The Real Meaning of E=mc²
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- Опубликовано: 14 июл 2024
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You’ve probably known OF E=mc² since you were born, and were also probably told that it meant that it proved Mass equaled Energy, or something along those lines. BUT WAIT. Was E=mc² explained to you properly? Mass equalling energy is mostly true, but E=mc² actually describes a much more interesting, and frankly mind-blowing aspect of reality that likely wasn’t covered in your high school physics class. Join Gabe on this week’s episode of PBS Space Time he discusses THE TRUE MEANING OF E=mc²
Extra Credit:
Einstein's 1905 E=mc^2 paper (English translation):
einsteinpapers.press.princeton...
www.astro.puc.cl/~rparra/tools... (more modern notation)
Veritasium: Your Mass is NOT From the Higgs Boson
• Your Mass is NOT From ...
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See people always think Physicists talk really fast. In reality, its the world that is moving really slowly around them as they have so much energy and are experiencing the relativistic effects of Special Relativity.
hahahaahah
Nerd
It might have something to do with the fact that this dude doesn't inhale EVER! 😂😂😂
That explains Red Bull
😂😂😂😂
So when you turn a flashlight on, it gets lighter :-D
Good one
Rosie j just about to say that
Well done
nice! LOL xD
Trevor Best all I know is.. when I take a dump, I’m lighter!!!
That the sun can lose 4 billion kilograms of its mass every second, second after second, and still only be _less than one tenth of 1% lighter_ even after 10 billion years of doing it, is truly mind boggling.
Sun is just a small time fish in the ocean. Imagine the output of UY Scuti.
Also, did you know that for every 3.12hrs there on the sun, 100 years passes here on Earth.
@@TimothyTooher92 wrong
@@benspersonalacc2326 he may be wrong, but we will never know how much the Sun bends space/time. The Sun is HUGE and it obviously affects space/time very differently compared to us on Earth. And I'm not just talking about the surface of the Sun.
@@TimothyTooher92 child stop watching RUclips and go to school :👴
This guy is putting out very valuable information, explaining a lot. But I think that for most of us he just plain goes too fast. But the content is excellent. I appreciate the video.
You're right he's way too fast
i actually watch most youtube videos at 1.5x, so this speed is perfect
I was thinking the same, way too fast. I just tried it 0.5, and 0,75 speed. A lot better. And at 0.5 it's funny too, but clear.
That's true
he is right bit he is also quite wrong
He was a machine gun in a previous life.
LMFAO 😂😂💀
R u religious?
Ikmal Axl12 R u sexy?
@@brianhyde5900 yes
@Ikmal Axl Lol, yes, I can see that. No, I am not religious but I am a theist. So tell me, your name... is Ikmal a name or an abbreviation for Institut Kelautan Malaysia?
So im not fat, I'm energetic lol
Energy dense... yes fat ass :-)
Or you’re moving really fast
Yes, man, you're a nuke!
Lol. Your energy is stored as fat. Like a battery.
0123mandatory No, youre fat.
I love how physics feels million times more interesting now that I'm not forced to learn it as I don't have the subject in college unlike my school days
Rewatching this 6 years on and it's occurred to me that they totally dropped the ball with the name of the challenge... It should have been the "E = MC Hammer challenge"
Highly underrated comment
There has to be a Captain physics
I hate your pfp, actually scared me for a second, smh
How do you understand....Gravity
Ha!😅
eminem has been real quiet since this dropped
shhhh
Lol 😂
I didn't get it...
I don't get it
This guy's lyrics make more sense than Eminem's.
My phone is becoming heavier due to your KE
chaosworld chaosworld 😭😭😭😭
Nailed it
when you charge a phone it becomes heavy. when you use it it becomes lighter.
Kinetic energy..
Overpowered comment😂
Why do I understand you so good?? I don’t even need to rewind, it’s as if you put it together perfectly.
This is a great topic -- I just wish he wasn't yelling at me while trying to explain it.
He needs to make it exciting for the kids, I'm sure you can find a channel with 1000 views who explain it differently.
@@Martin-qb2mw he talks too fast. I had to watch it a couple of times to understand it and also pause it.
If he slowed down his delivery, more people would understand, and it is a great subject close to my heart.
Fair enough , but this video is pretty old, since about 5 years ago , the show has been hosted by Prof. Matt O'Dowd and it's still making episodes. Maybe you'll like his teaching style check some other episodes out
@@Martin-qb2mw what kinda kids are gonna watch vids about science and physics
usually i increase the playback speed of yt videos, here i had to watch it at 0.75x😂
you're not alone😜
😂😂😂😂🏴🤪
Knew I'd find comments aplenty about verbal delivery speed. Perfect for RUclips environment of short attention spans. Intent viewers have the option to slow it down, watch it over again, or both.
i watched it on 1.5x speed
same
I wonder how much mass he lost making this video.
A kilo'th... Whatever that means😂😂😂😂
Lol 😂
Lol🤣
You can also say " how much calories did he burn......"
We lose significant amounts of mass continuously by: 1. water loss on breathing/sweating; 2. carbon loss via exhaled CO2; 3. heat loss through the air (convection); 4. infrared light emition. Activity levels do influence this rates
I love how you let the students know you are friends with their teacher. Obviously you're not on Space Time anymore, but that was still a cool thing to do.
