Question

what is light?
free ....​

Answer 1

Answer:

Light electromagnetic radiation that can be detected by human eyes electromagnetic radiation ekavali and extremely wide range of wavelength from Gamma ray with wavelength less than about 1×10*-11 metre to Radio webmusic in metres within that broad spectrum the wavelength visible to human occupy a very narrow band from about 700 NM for red light down to about 400 nm for valid light the spectrum reason adjust to the visible band are often referred to as light as inferred at the one Indian ultraviolet and at the other the speed of light in vacuum is fundamental physical call attend the currently accept value which is extremely 299,792,458 metres per second aur about 186282 miles per second.

Answer 2

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Light, or Visible Light, commonly refers to electromagnetic radiation that can be detected by the human eye. ... Light can also be described in terms of a stream of photons, massless packets of energy, each travelling with wavelike properties at the speed of 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.[1] 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 (with longer wavelengths) and the ultraviolet (with shorter wavelengths).[2][3] This wavelength means a frequency range of roughly 430–750 terahertz (THz).