Very clever to have that pie on hand. Otherwise we would never have grasped this so-called "three-fourths" concept.
@nimim.markomikkila16739 жыл бұрын
James Butler Yes, and it was dark, too. But I got a bit confused, when they said, that it´s actually transparent, because in my eyes it sure still looked brown & delicious:) All the best, Forrest Gump:)
@twistedwell95686 жыл бұрын
LOL
@steppenhenge6 жыл бұрын
5:15
@l_a_h7972 ай бұрын
When it comes to chocolate pie, "The heart has its reasons of which reason knows nothing." 😂
@wintersummers30858 жыл бұрын
Part of that pie represented itself o_O
@JNeverMindMe7 жыл бұрын
Well played, Sir.
@baley77 жыл бұрын
Winter Summers about an atom's worth
@baykkus6 жыл бұрын
It's a recursive pie.
@leonhardeuler98394 жыл бұрын
Right. Every set is a subset of itself.
@agrajyadav29513 жыл бұрын
@@leonhardeuler9839 ye
@xXEliteTNCXx9 жыл бұрын
I want that pie.
@XxxclarityxxX9 жыл бұрын
xXEliteTNCXx i just want a slice q_q
@Jet-Pack9 жыл бұрын
+xXEliteTNCXx The cake is a lie!
@xXEliteTNCXx8 жыл бұрын
Klaus Von Liechtenstein Still waiting for the "Why not both"-Guy
@klausvonliechtenstein99768 жыл бұрын
xXEliteTNCXx ^^ im a compromise guy
@xXEliteTNCXx8 жыл бұрын
Klaus Von Liechtenstein me too actually ^^
@SharpAssKnittingNeedles Жыл бұрын
Wow everyone is so young! Just came across these channels recently, and wish I had found them earlier! Love everything you do!
@welanduzfullo8496Ай бұрын
its like a time machine, bc they all still do interviews now ❤❤❤❤
@PathologicalTrier9 жыл бұрын
Does dark matter have a dark periodic table?
@bacicinvatteneaca7 жыл бұрын
Umang Bhat We'll know only the day we get to understand it. Heck, it might even be not a single thing, but rather several other "realms" as incapable of interacting among them other than through gravity as we are towards them.
@AdityaKumar-ij5ok6 жыл бұрын
Nice concept
@methlokaijuthekaijuexpert5 жыл бұрын
Umang Bhat It could be. Dark Matter is not really the best name since that implies we know it is matter, when in reality we don’t know.
@Mernom3 жыл бұрын
It depends on if it interacts with the strong force. If it doesn't, then the particles can't bind to each other to form more complex structures. But even if it does, it shouldn't influence the properties of the composite particles much, since what decides the properties of the element is the outermost electron layer, which they would not have, since they don't interact with the electromagnetic force and can't have a charge. Actually, if they don't have a charge, does that mean that there would be no factor that prevents from more and more dark matter to clump together? Since there's no positive charge to push protons apart...
@test1969810 жыл бұрын
Never thought a video of dark matter could make me hungry. Seriously the first three minutes i only heard pie, pie and pie.
@Pauly4217 жыл бұрын
Had a smoke before this and all I could think about was the pie
@subscribetopewdiepie41095 жыл бұрын
Paul McDonagh weird flex but ok
@frasercain11 жыл бұрын
Astronomers have thought of that, but even if you add up all black holes, cold gas, brown dwarfs, etc, it just doesn't give you enough mass to account for dark matter.
@Gemparkzz10 жыл бұрын
just eat that pie already
@c_o_n_t_e_n_t34204 жыл бұрын
Id like to see an update of this video where we get to see the ten years of progress from then until now.
@shashanklaur5078 жыл бұрын
That Pie is very distracting.
@evanfarhood86496 жыл бұрын
Makes me...Hungry
@BloodReaper6165 жыл бұрын
even me
@CBBP4711 жыл бұрын
She really does have an impeccable speaking voice. I love listening to her explain things.
@marcopolo300110 жыл бұрын
Where is it? Its dark you can't see it.... lol ...sounds so Monty Python the way he said it XD
@GarioTheRock8 жыл бұрын
My astrophysics professor always said that dark matter: "is a real bitch" lol
@skudzer19855 жыл бұрын
8 years later and I still think about that pie.