Man there’s no video that goes through why speed of light squared is used, minutephysics is the only one that glances over it by giving the equation for Doppler effect but no one goes through that part.
Well in the ratio form m = (E/c^2), it’s not too hard to see that E is some number in units of kg*(m^2/s^2), so it makes sense that to get to units of mass , ie kg, we need to divide by some velocity squared.
What velocity that happens to be can easily be experimentally determined by measuring mass gain in endothermic processes and mass loss in exothermic processes. That’s one way to easily calculate that it must be c.
The real important thing here that isn’t explained well enough is the consequence that as long as mass-energy equivalence exists, mass could never exist with an infinite speed of light as the denominator would be infinite and any amount of energy would still have zero mass.
This is also often missed by those videos which claim to simulate what things would be like if c was nearer a human-comprehensible value. If c was a much lower number, say 30 m/s, you would not be able to walk around marveling at the visible Doppler shift and length contraction/dilation of everything around you as you changed your velocity. You would be quite preoccupied with the fact that your mass and the mass of the earth had just both increased by 7 orders of magnitude. Given the mass of the earth is about 6 x 10^24 kg and 80 Jupiter masses is about 3 x 10^29 kg, the earth would instantly turn into a star. Specifically, a star about 15 times more massive than the sun. And of course even this would not even be the most pressing issue, as the Sun itself would instantly become a supermassive black hole of 10 million solar masses.
@@MegaBrokenstar Wouldn't everything be 10^14 times more massive? As c is squared, ratio is (3E8)^2 / (30)^2 = 10^14 ?
Recommend watching at 0.75% speed. Takes the methamphetamine out of the equation.
0.75%speed🤔 actually is 0.0075 times of the original speed🌚
Tsz Chung Liu n- no.
@@tszchungliu448 True that =)
@@tszchungliu448 That's how slow it needs to be. Lol just jking
This guy needs to take diazepam so we don't have to drink 3 coffees to keep up.
I wish teacher would teach us this and actually make a deep conversation to us about this in middle school or freshman year in high school. I adore all this stuff, it never gets boring. There's so many amazing things to learn regarding space time, astrophysics, quantum mechanics, mass, atoms, space, black holes,etc .
If you're still interested. Try looking into purchasing "introduction to physics " textbooks or any other advance subjects online. Why wait to learn, right? Best of luck :)
There's no point in learning this stuff without the math to go with it and that is too advanced for high school. You'd probably find if you sat in on a physics university lecture on the subject that you wouldn't like it so much because it isn't made as entertainment like this video.
Learn all you can, but learn calculus, because you will never understand physics without adequate mathematical preparation.
How do u understand ?
Isa pang bobo...Bobong tao pala itong si Lily C... si collins ka ba?BOBONG TAO KA PALA....Subrang bobong tao.. hindi maruning makaintindi...illiterates....ILLITERATE pala kayo.. ILITERATES ......
Another day has passed without using y=mx+c
My all time favorite episode of Space Time.
Talk fast. Make mind blowing sense. That's how you get multiple views from the same viewer. Gotcha. This dude is something.
that doesn't actually work u can't get more than 1 view from the same ip
He speaks too fast. By about 50% in my opinion.
Cori Wood .75 speed. 👍
personally i slow down the video speed on youtube setting. :)
Just Be Upon another watch of the video, this time NOT at 3am, i found its not too fast and I was able to follow it. Thanks though, i didnt even notice there was an option to slow down the speed on RUclips!
Could you talk a little faster? I'm still catching some of this.
You can speed up the video in the video options on most standard platforms.
jealous
hhahahaahahahahah
VaterOrlaag he weighed 89lbs at end of video.weighed 189 at start.
No kidding this should be a 20 minute video!! Thanks for nothing I heard about 10 words what are you a speed talker.
Nice explanation and thanks for the info on this one😊
I don’t understand the possibility of negative potential energy. I’d love to see a video that expands on that
Simply accept it as a fact. We assumed energy was always positive like how we assumed many things that turned out to be not true. The simple fact I guess is energy is relative and thus can be negative.
If I understand correctly your words have more mass than mine because there’s more energy
You've got an ass full of mass, got any word's?
Haha
@@roshmidutta4336 u didn't got the joke🤣
Is that a pun?
Yeah I got it😁😁😅
Think 0.75 speed is good for this video
spread the knowledge save the nature tea
Yeah
Really? thanks to the pictographs and constant background analogies and representations following his phrases, it's 900x easier to follow than a prof. and a chalkboard. I'm at 1.25x speed.
Yeah
Watching it high and him saying mass isn’t anything at
Great video, thanks a lot! just one question:
Do I understand this correctly:
- mass of an atomic nucleus < mass of all its protons and neutrons
- mass of a single proton (or neutron) >> mass of the three quarks
In both cases the potential energy should come from the strong interaction, why is it negative in the case of a nucleus (making its total mass being less than the mass of its constituents) but positive in the case of a single nucleon (making its mass bigger then the mass of its constituents)?
A good teacher makes the lesson simple.
A braggart makes it complicated.
