Find the speed of a wave with wavelength 450 nm and frequency 45 Hz. This video shows how to calculate the speed that light will travel at in a material with a known value of refractive index. Write the formula for distance.
Accurately measure the mass of the object in kilograms.
Take your current speed in either kmph or mph. 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. V l f 450 n m 45 H z 20 250 n m s. Finally calculate the index of refraction.