Write the formula for velocity of light in a medium of relative permittivity
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Formula: V = c / where: V = velocity of object, in km/s or m/s (depending on how the speed of light is measured) c = speed of light, either 300,000 km/s or 3.0 x 108 m/s. = change in wavelength from the normal, can be measured in meters of Å
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speed of light =1/√ (u not )(e not)
where u not is permittivity of free space
and e not is permeability of space
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