when foton enter the water, its velocity is reduced to be 225 km/second. if an electron enter the water, would it do so? what about its proper mass?
2006-12-28 17:51:12 · 2 answers · asked by dante 1 in Science & Mathematics ➔ Physics
Yes, the electron will radiate energy, and the speed of the electron will be less than the speed of light in the water.
Yes, relativity is true in a medium. However "c" changes in a medium.
The proper mass of the electron is frame independent. I think the total mass of the electron can be calculated by using gamma=1/sqrt(1-beta^2) where beta=v/u and u is the speed of light in water.
2006-12-28 18:18:14 · answer #1 · answered by njf13 2 · 0⤊ 0⤋
Yes. The relativity theory can be used other environment.
when photon enter the water the index of refraction = 300 000km/sec / 225 000 km/sec = 12 / 9 = 4 / 3 ......
.It would do so.
.
2006-12-28 18:14:41 · answer #2 · answered by Anonymous · 0⤊ 0⤋