@jamesgcrawford8 жыл бұрын
"What would happen if I drove my car into a big clump of dark matter?" This is what makes your videos relatable!
@NuisanceMan8 жыл бұрын
This video made me hungry. I'll tell you what. Since you're not using the dark energy, why don't I...dispose of it for you.
@fergusmgraham10 жыл бұрын
I love all of the Brady channels....absolutely fascinating.
@JackassBauer19 жыл бұрын
Where can I find the recipe for dark matter chocolate pie? Or there is no way of knowing it? :)
@maxmezaa9 жыл бұрын
Dr, Gray is absolutely endearing!
@JanaPersson10 жыл бұрын
If it is gravitationally interacting with itself as well as normal matter, why isn't dark matter "lumpier" than is apparently observed? Normal matter is very lumpy. And as it apparently has mass, and there's about six times more of it than normal matter, why hasn't dark matter formed "dark black holes"? Or has it?
@branhoff10 жыл бұрын
I thought the first slice was a third of the pie, but what do I know?
@megamanmadrid12 жыл бұрын
I'm not an astronomer, astronomy is for me just a hobby, but it makes me think of all these posibilities, and these videos help me understand all sort of things, and the real scientists that do the explainig part, they do it in a way that is easy for everyone to understand it all. So, thank you, Sixty Simbols :)
@TheAgentJesus11 жыл бұрын
I love all of these guys, and they're all incredibly humble and intelligent people, but let's all take a minute to appreciate Brady Haran - not only for making these videos in the first place, but because though he remains behind the camera and out of the spotlight he proves himself to be as smart as any of the rest of them because he fearlessly and consistently asks the right questions. Thank you Brady, and all of the rest of you at Sixty Symbols/Numberphile. Keep up the wonderful work!!
@mrautistic25809 жыл бұрын
I love the quote from time stamp 10:11 to 10:23.
@CollectorsFix10 жыл бұрын
Umm...that piece of dark matter looks delicious...
@jyoules98337 жыл бұрын
Great video! I must admit the moniker "dark" matter made me think of something like soot, but you make it clear that it difficult to detect - "elusive"! "They seek it here, they seek it there..." Pimpernelium?
@venusbrain11 жыл бұрын
In one version Membrane theory, dark matter is just gravity wells from normal matter in a nearby universe. I equate it to having each universe on a sheet of paper and drawing on them with a ball-point pen. The drawing in the paper is matter, and the indentations are the gravity wells. When you lay one "universe" page on top of the other and then draw "matter" onto the top one, you can see the "gravity well" indentation on the bottom page(our own universe). It makes sense to me.
@MrGOTAMA4209 жыл бұрын
i was just talking with a young lady teenager and she asked me what i was watching i showed here the screen grab of dr gray(i think thats her name?) i told her she was a cosmologist ,and she said ohhh she works with makeup.....priceless
@aaron48209 жыл бұрын
.......wow
@MsHoaxx9 жыл бұрын
gotama420 congrats. great education you got there
@MrGOTAMA4209 жыл бұрын
MsHoaxx how do you mean?
@MrGOTAMA4209 жыл бұрын
***** danke schon
@MrGOTAMA4209 жыл бұрын
***** I swear this really happened i almost lost it , the schools are ok here but there are a lot of hill people who are not real big on education. I was lucky both my parents instilled a will to learn on us.
@jesusthroughmary9 жыл бұрын
So, basically, we're still stuck with an aether.
@3elwoo9 жыл бұрын
What makes me not repeating it repeatedly is the guaranty that I will repeat it as a whole!
@avinotion4 жыл бұрын
I liked the unsophisticated thumbnail of the chocolate pie! The simplicity was in such contrast to the matter at hand... (any pun that could be derived from this was not intended).
@EditCrew10 жыл бұрын
Am I the only one who thinks that woman is breath takingly gorgeous?
@mattgilbert73476 жыл бұрын
Nope. Not the only one.
@blindtorturekill6 жыл бұрын
She's super sexy. Love me some science girls.
@RebootEDC6 жыл бұрын
She's clever. She's beautiful. She's perfect.
