Light is a kind of energy or external cause, which enters the eye and gives rise to the feeling of vision. [1] We do not see the light, but see the illuminated object. Light is a kind of diffused energy. It is a kind of wave. Light travels from one place to another in the form of oblique electromagnetic waves. The speed of light varies with the medium. The speed of light is disproportionate to the density of the medium. The speed of light through zero is the highest, the speed of light is not infinite. The speed of light in space is 29,98,92,454 meters per second or 1,6,000 miles. It is not possible to touch the speed of light in any way. There is no relative speed of light. The speed of light is always equal. Visible light is basically just a small part of the electromagnetic spectrum. Which we see in the rainbow. There is reflection, refraction, refraction, distortion of light. Surprisingly, particle religion and wave religion exist at the same time.