- #1

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if hf`=hf(1-GM/(R*c^2)

then as the distance becomes larger, R becomes larger, so f`becomes smaller?

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- Thread starter asdf1
- Start date

- #1

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if hf`=hf(1-GM/(R*c^2)

then as the distance becomes larger, R becomes larger, so f`becomes smaller?

- #2

TD

Homework Helper

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I'm not 100% sure, but I think t hat when leaving the star, the photon has to get out of the gravitation-field of the star, therefore its kinetic energy has to decrease since the potential energy is rising.

- #3

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hmm... that makes sense, but the mathematical equation looks weird...

it seems to say otherwise~

it seems to say otherwise~

- #4

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still a little weird~

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