or for anytime you're dealing with speeds where you know the difference will be fairly small and just want a ballpark figure.

@WhopperBu 10 жыл бұрын

lol i am a mechanical engineer so dont give a shit.

@hristaki99 10 жыл бұрын

Then don't watch science videos. It's that simple.

@KartikayKaul 9 жыл бұрын

Uhm... Engineers are able to solve problems just because physicists make formulaes.

@mechwarreir2 9 жыл бұрын

hristaki99 Yo its a joke referring to how mechanical engineers don't use special relativity equations. We use equations for materials, fourier transforms, lagrangians, but no modern physics needed to build a car xD.

@jeremysmith6828 9 жыл бұрын

Hey, here's hoping that someday in the distant future, mechanical engineers WILL need it - that would be a pretty amazing world to live in!

@mechwarreir2 9 жыл бұрын

Material engineers branch from mechanical and they do use this.... but on a nanoscopic scale.

@IamGrimalkin 10 жыл бұрын

I wouldn't call his a "misconception". It's an approximation.

@martijnvanweele6204 10 жыл бұрын

I think the misconception is that we forget that it is an approximation.

@AdevbRS 10 жыл бұрын

this is why i love physics so much

@ThisNameIsBanned 10 жыл бұрын

Why ? because they are mostly incomplete ? Any math rule we have is probably incomplete, but it does work good enough for our problems.

@Exevium 10 жыл бұрын

But that is what makes Math so beautiful. By the time you've learned "everything", everything has become something.

@GratedArseCheeks 11 жыл бұрын

I think it depends on the reference frame:) in your car you will see your headlights working as usual (Although you wont actually be able to see at all because of how light waves will never be able to catch you and everything will be shifted so far into the gamma ray spectrum/radio spectrum) But to an outsider there will be a buildup of photons in the headlights, kinda like a sonic boom, which would consist of an infinite frequency wave of light.

@TheEgg185 8 жыл бұрын

lol. wut?

@PinkCammy 10 жыл бұрын

Would be nicer if you said "Common Physics Approximations" ... We HAVE to teach them the basic/ Newtonian approximation when they are young, just for them to understand initially (Like when they are 13 years old and can't do maths all that well to treat square roots properly) ... So It would just be nicer if you didn't make it out to be that the educators are ignorantly teaching p=mv even though we know that it's just an approximation. Please? and Thanks :)

@totallyUnimodular 11 жыл бұрын

Henry, You should make a sequel of this video on momentum of massless particles and the momentum equation you mentioned here.

@SerAnthos 11 жыл бұрын

p=(mv) / sqrt(1-(v²/c²)) is used for particle of mass moving near the speed of light. For massless particles such as light, p= hf/c is used instead.

@ashtingillurd4751 10 жыл бұрын

The God and Rock Paradox: If a god is considered to be able to do anything, then he could create a rock that he couldn't pick up, right? Well since made it so he could not pick it up, then he couldn't do it, even though he SHOULD be able to do anything.

@TheSteamGamer99 9 жыл бұрын

Solution: God dosen't exist.

@deepstudios3832 6 жыл бұрын

Solution.. why the hell wud he need to create a rock other than throwing it at a dumbasss like you

@thecaptain0003 7 жыл бұрын

3,640,555 people subscribed even though they don't understand a thing your saying XD

@jackdaniels4975 7 жыл бұрын

I mean I understood pretty well what he said.

@ravinduwijayarathna6238 5 жыл бұрын

me too lol

@ayushgupta3234 5 жыл бұрын

they understood pretty much

@lolageez1 11 жыл бұрын

Managed to convince my physics teacher to show some of your videos in our lesson today :D

@youtubepeace 11 жыл бұрын

Please make another video discussing more about "Shrodinger's Cat", the last one was really interesting.

@ChappyBT 11 жыл бұрын

Very good explanation of the problem. And the reason that particles in the LHC can't attain light speed, I've tried explaining that to people before but didn't have as good an analogy as you just used here..I may have to "borrow" it (:

@kingkonggrunt 11 жыл бұрын

Hey Henry, If I was to calculate the momentum of an object traveling at velocities near the speed of light, would I use its relativistic mass or its rest mass for 'm'?

@Cyborg2587410 11 жыл бұрын

@minutephysics I tried to look it up but i dont get it so im coming to you for help, about quantum mechanics and . How do we know if a particle is in a superposition or has been in one, if every time we observe it, it has collapsed to one position or the other(whatever the position maybe).

@TomcAt1901 11 жыл бұрын

Watching one video of this channel made me to watch all the videos..:)

@shpilzak 10 жыл бұрын

That means to get momentum as function of other variables. In this case, square 2nd equation, put expression for E^2 into it and find what p equals to.

@GUSRULZ445 11 жыл бұрын

Well that all went right over my head.

@seancohan5219 11 жыл бұрын

Even if it takes a couple repeated views, I love being able to understand this concept.

@youknowwhenitsreal7 11 жыл бұрын

You have a point, and the formula given in the video only works if m doesn't equal 0. There is another equation for the momentum of massless particles: p=E/c where p is momentum, E is energy and c is the speed of light.

