Color video of Albert Einstein actually explaining E=mc2

newtboysays...

Hmmmm….
K.E. = 1/2 m v2
E = m v2 (only when v=c)
Does equation 2 include equation 1 or not?
Does total system energy E = 1.5m v2 (kinetic energy + mass-energy) or is the equation really E = 1/2m c2 + (K.E.)?

Anybody?

luxintenebrissays...

well...i'd say 1/2 m is an 'n'; v2 was a rocket; and K.E. is my cousin's initials...if that helps?

newtboysaid:

Hmmmm….
K.E. = 1/2 m v2
E = m v2 (only when v=c)
Does equation 2 include equation 1 or not?
Does total system energy E = 1.5m v2 (kinetic energy + mass-energy) or is the equation really E = 1/2m c2 + (K.E.)?

Anybody?

BSRsays...

Sorry. I slept in math class. Boooring.

newtboysaid:

Hmmmm….
K.E. = 1/2 m v2
E = m v2 (only when v=c)
Does equation 2 include equation 1 or not?
Does total system energy E = 1.5m v2 (kinetic energy + mass-energy) or is the equation really E = 1/2m c2 + (K.E.)?

Anybody?

noimssays...

Actually, I think I can verify this. I remember in physics going through a derivation of why E=mc^2 and being very disappointed that it was just a specialised case of your second equation.

newtboysaid:

Hmmmm….
K.E. = 1/2 m v2
E = m v2 (only when v=c)
Does equation 2 include equation 1 or not?
Does total system energy E = 1.5m v2 (kinetic energy + mass-energy) or is the equation really E = 1/2m c2 + (K.E.)?

Anybody?

BSRsays...

You're just showing off now. Just trying to make me look stupit.

noimssaid:

Actually, I think I can verify this. I remember in physics going through a derivation of why E=mc^2 and being very disappointed that it was just a specialised case of your second equation.

newtboysays...

Good, then I’m not just being dumb….But you don’t recall at what point it goes from KE= 1/2m V^2 to E= M C^2 …or the equation/function used to determine energy below the speed of light but above the 1/2 threshold?

Somewhere below C (speed of light) it gains up to 1/2 the total system energy, beyond simple kinetic energy…I’ve heard this alluded to as mass becoming energy, but never with any explanation how or even if that’s reality or just a mathematical “trick” to make the equations work…nor an equation describing the process. I only took year one physics….over 25 years ago.

noimssaid:

Actually, I think I can verify this. I remember in physics going through a derivation of why E=mc^2 and being very disappointed that it was just a specialised case of your second equation.

luxintenebrisjokingly says...

at least it is not in person.

a squirrel dropped out of a tree and landed on the hard dirt in front of myself & a friend. it then* quickly srambled up a nearby tree.

the friend then explain why the squirrel wasn't hurt. went off on a soliloquy** on terminal velocity. after he was finished told him...

"that wasn't the question i would have asked. i want to know why it fell. we just trimmed that tree, so did the squirrel try to make a longer leap or just - out of habit - jump to a phantom limb?"

we just stared at each other for a while.


*swear it made an 'eep' sound when it landed. like a dog toy.
**i sure wasn't listening

BSRsaid:

You're just showing off now. Just trying to make me look stupit.

BSRsays...

Maybe it was just...nuts?

luxintenebrissaid:

"that wasn't the question i would have asked. i want to know why it fell. we just trimmed that tree, so did the squirrel try to make a longer leap or just - out of habit - jump to a phantom limb?"

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