Protective filters can serve other purposes too. Some are simply clear pieces of glass that have no other function, but you can also get a UV filter, which is designed to block out unwanted ...

A Hubble Space Telescope image captures Jupiter in ultraviolet light, highlighting the Great Red Spot as a darker feature due to high-altitude haze particles absorbing UV light.

This site displays a prototype of a “Web 2.0” version of the daily Federal Register. It is not an official legal edition of the Federal Register, and does not replace the official print version or the ...

Infrared radiation displayed as having a range from 725 nanometres to beyond 825 nanometres. Ultraviolet radiation is invisible energy in the wavelength range from 100 to 400 nanometers (nm). A ...