@jayakrishnan266 жыл бұрын
Nope
@nosuchthing86 жыл бұрын
Andrew Trigueros she's attractive
@benbrown930510 жыл бұрын
Brady or someone from the Sixty Symbols team: I love your videos! I'm a high school science teacher in an American international school in China and you guys do a great job of making things visual and accessible for my students! Some of my students had really good questions about dark matter (very proud of them), and I was stumped! Does dark matter interact with black holes? Black holes collect mass around them because of their tremendously strong gravitational fields, so shouldn't we also see black holes becoming more massive several times faster than we can account for by monitoring their intake of "normal" matter?
@conradgarcia48508 жыл бұрын
I've a few suggestions what dark matter and dark energy are and i bet that people are already thinking about this: 1. broken gravity or free gravitons in spacetime. 2. particles too small to detect 3. psi phenomena emitted by nonliving and living things 4. spirit realm that exists in another dimension (i know people are smirking at this but options are still options)-ghosts sometimes interact with electromagnetism but are mostly not present in our universe.
@quahntasy6 жыл бұрын
8 years later I am still looking at the pie.
@legitbeans90784 ай бұрын
14 years later and i still think about the pie
@mikeFolco8 жыл бұрын
I see the Crips have started to diversify their activities.
@the_original_Bilb_Ono8 жыл бұрын
lol chea its what ya gotta do to put da bread in ya bois hand. - of course im refering to street molecular science. these streets are hard for a young physicist.
@JoeGamer816 жыл бұрын
Bilb Ono My favorite rapper is Young Phyzy. Well either him or Higgz Tha Boson
@sciencemage628310 жыл бұрын
Are your sure the dark matter isn't a combination of quarks that is neutral like 2 strange and 1 charm?
@zulmia11 жыл бұрын
From what I understand, it's because the dark matter doesn't interact with itself or regular matter through electromagnetic forces. If you look at what happens in something like an accretion disk, the matter ends up colliding, which causes it to tend toward the center. With dark matter, it's more of an oscillation. You can see this effect easily if you look at the bullet cluster. The regular matter slows down from EM forces as well as gravity, while the dark matter just slows from gravity.
@mnathan8812 жыл бұрын
I loled so hard when she places the cake on the table after she cut it.
@FcoMp10 жыл бұрын
so dark matter is made of dark chocolate, that explains everything.
@TheVino39 жыл бұрын
The biggest problem I have with the dark matter theory: Why doesn't the dark matter affect planetary systems? If there is dark matter permeating space all throughout a galaxy - enough to pull stars around at high velocities - why is it not affecting planetary orbits *at all*? Why can we completely explain the orbits of the planets with conventional theories? We only needed this idea of dark matter after observing the orbital motion of stars. Well after we had explained the orbits of the planets quite accurately. Why does dark matter seemingly only affect the orbits of stars? Perhaps this is explained within the theory, but I've never heard this question even asked.
@Vinthis19 жыл бұрын
It does. Like people are gravitationally attracted to ants. It is bending the light of distant galaxy's. It is operating on a different scale.
@TheVino39 жыл бұрын
Vinthis1 Yes, I am aware that its most visible on large scales. What I mean is, can we see its influence on planets at all? What do the equations say the influence on planetary orbits should be, and could we measure that? The effect, if dark matter is fundamentally affecting galaxy structure, is surely not going to be immeasurably small. It might not be overwhelming but we should surely still be able to see it. Personally, it feels more like we need to work on our theory of gravity. Obviously work on both theories is required, but I have a hunch that it is gravity behaving differently rather than dark matter.
@Drainojunkie9 жыл бұрын
***** This was actually proposed in the late eighties by A scientist named Milgrom. He proposed what he called Modified Newtonian Dynamics, which suggested that at low accelerations the force of gravitation begins go by 1/distance rather than 1/(distance)^2. This would work to explain the motions of stars in galaxies without the need for dark matter halos, but doesn't explain the heavy gravitational lensing of the galaxy clusters seen in the video (among other things). Dark matter is a much more complete theory which is why it's preferred.
@TheVino39 жыл бұрын
Drainojunkie Yes, I am aware that Dark matter is a fuller theory, but my question is, can we see its effects on planetary orbits? If it is permeating all of space and dragging stars into large orbits, shouldn't we be able to measure its influence on planets as well? I am not saying that I think this ruins the theory, I am just wondering if and how the theory deals with this, as I have never heard anyone mention it.