I don't think he's correct to say that the potential energy of bonded particles is negative. I think he meant that the differential between the potential energy of unbonded atom constituents from the potential energy of bonded atom constituents is negative. There's no such thing as negative energy. Potential energy can only be negative as a dynamic value, i.e., if the system is evaluated at two states. He was trying to say something shorthand and just threw me into a fifteen-minute loop of confusion. Please like this so that viewers will be able to understand it correctly.
Potential energy is already a differential. you can only know the value of potential energy if you have a zero value somewhere. Like gravitational potential energy in a gravitational field.
As do you work to raise something, some of that spent energy goes into gravitational potential energy and turns that into a positive value. when you drop it and reaches the ground you can say its potential energy is zero, if you set the zero value to the ground level.
In truth, you could say the zero value lies in the centre of the earth, but then your equations would be less readable and manageable.
So you can have negative potential energies if the zero value is , as he put it, when 2 particles are infinitely far apart. If you bring them less than infinitely far apart, the potential energy is negative.
there is no universal zero value for potential energy, depends entirely on the definition. It just has to make sense for a generalization of what you are measuring and measurements other people have performed
Its a physical convention....
It arises because, we assume the potential energy of objects infinitely far away as zero...
In order to 'fall into' each other (due to gravity or electromagnetic attraction), they need to lose energy.
This loss can be in the form of heat, or radiation or gravitational waves (in case of earth-sun system, or two merging black holes)....
Overall, the net result is that you end up with lower energy than you initially started with.... (At infinity)...
So, we can assume the energy at infinity to be a finite value, but it will make a lot of mathematical confusion... It makes it easier to assume it to be zero and gravitational potential energy as negative... .
The actual energy isn't negative.. The negative number only indicates that the two objects lost energy during the process of gravitational merger or chemical bonding...
@@mahadevparmekar2565 So, a loss of energy can result from a gain of stable mass?
@@jaytomson7052 I didn't understand what you are asking...
Mass and energy are equivalent when measured together in a system..
So, if you lose energy you would lose a bit of mass too...
Thats why H2 molecule has slightly lower mass than two H atoms. And He nucleus has lower mass than 4 protons.
Because they lose energy during chemical or nuclear bonding..
When two black holes merge, the resulting third black hole has lower mass than the sum of the masses of the colliding black holes... Some mass (energy) is always lost during the merger.
If there is a positive, there is a negative opposite.
The answer to the question at the end is that you cannot pick up Thor's hammer, so its a trick question.
This guy explain much much better than other in my opinion
I just lost all my brain cells
i am amazed of how fast his brain throws out all those words
he has a script ;)
I woouldn't buy a car from this man.
+Muhammad Hanif ☺👍
Same here
I think he has memorize all sentences before making this video
Before working out I was 175.5 but after half an hour of intense workout I become 175.6. Now understand why, Thanx Einstein
Nidhin Vinod lol
shouldn't you become lighter? because you lost all that energy working out
I think you would have got much lighter because of water lose
because you inhale lots of air that increase your mass
lol😂
Toran Gurung idk y I’m laughing at this 😂😂
Doing a rough analogy(please correct me if I'm wrong): Energy and mass are like ice and vapor; ice may turn to vapor and vice versa. But there are no transformations, only changes in the arrangement of the water molecules. Therefore, energy is just mass rearranged in some particular ways and vice versa.
Well, actually all energy has mass because mass is a property that all energy exhibits. But photons are the only form of energy to not have mass because only rest energy has mass.
The mass of the total amount of coffee this guy drank before filming, tends to infinity.
Thank you for not speaking any slower, that's how you keep my attention.
The speed depends on your biological preference for recovery and excitement to finding something familiar. Everyone has perfect attention, it's the speed that matters to how we are able to capture it and be excited enough to follow along the information given.
A little info on curiosity
Thank you for not speaking any faster otherwise you might have used up all the energy in the universe. I might have been left to suffocate away "negatively massed" oxygen atoms.
@@Ray2311us well that is perfectly make sense, thanks for the shared
Ya I too find it easier to concentrate when someone speaks faster than the speed I am used to
I was just explaining this to my cat last night. For some reason he figured out how to open the liquor cabinet.
woah, this was super helpful tysm!
The only 2 words I could undertand here....
Mass, energy, I did not undertsand a single word other than that
after watching this video, my tablets mass had decreased..
At first i thought i meant you had to reach for your tablet stash and pop a few to make it through the video
😂😂😂
Lol
Yeah cause you’re tablet gives of energy
+Bob Yes, yes it does.
Awesome video, Gabe! What if the mirrored box had a tiny hole in it that allowed a bit of light to escape, would the mass go down then?
yeah
It's Okay To Be Smart yes
It's Okay To Be Smart Wouldn't it go down ever so slightly anyways, since mirrors do not reflect 100% of light?
UnknownXV no because even though mirrors dont reflect 100 percent of light, the energy of the light is still in the contained system.
kevin smith If some photons escape, some of that energy escaped too (since light has energy).
No matter how hard I try to understand this,I always fall short! So frustrating
I just wanted to wish everyone a very Merry Restmass!
It would have been a WHOLE lot easier to understand if you STARTED with "Mass is a property that all energy exhibits. When we measure mass we are actually measuring the cumulative energy content of objects whenever you use a scale." Instead of explaining that at the end.
