home

light is made up of small particles of dust flying past you at an high speed and also reflection.
**Light** is [|electromagnetic radiation] of a [|wavelength] that is [|visible] to the [|human eye] (in a range from about 380 or 400 [|nanometers’] to about 760 or 780 nm). [|[1]] In [|physics], the term //light// sometimes refers to electromagnetic radiation of any wavelength, whether visible or not. Four primary properties of light are [|intensity], [|frequency] or [|wavelength] , [|polarization] , and [|phase]