@Drainojunkie9 жыл бұрын
From what I understand, as far as we are from the galactic edge, we wouldn't see any effects on the orbit of planets because we are far enough from the halo that the gravitation would likely be affecting the orbitals too uniformly to measure. However, I second your question. I would think that very close to the halo we should see that orbits elongate towards the edge of the galaxy as they rotate. I'm just not sure that we can measure that, or if the effects on out own solar system would be large enough to measure. Essentially, I just spent all that time to say "good point, I don't know".
@jonorion509510 жыл бұрын
That computing farm was neat. It's crazy to think that in a decade or two, all of that computing power will probably fit inside your phone in your pocket.
@KrisBendix11 жыл бұрын
The energy potential of that pie is so large, that I can smell the chocolate even trough my screen!
@DeusExHomeboy10 жыл бұрын
the Kripps have a computing centre to simulate full universes of dark matter? wat..
@morrumband10 жыл бұрын
That pie.
@SharpAssKnittingNeedles Жыл бұрын
"... a vision of the universe that tells us, undeniably, how tiny and insignificant and how rare and beautiful we all are..."
@yecto13322 жыл бұрын
Holding that pie near to ur mouth and not tempting to eat needs dedication from some other dimensions
@gorebello9 жыл бұрын
I NEED THAT PIE! It looks.... NECESSARY!
@zapfanzapfan6 жыл бұрын
Mmmmm... dark choc.. ehum.. matter :-)
@kayvee25611 жыл бұрын
I am not a physicist. When a gas cloud collapses, the atoms are spaced far enough apart to experience almost no friction. As they are drawn in to a common central area they are moved close enough to increase the probability of collision. These collisions transfer the kinetic energy from external (velocity) to internal (heat). If that didn't happen, then the particles would just rubber band backwards and forward. No collisions = no energy loss due to heat. 1/2
@theuberband11 жыл бұрын
My guess is it probably does, but it has to interact with something we can detect in order for us to detect it. Think about 2 invisible people. If they silently shakes hands, we wouldn't be able to tell if they are in the room or not. But if one of them picks up an object (interacts with something that we can see/detect) we will know that the invisible person is there. Hope that's helpful/the kind of answer you were looking for.
@johnkerley41529 жыл бұрын
What was the rest of the pie?
@tittletotute64449 жыл бұрын
John Kerley Dark energy.
@joshualemire70699 жыл бұрын
John Kerley Deez Nuts
@umcarainteressante9 жыл бұрын
Joshua Lemire hahahthat's funny xddd
@numbers9to09 жыл бұрын
Physicists: The is no aether! Years later... Um, there is dark matter and dark energy, and...
@eIucidate9 жыл бұрын
I could listen to Dr Gray all day.
@mynameismatt201011 жыл бұрын
As far your question of how i would explain how a galaxy separated from the dark matter, my best guess would be that a majority of the matter in the galaxy had already been absorbed into a central black hole and that black hole didn't have a large enough sphere of gravity to maintain a hold on the dark matter around it. Some of the dark matter stuck with it as it gained velocity during a stellar collision, but a majority did not. That's just a guess, but it's better than your guess.
@Derederi9 жыл бұрын
Sixty Symbols What if dark matter is a particle with absolute zero temperature? It does not react with other particles nor emit light because it cannot, but it still has gravity. You should measure dark matter at your laser cooler experiment. ^(Do I get a Nobels prize for this idea)
@bestnocture8 жыл бұрын
You might if someone does the experiment and mentions your idea,else no
@Ni9995 жыл бұрын
Nothing can be at absolute zero. If we had the exact opposite of a Nobel Prize, you might have earned it. Also, instead of getting a million dollars with the prize, you'd be fined a million dollars as a penalty for believing that you can pull ideas out of your rear end and win cash and valuable prizes.
@CanadianBoardCrew7 жыл бұрын
Blood's better step it up. The Crips already got super computers.
@jsmit90636 жыл бұрын
CanadianBoardCrew came to the comments immediately to see if someone else got that, lol well played
@fargotech98184 жыл бұрын
Jocelyn Robyn no one here about that life
@StopFear5 жыл бұрын
Dark matter is the darkness shield, like a curtain, the mechanical elves use to conceal themselves as they constantly work with their little space hammers to fine tune the universe and to tug on the strings connected to all the cosmic bodies.
@SANCTIONTRAP11 жыл бұрын
The possibilities are endless. And its irony that prevails in these kind of cases. Everybody is looking up while they might be next to us..lol.