Seriously.
+Talik And at school they tell you scale measures mass (facepalm) - Well at least your only forced to live in that delusion for your first 12-18 years, or until you seek to discover the truths yourself. Although questioning this too early could destroy your schooling career, if your in the wrong part of the world, and greatly limit your own potential for a period of time.... Which some people can never escape from. I just hope that schooling can evolve as quickly as our general understanding of the universe is. At elementary level that is.
I... I honestly can't tell if this is an insult or trying to point out that the school system should be restructured. If it's the later then I totally agree.
I'm definitely NOT a scientist, so it's easier for people like me to grasp a new concept if we're told the conclusion first and then have the explanation as to why.
School system restructured at earlier stages. It seems pretty legit at College and Varsity level (from my understanding)
+InSilentSpaces Yeah, but the school system is essentially teaching kids incomplete/misleading information. Once that info sticks to the kids that actually do well, they will then go to university and should be more familiar with the misleading information. We then basically expect them to for the most part forget what they were judged on for most of their life and to learn the, as far as we know, truth. To me, this seems like a really screwed up system. We're basically judged for whether we're talented enough to go to post-secondary schooling based on how well we memorize things that are mostly wrong according to modern science.
+InSilentSpaces I wish the person making the presentation would slow down a bit while doing so. Is he suffering from hypertension or what?
Sry mate, you selected the wrong career, you should be working with Eminem.
You know I'm kidding.Excellent video btw!
omg I tried rapping like Eminem it didn't go that bad
@@Evtrex13 I know! I tried crapping like John wyan and died.
He doesn't talk that fast
😂😂😂eminem
Hehe
Thank you so much I understand it clearly you explain it like your my elementary teacher.
The flashlight part really cleared up my understanding.
6:45 I thought you were going to say "Every time he (Veritasium) says 'gluons' in that video, take a shot.
Lol 😆😆😆
Excellent content and presentation.
Since the subject matter is more complex, it would be helpful to slow down the presentation to enable the audience process the meaning and implications of what is being explained.
Adjust the RUclips payback speed if you need.
@@DJ_Force THE PRECISE, SIMPLE, AND CLEAR DERIVATION, ORIGIN, MEANING, AND CONSTRUCTION OF E=MC2:
E=mc2 is taken directly from F=ma. BALANCED inertia/INERTIAL RESISTANCE is fundamental. Carefully consider what is THE SUN AND what is the speed of light (c) ON BALANCE. The stars AND PLANETS are POINTS in the NIGHT SKY. So, consider what is THE BLACK “space” of what is THE EYE. The sky is blue, AND what is THE EARTH is ALSO BLUE !! c squared is CLEARLY understood as a dimension (of what constitutes SPACE) ON BALANCE, as ELECTROMAGNETISM/energy is gravity ON/IN BALANCE !!! GREAT !!! I have CLEARLY explained or proven the mathematical unification of gravity AND ELECTROMAGNETISM/energy (ON/IN BALANCE), as I have demonstrated the fourth dimension AND the term c4 from Einstein's field equations (along with TIME); as ELECTROMAGNETISM/energy is gravity (ON/IN BALANCE). I have proven how and why this is mathematically consistent with F=ma AND E=mc2. TIME dilation ultimately proves on balance that ELECTROMAGNETISM/energy is gravity (ON/IN BALANCE). In light of what has been CLEARLY proven here (on BALANCE), think about what is THE SUN in DIRECT comparison to/with what is outer “space”. GREAT !!! It ALL CLEARLY makes perfect sense, as BALANCE and completeness go hand in hand.
I'm going to more precisely explain the true origin (and the full meaning) of the equation E=mc2. This NECESSARILY represents, INVOLVES, AND DESCRIBES what is possible/potential AND actual IN BALANCE, as ELECTROMAGNETISM/energy is (CLEARLY and necessarily) proven to be gravity (ON/IN BALANCE). This also CLEARLY explains, on balance, why and how this equation represents a two dimensional surface OR SPACE as what is a BALANCED AVERAGE. Indeed, gravity AND ELECTROMAGNETISM/energy are (CLEARLY) linked AND BALANCED opposites (on balance); as ELECTROMAGNETISM/energy is gravity (on/in balance) !!! Energy has/involves GRAVITY, AND ENERGY has/involves inertia/INERTIAL RESISTANCE.
TIME dilation ULTIMATELY proves ON BALANCE that ELECTROMAGNETISM/energy is gravity. This NECESSARILY represents, INVOLVES, AND DESCRIBES what is possible/potential AND actual IN BALANCE. Indeed, TIME is necessarily possible/potential AND actual IN BALANCE; as ELECTROMAGNETISM/energy is gravity (on/in balance).
Gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE on balance, as ELECTROMAGNETISM/energy is gravity ON/IN BALANCE. This explains F=ma AND E=mc2. This ALSO explains why the rotation of WHAT IS THE MOON matches it's revolution. Inertia/INERTIAL RESISTANCE is proportional to (or BALANCED with/as) GRAVITATIONAL force/ENERGY, as ELECTROMAGNETISM/energy is gravity (ON/IN BALANCE). This explains F=ma AND E=mc2. I have truly (and fundamentally) revolutionized what is our understanding of physics/physical experience.
