# How Does Altitude Affect the Frequency of a 1GHz Signal from a Satellite?

• kingyof2thejring
In summary, to find the frequency shift of a 1GHz signal broadcast from a satellite in orbit at an altitude of 35600km to the Earth's surface, we can use the equation f(observed) = f(emitted){1 +/- gh/c^2}, where g=Gm/r^2 and r is the distance between the satellite and the Earth's surface. By substituting the given radius and mass of the Earth, we can calculate g and then use it to find f(observed). This can be done by first finding the wavelength of the photon using the equation w = c / f and then substituting it into the equation for f(observed).
kingyof2thejring

## Homework Statement

sky tv is broadcast from a satellite in orbit at an altitude of 35600km. By considering the defference between the satellite and the surface of the Earth , find the frequency shift of a 1GHz signal broadcast to the earth.
(i have been given radius and mass of the earth.

## Homework Equations

g=Gm/r^2, f(observed)=f(emit){1 +/- gh/c^2}

## The Attempt at a Solution

find g
f(emitted)=1GHz
how do i calculate f(observed)?

(G*M) / (r * c^2) = (wo - we) / we

"wo" is the wavelength of the photon as measured by a distant observer.
"we" is the wavelength of the photon when measured at the source of emission.
and "r" is distance

w = c / f (c=speed of light)----------------
Pooya Afaghi

## 1. What is the Gravitational Frequency Effect?

The Gravitational Frequency Effect is a phenomenon where the frequency of a wave is affected by the presence of a gravitational field. This means that the frequency of a wave will change as it travels through a region with a different gravitational pull.

## 2. How does the Gravitational Frequency Effect occur?

The Gravitational Frequency Effect occurs due to the curvature of space-time caused by the presence of massive objects, such as planets or stars. This curvature can cause a change in the frequency of a wave as it travels through the gravitational field.

## 3. Does the Gravitational Frequency Effect impact all types of waves?

Yes, the Gravitational Frequency Effect can impact all types of waves, including light waves, sound waves, and gravitational waves. However, it is most commonly observed in the frequency of electromagnetic waves.

## 4. Is the Gravitational Frequency Effect significant in everyday life?

The Gravitational Frequency Effect is a very small effect and is usually only noticeable in extreme gravitational fields, such as those near black holes. It is not significant in everyday life, but it is important to understand in fields such as astrophysics and cosmology.

## 5. How is the Gravitational Frequency Effect measured?

The Gravitational Frequency Effect is measured using precise instruments, such as lasers, to detect small changes in the frequency of waves as they pass through a gravitational field. This can provide valuable information about the mass and gravitational pull of objects in the universe.

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