@ajuk19 жыл бұрын
Dark matter is assumed to exist because our theories brake down when trying to explain how galaxies stay together without it. Could it not be that our theories are just wrong?
@orlock209 жыл бұрын
ajuk1 There is no theory on why galaxies behave the way they do. The math changes for every hypotheses.
@xokocodo9 жыл бұрын
ajuk1 Yes. This is a valid question. Modified Newtonian Dynamics is a theory that accounts for the galaxy rotation curves by modifying laws of physics at larger scales.
@UnstableVolt8 жыл бұрын
+xokocodo Modified Newtonian Dynamics also requires dark matter to work. ;)
@TCHRacoon7 жыл бұрын
That is always an option. But because our theories give the right predictions in so many other areas it is more likely that there is a mysterious dark matter that we haven't accounted for, rather than that there is a completely alternative explanation for everything out there. But believe me, there's thousands of incredibly smart people trying to come up with alternative explanations!
@SandroAerogen6 жыл бұрын
We didn't know that light traveled at finite speeds until someone observed the eclipses of the moons of Jupiter very carefully and saw discrepancies with what Newton's theory of gravity predicted. Having confidence on theories that have repeatedly proven themselves true allow you to postulate the existence of otherwise unknown entities to explain anomalies in our observations.
@themightiestofbooshes94439 жыл бұрын
I found some dark matter in my toilet earlier... xD
@AlexOjideagu28 жыл бұрын
you should see a doctor
@Akash_Tyagi_937 жыл бұрын
You didn't get the joke, pal.
@davidsweeney11111 жыл бұрын
wow this completely blows my mind, please keep us posted on this subject and also bring us up to speed with dark energy story, Thanks, David.
@McDaniel7711 жыл бұрын
A theory should explain the interactions you observe with as few assumptions as possible. My theory (plasma-electric-universe) makes only two assumptions: 1. Protons and Electrons are objects which represent the elementary charge. 2. The electromagnetic interaction is based on the elementary charge, it's only one force. Neutrons decay to an electron and a proton, it is a composite of these two elementary charge particles. The EMI-Theory explains everything, redshift, galaxies, solar system etc.
@jb043362810 жыл бұрын
We don't know if dark matter really exist, we only know that galaxies are rotating much faster than their mass should allow.
@thgeremilrivera-thorsen955610 жыл бұрын
There are many other clues that Dark Matter must exist. The CMB power spectrum, galaxy cluster masses, galaxy cluster interactions etc. etc.
@xokocodo9 жыл бұрын
Thøger Emil Rivera-Thorsen ...Gravitational Lensing
@yevgeniysavelyev689210 жыл бұрын
Nobody can see that dark matter, nor can detect, measure, prove, affect, etc. But at that the physicists know for sure and tell exactly how much space it occupies and gravity it has. How can one assert something about anything if one knows nothing about it at all? I wonder if the physicists ever were struck by the thought that their knowledge of the universe is near the absolute zero.
@amalguptan67166 жыл бұрын
They have proved it through equations
@stargazer76445 жыл бұрын
Because we don't "know nothing about it at all". We know it interacts gravitationally. We can see and measure this affect. We can calculate how much of it is needed to cause the effects we observe. And the answer is, a lot.
@davidwilkie95516 жыл бұрын
The "Vacuum Energy" effect of stiffness or hysteresis has an equivalent in water, in that warm moving water is "softer" and more yielding than cool still water, and the same applies to the atmosphere, ..and thixotropic fluids of any type and scale are a property of synchronization, which blends in with mass, gravity, momentum and large "objects" astronomically (?), inertially-gravitationally bound or "congealed". (Like chocolate pudding)
@cgdermot10 жыл бұрын
Cool stuff, good brain food.Dark matter sounds like skimming stones over water at the beach, but you can't see the stone. Each time it hits the water we see the ripples but never the stone. Cool.
@deus_abscondis9 жыл бұрын
Smart attractive female physicist/astronomer with chocolate pie talking about... er... I got a bit distracted 😥
@deus_abscondis9 жыл бұрын
+Silence is Golden Duct Tape is Silver That's a smutty interpretation. BTW Duct tape comes in black and silver 😜
@3manthing6 жыл бұрын
Same
@Szederp10 жыл бұрын
Love this girl....unlike emancipated american whores she does not need to shout or take an aggressive stance to prove a point and garner attention. She is just smart and cute.