Compare the setting and orange Sun with the fully illuminated and setting/WHITE Moon DIRECTLY. They do basically appear to give off the same illumination, in fact. Notice that the curvature or shape of said Moon matches that of THE EARTH/ground (given a clear horizon, that is). What is THE SUN AND what is THE MOON are then the SAME SIZE in the sky as what is THE EYE. Moreover, these two forms manifest (or form up) at what is EYE LEVEL/body height. GREAT !!! Now, I have CLEARLY proven why AND how this is so. The tides are (CLEARLY AND NECESSARILY) ELECTROMAGNETIC/gravitational ON BALANCE. Magnificent !!! The tides are CLEARLY and necessarily subject to F=ma AND E=mc2, as ELECTROMAGNETISM/energy is gravity (ON/IN BALANCE). Again, the stars AND PLANETS are POINTS in the night sky; and the rotation of WHAT IS THE MOON matches it's revolution. The sky is blue, and THE EARTH is ALSO BLUE. Excellent. I have explained why the sizes of said Moon and said Sun are the same as what is THE EYE ON BALANCE. So, I have CLEARLY explained why the diameter of the Moon is about one quarter (at 27 percent) in size compared with what is THE EARTH.
By Frank DiMeglio
How does what is the Sun survive or exist against what is outer “space" ? The answer is, ON BALANCE, invisible AND VISIBLE SPACE in fundamental equilibrium and BALANCE. Here's why. (Think about TIME as well.)
WHAT IS THE EXPLANATION OF SPACE AND TIME ON BALANCE:
Invisible AND VISIBLE SPACE in fundamental equilibrium AND BALANCE. This necessarily and clearly involves interaction, on balance. Consider what is the eye (on balance). Logically consider what is a two dimensional surface OR SPACE ON BALANCE !!!! Notice the associated DOME AND the flat/black “space” of WHAT IS the eye AS WELL. Really think about it all. Consider WHAT IS THE SUN ON BALANCE. (NOW, think about time.) Outer “space” involves full inertia, AND it is fully invisible AND black. Consider one and three dimensions ON BALANCE !!! Now, consider what is the fourth dimension and the term c4 from Einstein's field equations. Think about ELECTROMAGNETISM/energy AND think about gravity (ON/IN BALANCE). Consider what is the man (AND THE EYE ON BALANCE) who IS actually standing ON what is THE EARTH/ground (ON BALANCE) !! Think about TIME !! Think about why there is something instead of nothing ON BALANCE. Consider that time is NECESSARILY possible/potential AND actual ON/IN BALANCE. Think about the man (THE EYE) that actually IS IN what is outer “space”. Think about time. The stars AND PLANETS are POINTS in the night sky ON BALANCE, and consider what is the speed of light (c) ON BALANCE. NOW, consider what is THE SUN. Think closely about everything in this writing. Balance and completeness go hand in hand. Magnificent. ❤️
By Frank DiMeglio
75% playback speed is perfect
@@Sidius303 You're correct! I just tried it, and 75% is indeed just right.
@@1VirginiaL this means when you slow it down your laptop has less mass because the video is not moving as fast. this is the tldr of the whole video
That video explains it all, earth comes from energy, everything we touch is energy combined together, it all started with a huge amount of dark energy and small pieces started forming their own tiny relations, it's like removing small pieces from a completed puzzle.
Never understood this until this video. Thanks good tutorial
Excellent! You really corrected some misunderstandings that have kept me from understanding basic physics for a long time. Thanks.
Where are you from
Someone needs to do a video on how this guy can talk non-stop with no breathing and not die.
You'd be watching video montage guides then.
beasthunt Hilarious
It's just a jump to the left
And then a step to the right
With your hands on your hips
You bring your knees in tight
But it's just the vocal throw-up
That really drives you insane
Thank you very much for this informative video..... Wow😊 it was awesome
Fewer cappuchinos would be advised before making this video.
Tubmaster 5000
And keep of the Sudafed as well.
Say that at speed of lighg
Too latte
If you can't explain it to others than You don't understand it by yourself
- Albert Hermann Einstein
Hey Einstein....Albert Einstein didn’t have a middle name Hermann was his dads name.
What? I didn't get it.
That's literally not very true tho some people are dumb or don't pay enough attention......think about it bro
@@mrepic8129 Bro I am just 15 and I got it in 1 go.I wrote it cuz the presentater is very fast enough while explaining.I can never tell someone dumb cuz Einstein was the world's smartest person ever but he didn't told someone dumb.He was thorough with his explanation.Even Einstein's driver understood everything Einstein said while Einstein used to go to conferences to explain his theories.You need to be thorough which the presentator isn't.Anyone can be thorough not only Einstein.But he isn't.I understood it at first go but there are many people out there who didn't bro....🤔🤔👍👍
@@jakeg3126 I know but I mentioned his Dad's name as a tribute to his dad who brought in the world the smartest person ever to live.Not only that but Einstein was not even able to speak at initial stages of his life.Then too his dad didn't used violence or scolded him for his conditions and didn't even scolded Einstein's mom for it....🤔👍
Watching this after 7 years and still made me go wow
Nice to see there are still smart people out there thinking about things more important then reality TV crap, thanks
as his words near the speed of light my understanding takes on a neg value.
