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What type of light travels the fastest?

Updated: 8/10/2023
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13y ago

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In a vacuum all wavelengths of light travel at the same speed, c. In other mediums the speed of light is dependent on the refractive index of that material; v=c/n where v is the speed through the medium and n is the refractive index. The refractive index if different for different materials and can have fairly complex dependence on the wavelength of light. The fastest type of light is therefore dependent on the medium through which it is travelling.

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13y ago
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14y ago

they all travel at the same speeds, but in a vacuum, they are at their fastest

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10y ago

Light travels fastest through a vacuum. Traveling through air, glass, or any other material slows it down.
Free space

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13y ago

Trick question. All light travels at the same speed.

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13y ago

There's only one kind of light, and whatever its wavelength (frequency) may be,

it always has the same speed.

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10y ago

In a vacuum.

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12y ago

outer space

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