@vrendus52210 жыл бұрын
I feel that DM is leftover aftereffects of comprehensive dynamics placed on past conventional matter as humans understand it.The most difficult part in understanding it, is how DM's interreational status compares with standard matter as we know it.I feel that expressively this would be categorized as base weights measurements based in a comparative quantitative survey.
@Ryco11711 жыл бұрын
To answer the car collision question (assuming gravity is negligible) nothing would happen because dark matter has no charge, thus no electrons repelling each other and stopping one material from passing through another, which we perceive as a "collision"
@ekthaKC9 жыл бұрын
why are they presenting this as a 'fact'?
@Vinthis19 жыл бұрын
Because it is an observable, measurable fact.
@Vinthis19 жыл бұрын
ek_tha_KC I don't think you understand. We can measure a gravitational anomaly, and we have named it's cause "dark matter" as a placeholder. It exists. Whatever theory you are talking about, it should account for this measurement.
@legisnuntius9 жыл бұрын
Vinthis1 By its very definition, you can't observe dark matter. It's inferred, not observed. I don't think you understand it very well.
@Vinthis19 жыл бұрын
legisnuntius The gravitational effects are observed. The cause of the effects is inferred. If any theory is going to be accurate, it is going to include these effects, regardless of what explanation it has for them. The physicists in the video presented the effects of dark matter as fact, because they are. None of them provided an explanation for the effects as fact: 4:24 and again at 7:24.
@ekthaKC9 жыл бұрын
Vinthis1 so you are saying effects are a fact right?? not the dark matter...dark matter is just a proposal and a possible reason for the effects. We still do not know whether there is really any thing like that.
@zerexthecool11 жыл бұрын
My thought as always been, instead of dark matter to explain why galaxies are spinning strange, what if we delved deeper into gravity? What if there is more to the gravitational constant? What if it was not a constant at all, but a group of variables that we do not understand because in our solar system its the same variables, and its not until you go out further, that new variables are used? That's just what is floating in my head, but I hope it can get tested someday.
@MrTwisted00311 жыл бұрын
lol...you're right. And I would say they are "technically" air cooled, since none of the water cooling parts are on the electronic components. I would assume the "more parts, the more likely a break", or leak in this case. So they wouldn't "water cool". Just my opinion.
@MrJohnCitizenSmith11 жыл бұрын
1 theory is that although dark matter can create a gravitational effect for regular matter, it may not attract other dark matter particles the same ways. Regardless stars run on the fission of atomic nuclei which not something shared by most particles know today.
@smacman687 жыл бұрын
I wish I were smart. So much of this stuff I can grasp at a conceptual level, but it eludes me. Especially the idea of general relativity. How time moves slower in other time frames, like a rocket speeding by is something I will never fully grasp. Like this dark matter thing. I just have to assume it to be true and move along with my life.
@HaraldHusum11 жыл бұрын
What we identify as dark matter shares many characteristics with neutrinos. One considerable difference, though, is that dark matter particles is predicted to be quite massive, but neutrinos barely have any mass at all. (The standard model predicts neutrinos being massless, but experiments have shown them to have a tiny mass.) Thus the the neutralino is instead offered as an explanation for dark matter. The problem here is that supersymmetry is having trouble showing itself at the LHC.
@S1nwar11 жыл бұрын
a physics professor from my university once argued passionate that a much better explaination for the observations that lead to the assumption that there is dark matter would be a quantum theory for gravitation. i cant remember the exact argument but he talked about how the additional gravity from the dark matter only seems to exist in these huge galactic scales of thousands of lightyears, influencing galaxy formation but beeing negligible on the scale of our solar system for example.
@brendan624427 жыл бұрын
Neptune is pootling along very slowly!
@DickJohnson343411 жыл бұрын
Buddy asks excellent questions.
@TheFallenCreed11 жыл бұрын
GOD DAMN!!! I come onto KZfaq to help me forget my chocolate cravings and run into this video!
@PrivateAckbar10 жыл бұрын
The Astronomers and theoretical physicists seem by far the nicest people you speak with Brady.
@Groaznic11 жыл бұрын
This lady is super nice and an excellent speaker as well.