This is the second video of Space Time with PBS that I've ever seen and I've got to tell you, bumping into this channel feels like I've died and gone to wonderland. I just can't watch crash course physics as much anymore because it's a little too dumbed down. But this channel gives you to you fast and straight and assumes you know what they are talking about when they say physics terminology. I love that. I love you guys so much don't ever stop making videos. However I have one question, will you ever do this for chemistry and biology? Those subjects never get any love and it's kind of sad, we want to learn those too and they've got great visuals!
I have never been mind blown this hard in my life
His day job is rapidly reading a whole paragraph of legaleze in 3 seconds in tv and radio commercials.
So what you are trying to tell me is the fatter I get, the more energy I have ? Got it! #roadtogoku
...or Majin Boo..
+Kristijan Mihov Yes!!...but more potential energy. No kinetic energy....sorry mate
Yes
can anyone explain why the c is squared?
I'm not a physicist, but I think it is because a little variation (+) of mass can potentialy create a huge amount energy.
who else thought of joe gatto from impractical jokers when you saw this guy?
Lol.
THANK YOU!
Larry!!
That's awesome; a well-rounded guy that can enjoy both Impractical Jokers as well as Space-Time
Ṗṛẫḃḝṩȟ Sṹɓéḓì me too
Why is mass multipled by the speed of light? Thank you for the really great video too:))
Gym trainer: Let's check your BMI
Me: You mean my BEI?
Dude, where has this guy been lately?!?! That was probably the most well-explained concept I've ever heard. Never even had the inkling to attempt to understand what E=mc2 meant. Now I feel like I could give a lecture. Amazing video.
The Real King ... see my explanation about the real meaning of E=mc2. It has to do with winning the lottery.
5:47 I think my brain just pulled a muscle...
Damn so hydogenn mass is 0000000000,1 geez that's crazy
I'm that guy Yeah¡ it’s easy to me.
Gonna have to watch this at least 3 times.
Your not alone. I have to hear this guy at least 3 times.
Remembering one of previous episodes about farts - if flashlight is farting out photons (are they massive or massless? that' s another question for which answer in my experience depends on context), will it start accelerating in empty space/vacuum?
By this definition, do photons actually have mass given that the have or carry energy?
gorRO roJO No, they do NOT, b/c an individual's photon energy can never be *localized* in a fixed region of space and made to have zero momentum (since it always has to move at the speed of light, as viewed by anyone). In this sense, you can also think of mass as being a property of energy that indicates whether that form of energy can be stationary, i.e. momentum-less. Individual photons cannot be momentum-less. But a whole BUNCH of photons bouncing off of mirrors inside a box CAN BE (each photon has a momentum vector pointing in different directions, but their vector-sum can be zero). So that *ensemble* of photons has mass even though none of the individual photons do. In contrast, an ensemble of photons moving coherently in the same direction must have momentum (no one can view it as stationary), and that ensemble will be massless. Get it?
I...think so, thanks, this was really buggering me haha.
PBS Space Time I get what you are saying, but still can't understand it completely. So if you take a bunch of massless individual photons and put them in a mirror box then they suddenly will get mass just because they are isolated? Or just the whole system gets mass because of photons, but not each individual photon itselft?
PBS Space Time Oh okay! I kept misunderstanding this comment. I read it as if you were saying photons have zero momentum, and it confused me because I thought E=pc. So even if they're in a fixed region of space, they still have momentum, but due to the fact that it's in a fixed area of space (like a mirrors inside a box), the photons keep bouncing off so they end up going nowhere, causing them to have zero momentum?
PBS Space Time by "can never be localized in a fixed region" do you mean because of "Heisenberg uncertainty principle" ?
Does anyone else think he looks like Joe from the Impractical Jokers? 🤔
I swear I've only come to the comments to make that same comparison 😂
True! 🤣🤣
lol… I thought the same thing
KINDA LMAOOO
Ok
This guy is literally amazing at explaining physics
This is the best E=mc² explanation. I have ever seen.💫
I just got this carpet cleaned and you've gone and put my blood and gray matter all over it.
Big Boss orginial, 10/10
+mosam beak actually both the spellings are correct.
"Grey" is for Gandalf, Earl, and hounds (proper nouns). "Gray" is a color (like that of a brain).
grAy= America, grEy=England
The amount of time it took me to view this video is greater that the sum of the seconds of each portion of the video that I watched
The proton/neutron part is a bit off or at a "wrong" timing, since you were talking about negative potential energy (negative binding energy), while with quarks it's positive (potential energy/binding energy).
Also not all energy has an equivalent amount of mass. For photons and EM-radiation E=mc2 does not apply, xept for in a photon gas.
Thank You for this video.
It's 03/14/2019 Happy 140th Birthday to the greatest Theoretical physicist that's ever lived. Thanks for opening our eyes to the perception of space and time in its entirety
I now feel dumb that a 4th grade class is watching this and half the episodes I have to watch twice to really understand, and I have a science degree! This give me hope for the next generation :)
So to make negative mass for an FTL vehicle, you need solid potential energy... going to be a tough one lol
This man gave me a new perspective of mass
Smoking on a chillum and watching Space Time.
