What is Light ? What is Light ?
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Light or visible light is electromagnetic radiation within the portion of the electromagnetic spectrum that can be perceived by the human eye. Visible light is usually defined as having wavelengths in the range of 400–700 nm, or 4.00 × 10⁻⁷ to 7.00 × 10⁻⁷ m, between the infrared and the ultraviolet.
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Light is a form of energy which produces the sensation of sight. it helps to see the things but light cannot be seen. it travels in a straight line path.
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