The document summarizes visible light. It begins with an introduction and table of contents. It then discusses the definition of visible light, its frequency and wavelength range, inventors Roger Bacon and Isaac Newton, origin in heated objects, and applications in daily life such as scanners, copy machines, and rearview mirrors. It concludes that visible light is the part of the electromagnetic spectrum visible to humans between 400-780 nm wavelengths. It is used in various technologies and was discovered by notable scientists.