Light is amazing ~ some factoids

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Feynmann said, if not for the unfortunate choice of the second as the unit of time, that the equation is just:

e = m

Energy equals mass.

@bigdogg said
Feynmann said, if not for the unfortunate choice of the second as the unit of time, that the equation is just:

e = m

Energy equals mass.

If that were true then I'd have a lot more energy.
🙁

@orangutan said
If that were true then I'd have a lot more energy.
🙁

You've got plenty of energy! It's just that none of it is kinetic. 🤓😂

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very.

@bigdogg said
Feynmann said, if not for the unfortunate choice of the second as the unit of time, that the equation is just:

e = m

Energy equals mass.

Though Feynman was a brilliant physicist and a Nobel laureate and I am neither:

kinetic energy is mass times velocity squared. So you can't leave out the velocity in the equation otherwise you compare apples to oranges.

Of course in our Mass there is also some chemical energy, but this depends on the type of matter....so our big bellies help, but carrying around a big lump of quartz won't.

@david-burton said
so let me get this right if you are driving your car at the speed of light and you turn your headlight on ......nothing happens ?

You can turn them on all right, but they won’t illuminate anything ahead of you that you haven’t already overtaken anyway.

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It is all in your Gooster, Gooster! 😛 🙂]


-VR

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sums you right up.flakey as

@very-rusty said
OH don't mention it you're quite welcome, God know you need a prayer or more. 🙂

-VR

Yeah a personality transplant.

@david-burton said
Yeah a personality transplant.

I concur and the sooner the better. 🙂

-VR

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No. And it would not matter if the void were full of light and you did or did not turn on your headlights. You would not see it. Nothing, no photon or other form of information, from the car 100 feet away could catch up to you and impact on your sense organs. Neither could you receive a radio message transmitted from the other car.

There is an elementary Denkfehler in thinking that by turning on your headlights you see anything. You do not. What you see at terrestrial-speeds is not your headlight beams going out--what you see is your headlight beams reflected back to you from some object (fog or another car or a frightened deer in your path or whatever). It should be evident that two vehicles travelling in the same direction at c cannot send and receive back a reflection from the other vehicle travelling at the same speed.