@pureevilskaters 11 жыл бұрын

I don't understand anything they talk about in these video, yet i keep watching them

@alexalbert9818 11 жыл бұрын

Please make another video. I am craving for more physics. My brain is hungry for knowledge. HULK NEED PHYSICS!

@katiacor 11 жыл бұрын

Thank you for the subtitles :)

@9SMTM6 11 жыл бұрын

I'd love to see an Video about quantum dots from you... as it is an actual Topic (on the CES SONY has shown a TV which uses quantum dots) and you're the best in Explaining things :-)

@a.j.coldwell6909 11 жыл бұрын

Hey Henry I have seen a lot of your videos and now have two questions, #1 What would it take for us to reach the speed of light or something near it to travel to out of this solar system, #2 Would we be able to use some sort of cryogenics or something like that to freeze or sustain ourselves for extended space flight if we were able to reach light speed or a speed near it?

@daedra40 10 жыл бұрын

A tear to my eye :')

@dhvsheabdh 11 жыл бұрын

You end up with a lorentz factor (which is what you times mv by to get momentum) of infinity. Hence, you have 0*infinity, which is indefined, yet has a value.

@BlueCosmology 11 жыл бұрын

No one at CERN thought so either, there was a paper released once by people running an experiment in conjunction with CERN that was released as they needed help figuring out what they had done wrong with their experiment as it was indicating faster than light particles. Then after I think it was less than a week the experiment was fixed.

@mimjack 11 жыл бұрын

can anyone plz tell me what this format of video is called? and how to look for tutorials? I don't mean the subject matter (physics) just the style (writing, drawing, doodling)

@TsiSiFa 11 жыл бұрын

Hm. That's very interesting, and I'll have to read more into it. Thank you for widening my horizons!

@scientific97 11 жыл бұрын

I really like this channel`s video. By the way, I`m wondering why is there no more uploads...

@falconlara 11 жыл бұрын

Brilliant!

@JGBFatJesus 11 жыл бұрын

why did i find that footlocker commercial so awesome?

@SmFZaman 11 жыл бұрын

Still need to visit the Perimeter Institute... it's really close to U Waterloo...

@localnebula 11 жыл бұрын

Simple way to derive the p=h/λ. With no rest mass, the relevant equation, E²=(mc²)²+(pc)², reduces to E=pc or p=E/c. For a photon, E=hν=hc/λ, so p=E/c=h/λ.

@123eldest 11 жыл бұрын

The energy for a photon is E = hbar*w , where hbar = (planck's constant)/ 2*pi and w = 2*pi*f where f is the frequency of the photon f = c/wavelength. E = hw = pc (m = 0) so p = hw/c = hf/c

@pibroch 11 жыл бұрын

You're right. And Iif you replay the video you will hear him say that the formula applies to "objects with mass". (The energy-momentum-mass relation appears briefly: E^2 = m^2c^4 + p^2c^2. (p is momentum, m is mass) For light m=0 so this equation reduces to E=pc so p=E/c. In other words the momentum of a photon of light is its total energy (divided by the constant c).

@jjjuanig Жыл бұрын

Physics misconception: There are less actual 1-minute physics videos in the channel than the total videos

@abysspanda 11 жыл бұрын

Cont. Since the water is changing direction so many times, this is also the cause for things like diffraction, or the bending of light. Now, when referring to how light has energy, well light in itself is energy. As for momentum, refer to E=mc^2 or the relation of mass to energy, basically you can quantify a light particle's momentum by creating a surrogate term for mass and replacing it using the mass energy equivalence. Well, at least in simple terms, the real quantification require calculus.

@ChrisDrenthe 11 жыл бұрын

Could you do a video on the International Linear Collider? Please explain what the difference are compared to the LHC.

@Pursuit99 11 жыл бұрын

Defined by that that momentum equation, an object with mass can never reach the speed of light. If you were driving at .99c, everything will be blueshifted past the visible frequencies and you won't see anything. If you could travel at c, you would essentially push a cloud of photons that you would never see because it wouldn't be a wave in your frame of reference. There's more going on, such as aberration and time dilation but try reading up on the sound barrier to understand what would happen.

@SCarboni 11 жыл бұрын

Just because its close to 1, doesn't mean it is one. He said if v< c ie. v = 2 c = 5 V^2/C^2 = 4/25 = .84 square root of 1-.84 = .4 That's not at all close to 0

@MoreKevinLiang 11 жыл бұрын

also E = mc^2 is actually: E = (mc^2) / the same square root value from the momentum equation the square root value ( 1 / sqr(1 - v^2/c^2)) is, in most textbooks, denoted by the greek lowercase γ (gamma)

@HD-fy2wu 6 жыл бұрын

Expand mv/sqrt(1-(v/c)^2) using Maclaurin series you get mv + mv^3/(2c^2) + (3mv^5)/(8c^4) + (5mv^7)/(16c^6) + ... So it is just an approximation, for values of v where mv^3/(2c^2) is not significant as compared to mv.

