Current passes through carbon wire will produce heat and light radiation, what's the mechanism? Resistance lighting/heating? 1. Current makes...
Do you know in vacuum that thing does not spin at all? How you explain the fact? Isn't photon has momentum?
What is conduction? Vibration force/atom kinetic energy transfer by contact? What is resistance heating? Resistance caused atoms to vibrate faster...
You are talking about light mill. It does not work in vacuum. Light/photon has no momentum. If light has momentum, light mill will work in vacuum....
Thank you for the answers. I am not agree at all. If sunlight able to sail spaceship, why is laser beam not able to bend a flame? Isn't photon has...
Use fire to cock water in a metal pot, what's the mechanism? Fire emit photons, pot absorb photons, then pot emit photons into water, so electrons...
If you understand those answers, please explain it to me, thanks.
Heat an iron ball to red hot, put it in a glass bowl, how is the heat radiating out? Are the electrons in the iron bar change orbitals and emit...
How radio wave/photon hit antenna and produce current? The photons hit electrons in the antenna, so electrons change energy level and produce...
All the stars around us send photons to us since the big bang, where those photons go? Space expending speed is less than c, so all the photons...
Anyone has answers?
When we think about light we don’t really think about what it is made of. This was actually the subject one of the most important arguments in...
Laser is photon particle beam, those photons have momentum, able to cut through steel plate, but why not able to even move smoke particles or bend a...
Who ever knows the answer, please help me to understand. I have read wiki for all my questions, but there were no good answers. Thanks, I an...
Not simple. What is energy? How energy has anything to do with photon? Why is photons have different energy/color but all travel at c? If you use...
If a particle beam able to cut steel, it should be able to move smoke and bend flame easily, it should be able to produce strong air flow. You blow...
Thanks. That article says nothing helping me.
Yes, typo, thanks!
So what is photon made of? A fiction of matter? A tiny bit powder of an electron?
Why is particle beam/laser able to cut steel not able to move smoke? What the answer? If a photon is an em wave, how em wave knock out electron in...
Separate names with a comma.