In everyday life we often see light travelling in a straight line, but found that the sound of the trip curve corner building because it has indirect anything. Sound is a mechanical wave, but light as electromagnetic waves. Sound is a longitudinal waves, but the sounds are transverse waves. The speed of sound in air is less than that of light. Wavelength is measured in the size as well as the size, the object, while the shorter wavelength of light is extraordinarily.
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