Does a Photon Carry Velocity of Its Source?

In summary, the conversation discusses the movement of Earth in space and its effect on objects thrown or fired upwards. It is noted that while a ball falls back down due to Earth's momentum, the velocity of a photon remains independent of Earth's movement. However, other factors such as direction, wavelength, frequency, energy, and momentum are influenced by the source. It is also mentioned that light follows the conservation of momentum like all other objects.
  • #1
vincent
6
1
Earth is moving through space. If I throw a ball straight up, it falls down to me and is not left behind. This is obviously because it already carries the momentum of Earth's movement. But if I fire a photon straight up, does it also carry a velocity component in direction of Earth's movement?
If not, then it must be free of all the velocity components like movement of solar system through galaxy etc.
 
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  • #2
Of course. Light must respect the conservation of momentum just like everything else does.
 
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  • #3
It is just it’s speed that is independent of the source. It’s direction, wavelength, frequency, energy and momentum all depend on the source.
 
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Related to Does a Photon Carry Velocity of Its Source?

What is the velocity of a photon?

The velocity of a photon is a constant value of approximately 3x10^8 meters per second, which is the speed of light in a vacuum.

Does a photon carry the velocity of its source?

No, a photon does not carry the velocity of its source. The velocity of a photon is independent of the velocity of its source.

What factors affect the velocity of a photon?

The velocity of a photon is only affected by the medium through which it is traveling. In a vacuum, the velocity is constant, but it can be slowed down when passing through a medium such as water or glass.

How is the velocity of a photon related to its energy?

The velocity of a photon is directly proportional to its energy. This means that photons with higher energies, such as gamma rays, travel at a faster velocity than photons with lower energies, such as radio waves.

Is the velocity of a photon always the same?

Yes, the velocity of a photon is always the same in a vacuum. This is one of the fundamental principles of Einstein's theory of relativity.

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