Physics Help Forum Energy mass conversion in microwaves.

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Jul 1st 2018, 01:51 AM   #21
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 Originally Posted by topsquark OUCH!! Nothing is made out of pure energy, kinetic energy or otherwise. Matter is not made of energy.
I didn't say pure energy. Read what I said about Compton scattering. When you take all the energy out of a photon or any other wave, it isn't there any more. Hence Einstein's E=mc² paper: "If a body gives off the energy L in the form of radiation, its mass diminishes by L/c²". In electron-positron annihilation to gamma photons both bodies give off energy in the form of radiation, and then they aren't there any more.

 Originally Posted by topsquark Keeping things simple, most of the time in QM when you have a collision there usually is energy converted from mass. That does not mean that energy is mass just as energy isn't enough to describe a particle... particles have various properties: energy, momentum, charge, weak hypercharge, and spin to name a few. Pure energy would not.
Think about a black hole's properties.

Jul 2nd 2018, 07:46 AM   #22

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 Originally Posted by Farsight I didn't say pure energy. Read what I said about Compton scattering. When you take all the energy out of a photon or any other wave, it isn't there any more. Hence Einstein's E=mc² paper: "If a body gives off the energy L in the form of radiation, its mass diminishes by L/c²". In electron-positron annihilation to gamma photons both bodies give off energy in the form of radiation, and then they aren't there any more. Think about a black hole's properties.
FYI: I'm not ignoring you... I'm at my parent's place taking care of my Mom (who just got a hip replacement) and my Father (who is blind and can't take care of her.) I haven't been able to get online for a couple of days and I'm likely to miss the next couple of days as well. I scan the Forum but I usually don't have time to answer anything beyond looking for spammers.

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