@HaraldHusum11 жыл бұрын
Anti-matter is essentially matter, but with opposite electrical charge. It thus fits in to the matter part of the pie. It probably isn't too far fetched to assume there exists anti-dark matter as well as well, but this would then fit into the dark matter part of the pie. The point of the pie is to show the total energy density of the universe, one can of course split the parts in to matter/antimatter, but it is essentially pointless, because they have the same traits.
@mynameismatt201012 жыл бұрын
I have one problem with the theory of dark matter existing while interacting with itself and with gravity. The problem is that it would, in the same way as with regular matter, converge in very small spaces and form dark matter back holes. Now if those existed we would be able to observe them in much the same way we observe black holes consisting of matter, and with the ratio of darkmatter to matter being so high you'd think they'd be more commonly observable, and also by conventional methods.
@McDaniel7711 жыл бұрын
There is much more observation and interpretation necessary. But to give you an example for EM interactions. The Coulomb-Force is 10^36-times stronger than gravity, so even an infinitesimal small amount of EM forces overwhelms gravity. You can't see electric or magnetic fields, what you see are currents build out of real matter in plasma state. Electrons orbit, if a magnetic field is present. At the same time, these electrons generate a magnetic field. That's called electromagnetic induction.
@89Ayten11 жыл бұрын
If a dark matter unit is in line to come into contact with a conventional piece of matter, say an electron, something extraordinary happens. When it's within a plank length it disappears into a separate dimension or universe or what have you. It then reappears a planks length away on the other side. Since light behaves like a particle it does the same to photons. Hence its visual imperceptibility.
@PatrickBijvoet9 жыл бұрын
Thank you for all those wonderfull video's. I'm a teacher on high school in the Netherlands, so this is far from my daily work. But I love how it trains my brain. I started to get interested in these kind of video's, when I say a documentary on the Fermat theorem a few years ago. Now I ended up here. Sorry for my poor English. It is not my native language.
@MrTwisted00311 жыл бұрын
From what I understand, some/most Data Centers use a hybrid water-A/C cooling unit for their servers (basically a refrigeration unit cooling the water that's used to cool the air...i believe). But supercomputers are so advanced and different in such ways, I wouldn't have a clue to what would be best...like hot water?
@wlee5511 жыл бұрын
The name of the lecture that explains why the sky is blue during the day and red at sunset is called For the Love of Physics - given at MIT.
@kappesante11 жыл бұрын
so, yes, in our solar system for example, neptune is orbiting very slowly compared to mercury. and will keep orbiting slower than mercury even if the sun was 2x massive. the only way to speed up neptune is to add so much mass to it, to let him interact stronger with the sun. the problem here is not the sun and its mass, but neptune. small and distant.
@mrmeatymeatball11 жыл бұрын
"Pie-hungry" a special kind of hungry requiring it's own category.
@Ch3mG33k12 жыл бұрын
Brady, we need an update on this video! The LHC might be able to elucidate the identity of Dark Matter and I'd like to hear the profs talk about it.
@AB-or1yo6 жыл бұрын
One of the reasons why I watch this video again and again is, beside it‘s great, this fuckin awesome lookin pie..
@MattStum12 жыл бұрын
Having just watched 6 Dimensions, Extra Dimensions, and Dark Matter back-to-back, it seems an obvious suggestion that the anomalies we see in gravity distribution would be caused by something going on outside of our 4 observable time-space dimensions. Perhaps a video to explain how this compares to the hunt for exotic "dark matter" particles?
@nicadi200511 жыл бұрын
As far as I know, there aren't any holes remaining to be filled in the Periodic Table, anywhere up to the transuranic elements. Thus, the only *new* elements we could still discover are the super-heavy ones... However, these elements are extremely unstable, with very short half-lives. Obtaining them is only possible in the lab, and only for a limited time. There is a theory which claims that, beyond a certain super-heavy range of unstable elements, an "island" of stability may exist...
@Jesusisyhwh11 жыл бұрын
I just found an article about the possibility of the confirmation of Dark Matter by the particle collider on the International Space Station. Hopefully Brady does a video about it.
@Charlie2531games11 жыл бұрын
What I is that there are many different types of matter, all interacting with completely different forces, and dark matter is simply all the types of matter that aren't the same type of matter as us.
@demoniack8112 жыл бұрын
The more complex a system is, the higher the probability of something failing is. It's better to keep vital systems simple.