Accelerating Universe

[Bobby]

So time runs slower on surface of Earth than on surface of Moon.

 

Now, if there was a human on the Moon with a powerful telescope pointed at a perfect clock on the Earth, and there was also a human on the Earth with a powerful telescope pointed at a perfect clock on the moon. Now, assuming both the Moon and the Earth are stationary would the man on the Moon think the clock on Earth is running slow compared to his clock on the Moon, and would the human on Earth think the clock on the Moon is running fast compared to the clock on Earth?

 

The answer must be yes i guess.

 

Kizzi :shrug:

 

 

Consider that clock rates and length measurements depend on velocity. Suppose Ann is watching Betty's clocks and rulers. If Betty is moving relative to Ann then Ann would see the relativistic effects on Betty's clocks and rulers. If Ann then measures the speed of light she will get C. If Betty measures the speed of light she will also get C. Since they both get the same result using different tools (slow clock and short rulers), I would expect the same thing to happen in gravitational fields.