99,930,8191/3meters/second
refractive index
It's the speed of light in vacuum divided by the speed of light in that medium.
At about 2/3 the speed of light in a vacuum.At about 2/3 the speed of light in a vacuum.At about 2/3 the speed of light in a vacuum.At about 2/3 the speed of light in a vacuum.
The index of refraction of a substance is(The speed of light in vacuum) divided by (the speed of light in the substance) .
c divided by the index of refraction of the medium = the speed of light in the medium.
Wavelength is speed, of light, in this case, divided by frequency. 3 x 108 meters per second divided by 6.82 x 1014 Hertz is 0.4 micrometers.
Speed of light ≈ 186,000 miles per second 186,000 ÷ 13 ≈ 14,308 miles per second
That would be the reciprocal of wavelength.( 1 ) divided by (wavelength) .
If the substance has an index of refraction of 4/3, then the speed of light in it is 3/4 (75%) of the speed of light in vacuum, or about 225,000 km/sec.
The Universe - 2007 Light Speed 3-3 is rated/received certificates of: Australia:G
The Universe - 2007 Light Speed 3-3 was released on: USA: 9 December 2008
speed of light is 3 into ten to the power 8 metres per second