A signal of 800 nm is transmitted to a satellite orbiting Earth at 190 km. Calculate the shift in wavelength caused by Earth's gravity.
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- When light is moving away from a gravitational source its energy will decrease. The wavelength will shift to a longer value and is called redshift.
- The change in wavelength due to the gravity of Earth is given by,
Here g is the acceleration due to gravity, H is height, and c is the speed of light.
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