The index of refraction is the velocity of light in a vacuum divided by the velocity of light in medium.
22.
Einstein showed how the velocity of light in a moving medium is calculated, in the velocity-addition formula of special relativity.
23.
Moreover, the velocity that must be exceeded is the phase velocity of light rather than the group velocity of light.
24.
Moreover, the velocity that must be exceeded is the phase velocity of light rather than the group velocity of light.
25.
The index of refraction is the velocity of light in a vacuum divided by the velocity of light in medium.
26.
Amarantite is anisotropic, which means, the velocity of light varies with crystallographic direction, and there is more than one refractive index.
27.
It was created by adding " C " the velocity of light to Hubbles equation, and not put there by observation.
28.
Multiplying this age with the velocity of light gives the radius of the observable universe, and then the volume can be computed.
29.
In terms of its optical properties, nabalamprophyllite is anisotropic which means the velocity of light varies depending on direction through the mineral.
30.
In terms of its optical properties, vladimirite is anisotropic which means the velocity of light varies depending on direction through the mineral.