These are two of my favorite things.
he lifted Thor's hammer, he's worthy
As the Hindu's, Buddhists and Yoda says, we are not crude forms matter but ENERGY, all life is Miya-energy spirit. But noes we must discriminate and hate each other over it.
Okay ...sometimes you need a COMIC re-lie-f to ease all the built up tension( energy) in the air..bravo...for proving Einstein right..release of energy DOES MAKE US LIGHTER....be-aware of your power and use the Force 4 good jet- EYE. ..okay.. no more energy for U.😀
@PBS Space TIme 2015: Submit Your Answers
Me in 2021: Sorry sir I forgot to submit😅😅😅
My brain is starting to frizzle watching this video. Now it's frizzling even more trying to figure out if the frizzling is making me weigh more or less.
The speed of this guys voice defies the laws of Physics! You should real slow when talking about this!!
The talking speed is a positive. Usually, I have to turn up the playback speed for most videos.
And, of course, if you don't like SpaceTimes rate, just slow it down. On youtube, go to the gear icon (settings)> Speed> choose
use .5 speed.
John Hewison : run.... run..... catch that flight.... It is departing... Slow down man....
i like the speed hes at you just need to pay attention
John Hewison you must be an idiot
I'm *Einstein* and I still didn't understand this video
Bing Bong bruh 💀
That's because not all Einsteins were created equal
👌
Mr. Bong I think u r far from Einstein
halfthestoryhas neverbeentold
Im also *Einstein* but i still dont get it
Question. Black holes after some time will always bring space time toward them, even though space time is expanding, after some time won’t that become a net negative bringing them together at a certain endpoint?
for as far as i know. black holes also constantly lose energy, altough extremely slow this does mean they wont neccisarily stay intact forever.
Thanks! A light bulb went off in my head when I watched this. Never understood before.
Sounds like magic to me.
Thank you I have spent more than 2weeks trying to understand this equation and I finally understood
Pausing between conceptual ideas would make this way more understandable.
In your mirrored box example, wouldn't the box still lose mass due to very small amounts of energy warming the walls and radiating outside of the box as heat? Even a mirrored service would still absorb some amount of light as heat.
He is assuming perfect mirrors. In a real scenario the light would be radiated away as heat in a very short time.
I really like your explanation. Thank you and congratulations for the show!!! Keep doing it 😉👍
Thanks
Great series thus far, one idea for the future could be adding timestamps for different ideas. I found myself sifting through the video to rewatch some of the tough concepts! Thank you for the time and effort it takes to make this stuff accessible :D
Please slow down. That's more than I can chew.
the smaller you are the faster time goes
Why,speak so fast?
Timestamps .... you mean like time travel lol :)
@@gilbertorossi6446 THE PRECISE, SIMPLE, TOP DOWN, AND CLEAR DERIVATION, ORIGIN, MEANING, AND CONSTRUCTION OF E=MC2:
E=mc2 is taken directly from F=ma. BALANCED inertia/INERTIAL RESISTANCE is fundamental. Carefully consider what is THE SUN AND what is the speed of light (c) ON BALANCE. The stars AND PLANETS are POINTS in the NIGHT SKY. So, consider what is THE BLACK “space” of what is THE EYE. The sky is blue, AND what is THE EARTH is ALSO BLUE !! c squared is CLEARLY understood as a dimension (of what constitutes SPACE) ON BALANCE, as ELECTROMAGNETISM/energy is gravity ON/IN BALANCE !!! GREAT !!! I have CLEARLY explained or proven the mathematical unification of gravity AND ELECTROMAGNETISM/energy (ON/IN BALANCE), as I have demonstrated the fourth dimension AND the term c4 from Einstein's field equations (along with TIME); as ELECTROMAGNETISM/energy is gravity (ON/IN BALANCE). I have proven how and why this is mathematically consistent with F=ma AND E=mc2. TIME dilation ultimately proves on balance that ELECTROMAGNETISM/energy is gravity (ON/IN BALANCE). In light of what has been CLEARLY proven here (on BALANCE), think about what is THE SUN in DIRECT comparison to/with what is outer “space”. GREAT !!! It ALL CLEARLY makes perfect sense, as BALANCE and completeness go hand in hand.
I'm going to more precisely explain the true origin (and the full meaning) of the equation E=mc2. This NECESSARILY represents, INVOLVES, AND DESCRIBES what is possible/potential AND actual IN BALANCE, as ELECTROMAGNETISM/energy is (CLEARLY and necessarily) proven to be gravity (ON/IN BALANCE). This also CLEARLY explains, on balance, why and how this equation represents a two dimensional surface OR SPACE as what is a BALANCED AVERAGE. Indeed, gravity AND ELECTROMAGNETISM/energy are (CLEARLY) linked AND BALANCED opposites (on balance); as ELECTROMAGNETISM/energy is gravity (on/in balance) !!! Energy has/involves GRAVITY, AND ENERGY has/involves inertia/INERTIAL RESISTANCE.
