- #1
jartsa
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- 138
Let's say 1 Kilogram of matter is converted into light, and all this light is reflected into one direction.
What is the momentum of the light? Mass of 1 kg times velocity c ?
Let's say the same light enters a piece of glass where the speed of light is 1/2 c. What is the momentum of the light now? 1 kg times 1/2 c ? And did the piece of glass absorb half of the momentum?
Let's say the light enters a gravity field where the gravitational time dilation factor is 1/2. Does the light give half of its momentum to the gravitating thing, similarly as light perhaps gave half of its momentum to the piece of glass?
What is the momentum of the light? Mass of 1 kg times velocity c ?
Let's say the same light enters a piece of glass where the speed of light is 1/2 c. What is the momentum of the light now? 1 kg times 1/2 c ? And did the piece of glass absorb half of the momentum?
Let's say the light enters a gravity field where the gravitational time dilation factor is 1/2. Does the light give half of its momentum to the gravitating thing, similarly as light perhaps gave half of its momentum to the piece of glass?