Mass? Energy? What's The Difference?!

In 1905, Einstein came up with his famous equation showing a relationship between energy and mass... but what does it really mean? The answer might surprise you.
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- or I made them myself...

[dizzyshmizzy]

That the Science Asylum is a great channel

[philjamieson]

I never get tired of thinking about ideas like this, even though I only really understand less than half of it. Thanks for explaining this so well that even I can grasp the central points.

[victora.delima]

P.S. The weirdest science fact I've ever heard is when I learnt that time was not constant, but depends on the relative speed. Blew my mind!

[Caspar__]

The weirdest fact I heard ist that Symetry leads to a conservation law

[bennokrickl]

The weirdest fact I guess is that the double slit experiments outcome depends on if it is measured or not, and furthermore that "measuring" in this case is any kind of interaction and has nothing to do with conciousness. Those two.

[rockapedra]

Just a nerdy comment that probably doesn’t help:

You *can* tell the difference between acceleration and gravity. Take *that* flat earthers!

The difference is what is confusingly called “tidal forces”. When you simply accelerate, the forces every bit of you feels are all identical. Gravity, however, pulls different bits of you towards the center of gravity of a planet (for example). That means different bits don’t quite get pulled in the same direction making you get a bit squashed. That’s what they mean when they say you get spaghettified near a black hole.

Being able to separate the two allows you to specify that the bit that is responsible for the tidal forces is the bit that bends spacetime, the other bit is just you accelerating *through* spacetime.

Told you it wouldn’t help.

[johnfarris]

Light experiences no time. Even though we watch it happen.

[victora.delima]

This video was very good! I've heard many times "E=mc^2 which means that matter can be formed from energy", but stopping there. There aren't many videos explaining this type of thing in simple terms and I would really like to learn some more... Hope there is a part II (and III) coming soon!

[fusiontricycle]

You can also use E^2=(mc^2)^2(pc)^2 if you don't know what γ is.

[zakirhussain-jsku]

In the equation E=MC Sq. only mass is considered whereas with mass the particles also carry electric and magnetic charge which also carry energy.

[kristellfadul]

I truly love your videos!! Each one makes me a little bit crazier!!
The weirdest science fact I've heard is quantum superposition. As an MIT teacher once said "superposition is code for I have no idea what's going on". The best way to describe the world!

[ТенелбайМакытов]

+The Science Asylum,

Light speed this is a motion, energy this is a total motion, then can not be energy less than light speed, can not be total motion less than motion.

Can not be

E<c

total motion<motion

Minimum energy can must about more than light speed, minimum total motion about more than motion.

[keshavdasggp]

I haven't heard yet anything more weird than Could not completely understand it Wish if you could make one more video which completely covers quantum Thanx

[Saitama]

"Gravity isn't a real force" I'm still coming to terms with that one!

[jeffborders]

C is for Causality. It's the speed of causality. Which could be sound frequencies or literal cause and effect. Anything that perturbs the E/M spectrum uses value of C to represent causality.

[tylerlowden]

I like your videos before the ad is done lol

[АндрейДынин-лт]

2)i am assuming - when exchange of energy between two points occurs, the path which energy followed is the path of least resistance. always everywhere-therefore I consider this a universal law.
1)energy exchange between two points max speed is C. Or C is max for energy flow.

[chriskeranen]

Thanks. My own simple answer to myself was that the 1/2 was for accelerating bodies. C does not accelerate. That would be a simple answer your specifics of your reply account most accurately of what happens. Good job.

[LBDRP]

The wierdiest thing thing I ever heard was that time and space are one thing

[DonDee]

I like the formulation "Mass is a property of energy", so the more energy something contains, the more rest mass it has. So my hot cup of coffee has slightly more mass than my cold cup of coffee. The energy of the MATTER inside my coffee is still much much larger than its thermal energy, thus the mass changes only insignificantly. (I think a lot of students have a missconcept to differentiate mass and matter clearly)