1)A light beam traveling through water strikes an unknown substance at a 50° angle. The angle of refraction is measured to be 33.4°. A) What is the index of refraction for the unknown substance? B) What is the speed of light through the in the unknown substance? C)lf the beam of light has a wavelength of 550nm before it entered the water. What would the wavelength be in water? And in the unknown substance?

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Proper Length

The theory of special relativity explains the connection between space and time to objects that move in a straight line at a constant speed. The objects move at the speed of light. When an object approaches light speed, its mass is endless and cannot move faster than light. The most crucial postulate of Einstein's special relativity is that the laws of nature do not change in each frame of reference.