The speed of light changes depending on the compression value of the space the light is traveling in. The speed of light is measured by a photon traveling through space. A photon traveling a specific distance, without regard to the value of space, can be used to measure the speed of light. The speed of light changes as it travels from one gravitational field to another. The speed of light changes as it travels from the Sun to the Earth. Light travels at a different speed for each different gravitational field it is traveling in. Take two identical photons, photon A and photon B. Place photon A in a low gravitational field where the value of space is equal to one. Place photon B in a high gravitational field where the value of space is equal to three. Release both photons at the same time. Photon A travels through three dimensionless points of space with a value of one. Photon B travels through one dimensionless point of space with a value of three. Each photon travels through equal space in equal time. Photon A has traveled farther, measuring length, than photon B. Photon A has traveled that length in the same amount of time that photon B traveled the length it traveled. Photon A has traveled faster than photon B. Light travels faster in a low gravitational field and slower in a high gravitational field.
The Speed of Light
Blue and green: Earth
Yellow top: photon A
Yellow bottom: photon B
Blue: compression
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