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how to find the speed of light in substance. The basic concept behind both events involves the speed of light and all other forms of electromagnetic radiation which scientists have thoroughly examined and is now expressed as a constant value denoted in equations by the symbol cNot truly a constant but rather the maximum speed in a vacuum the speed of light which is almost 300000 kilometers per second can be manipulated by. V in this equation is the speed of light in a medium having an index n and c represents the speed of light in vacuum.
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For critical angle we will use snells lawC is critical angle and C 45onmedium sinC nair sin90 nair 1sinC S inC 1 sin451 nmedium 141we know that refractive index n speedof lightinmediumspeedof lightinvacuum where c 3108ms1414 vc v 14143108 v 212108ms. C 299792458 x 10 8 ms. V lead c n lead 299792458 x 10 8 ms 26 12 x 10 8 ms 26 x 10 8 miles per hour Even slowed by lead light travels at a speed of 260 million miles per hour.
Over 300 years researchers have made measurements of c and refined it to the point that now the SI unit of distance the meter is based on it.
C 299792458 x 10 8 ms. 299792458 meters per second 186282 miles per seconda speed. C 299792458 x 10 8 ms. The basic concept behind both events involves the speed of light and all other forms of electromagnetic radiation which scientists have thoroughly examined and is now expressed as a constant value denoted in equations by the symbol cNot truly a constant but rather the maximum speed in a vacuum the speed of light which is almost 300000 kilometers per second can be manipulated by.
