DARPA’s CMUVT and LUSTER provided Ultraviolet Thrust for Chemical & Biological Warfare, Missile warning, Atomic Clocks and Communications

Among all the electromagnetic waves in the universe, the most relevant to us are those in the visible spectrum. It is the radiation at these wavelengths that enables us to see our surroundings and live, by breathing in oxygen generated by photosynthesis. Ultraviolet (UV) is electromagnetic radiation with a wavelength from 10 nm to 400 nm, shorter than that of visible light but longer than X-rays. Ultraviolet rays are invisible to all humans, although insects, birds, and some mammals can see near-UV.