@TnTKing327 11 жыл бұрын

Cracked and minutephysics together I think I died and went to heaven

@nordykid 11 жыл бұрын

i have a physics exam coming up could you make a video about fluid and thermodynamics

@moisesbessalle 11 жыл бұрын

as an object with mass approaches the speed of light you will see that the energy you need to do so becomes huge and when you do the limit with v approaching c you get that the amount of energy you need is infinite. or if you don't do the limit you get a division by zero, basically telling you that you can't move an object with mass at the speed of light.

@Tetrahelix 11 жыл бұрын

It can have momentum according to this equation because, for any massless particle, v=c, so the equation becomes p=0/0. Because p=0/0 is just another way of writing p*0=0, which is true for any value of p you select, this is the equations way of telling you that, while the photon may have some momentum, you need to use a different method to find what that momentum is.

@faneb 11 жыл бұрын

Well, actually light has a definite momentum that depends on its wavelength/frequency via p = h/f, where h is Planck's constant and f is frequency. So for light, you can just use that relation to find the momentum. For other particles (as far as I know) there isn't a convenient formula like this.

@groveht17 11 жыл бұрын

I had a doubt to as since no one's ready to answer me, according to DeBroglie's relation between momentum and wavelength, (lambda)=h/mv, now suppose if I take a 1 kg mass, and make it move with a velocity equal to 'h' i.e plank's constant, in magnitude, we still get the wavelength of the mass to be 1 meter, but plank's constant in itself is very small and some object moving with a velocity of magnitude 'h' can be considered almost at rest. Does that mean masses at rest also have wavelength?

@mrwho995 10 жыл бұрын

You are correct in that they can act as both waves and particles, but being a particle doesn't necessarily mean they have to have mass (believe it or not).

@m3nm3nm3n 11 жыл бұрын

Using m = 0 in the energy-momentum relation, you get the momentum for the photon: p = E/c= h/lambda.

@SimpleStory95 11 жыл бұрын

actually, this did make some sense. I already knew of the De broglie wavelength equation, but did not see that with simple algebra, it became momentum. This has really cleared things up. Anything a little more in depth would also help, Thanks

@pibroch 11 жыл бұрын

If you look at the video again, at 0.20 he is referring to "objects with mass" - the equation which follows does not apply to light, which has no mass. Momentum of a photon is Planck's Constant divided by its wavelength - there are no zeros involved.

@BibbusTV 11 жыл бұрын

i take basics physics in junior year of high school and this is very understandable

@dashjack30 11 жыл бұрын

Can you PLEASE do a video about the coriolis (not sure if thats the spelling) effect and why it occurs?

@OdysseyWorks 11 жыл бұрын

Could you make a video of Optics: Principel of least time?

@Tetrahelix 11 жыл бұрын

Obviously, when you use units where c=1, relativistic mass is the same as total energy. However, I have a number of reasons that I prefer to have M in my toolbox.: 1) I was trained with it. 2) Much of my rest mass is the kinetic energy of the gluons in my nucleons. 3) When using non-natural units (c=/=1), having M makes certain metrics more elegant. The distance metric is l^2 = (c^2)*(t^2) - r^2, where l is the same in all frames; similarly, (m*c)^2 = (c^2)*(M^2) - p^2, where m is invariant.

@MrKorrazonCold 11 жыл бұрын

Matter is opposed motion simulating rest and balance now through violent motion. The locational spherical inward absorption and outward emission of electromagnetic waves is forming all forces of nature, antimatter matter annihilation forming + and - electric charge and electromagnetic fields and the forward passage of time. Thus limited range Spherical Inward and outward waves and Doppler causes a redshift. Redshift with distance a consequence of less energy exchange, less EM-wave interactions.

@Koba4329 11 жыл бұрын

k i have a question. if the equation is E2=(mc2)2 + (pc2). that means that objects with momentum have greater energy potential, but in another reference frame that object would be still, so its momentum would be 0. so to two references frames the potential energy for the same object is different... is that just another one of those confusing consequences of relativity? or am i missing something?

@SwissPhil02 11 жыл бұрын

interesting, thanks for your message :)

@irvanka 7 жыл бұрын

singkat padat dan jelas :) appreciate it, thanks

@MalcolmGillis 11 жыл бұрын

My brain locks up and my head smacks the desk during brain reboot every time I watch one of these videos.

@miky721k 11 жыл бұрын

Dear Minute Physics could you please explain Michelson-Morley Experiment? I think that experiment is the pinnacle to modern physics and compliments this video.

@resul4e 11 жыл бұрын

goddammit if only i had seen this video 2 days ago, because I needed this in an exam

@RINKUSINGH-du9to 6 жыл бұрын

How have u find the formula of momentum ??

@DaffyDaffyDaffy33322 11 жыл бұрын

Oh, I didn't see your other comment. It didn't show up in my inbox for some reason. I see your point now. Very interesting.

@Squishina 11 жыл бұрын

p=mv is always true, I'd like to think of m being relativistic mass if the object is travelling, and rest mass if stationary. Doesn't that sound easier?