TIME dilation ULTIMATELY proves ON BALANCE that ELECTROMAGNETISM/energy is gravity. This NECESSARILY represents, INVOLVES, AND DESCRIBES what is possible/potential AND actual IN BALANCE. Indeed, TIME is necessarily possible/potential AND actual IN BALANCE; as ELECTROMAGNETISM/energy is gravity (on/in balance).
Gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE on balance, as ELECTROMAGNETISM/energy is gravity ON/IN BALANCE. This explains F=ma AND E=mc2. This ALSO explains why the rotation of WHAT IS THE MOON matches it's revolution. Inertia/INERTIAL RESISTANCE is proportional to (or BALANCED with/as) GRAVITATIONAL force/ENERGY, as ELECTROMAGNETISM/energy is gravity (ON/IN BALANCE). This explains F=ma AND E=mc2. I have truly (and fundamentally) revolutionized what is our understanding of physics/physical experience.
Compare the setting and orange Sun with the fully illuminated and setting/WHITE Moon DIRECTLY. They do basically appear to give off the same illumination, in fact. Notice that the curvature or shape of said Moon matches that of THE EARTH/ground (given a clear horizon, that is). What is THE SUN AND what is THE MOON are then the SAME SIZE in the sky as what is THE EYE. Moreover, these two forms manifest (or form up) at what is EYE LEVEL/body height. GREAT !!! Now, I have CLEARLY proven why AND how this is so. The tides are (CLEARLY AND NECESSARILY) ELECTROMAGNETIC/gravitational ON BALANCE. Magnificent !!! The tides are CLEARLY and necessarily subject to F=ma AND E=mc2, as ELECTROMAGNETISM/energy is gravity (ON/IN BALANCE). Again, the stars AND PLANETS are POINTS in the night sky; and the rotation of WHAT IS THE MOON matches it's revolution. The sky is blue, and THE EARTH is ALSO BLUE. Excellent. I have explained why the sizes of said Moon and said Sun are the same as what is THE EYE ON BALANCE. So, I have CLEARLY explained why the diameter of the Moon is about one quarter (at 27 percent) in size compared with what is THE EARTH.
How does what is the Sun survive or exist against what is outer “space" ? The answer is, ON BALANCE, invisible AND VISIBLE SPACE in fundamental equilibrium and BALANCE. Here's why. (Think about TIME as well.)
WHAT IS THE EXPLANATION OF SPACE AND TIME ON BALANCE:
Invisible AND VISIBLE SPACE in fundamental equilibrium AND BALANCE. This necessarily and clearly involves interaction, on balance. Consider what is the eye (on balance). Logically consider what is a two dimensional surface OR SPACE ON BALANCE !!!! Notice the associated DOME AND the flat/black “space” of WHAT IS the eye AS WELL. Really think about it all. Consider WHAT IS THE SUN ON BALANCE. (NOW, think about time.) Outer “space” involves full inertia, AND it is fully invisible AND black. Consider one and three dimensions ON BALANCE !!! Now, consider what is the fourth dimension and the term c4 from Einstein's field equations. Think about ELECTROMAGNETISM/energy AND think about gravity (ON/IN BALANCE). Consider what is the man (AND THE EYE ON BALANCE) who IS actually standing ON what is THE EARTH/ground (ON BALANCE) !! Think about TIME !! Think about why there is something instead of nothing ON BALANCE. Consider that time is NECESSARILY possible/potential AND actual ON/IN BALANCE. Think about the man (THE EYE) that actually IS IN what is outer “space”. Think about time. The stars AND PLANETS are POINTS in the night sky ON BALANCE, and consider what is the speed of light (c) ON BALANCE. NOW, consider what is THE SUN. Think closely about everything in this writing. Balance and completeness go hand in hand. Magnificent. ❤️
c squared CLEARLY means an INTERACTION on balance, as the stars AND PLANETS are POINTS in the night sky. Balanced inertia/INERTIAL RESISTANCE is fundamental. Consider E and “m" on balance. Great. The fourth dimension is only consistent with what is (on balance) a TWO dimensional surface OR SPACE ON BALANCE. Consider what is the eye. Consider what is the balanced MIDDLE DISTANCE in/of SPACE (ON/IN BALANCE). Consider invisible AND VISIBLE SPACE in fundamental equilibrium AND BALANCE. The stars AND PLANETS are POINTS in the night sky ON BALANCE. So, consider what is the speed of light (c) ON BALANCE. This CLEARLY explains the fourth dimension AND the term c4 from Einstein's field equations.
Time is NECESSARILY possible/potential AND actual ON/IN BALANCE, as BALANCED inertia/INERTIAL RESISTANCE is fundamental pursuant to F=ma AND E=mc2 in balance. A galaxy consists of invisible AND VISIBLE SPACE in fundamental equilibrium and BALANCE, thereby eliminating the need for any "dark" "matter" or "dark" "energy"; as ELECTROMAGNETISM/energy is then CLEARLY gravity ON/in BALANCE.
By Frank DiMeglio
“That’s thermal energy or equivalently randomised kinetic energy on a more microscopic level”. LOL a man after my own heart.
So in summary: mass and energy aren't convertible instead energy is what makes up the mass? I used to thought energy as only a mathematical concept which "we" used to have only on pen and papers to solve problems but it seems its a real thing as it makes up the mass which we can definitely "feel"