Ultraviolet photography Silicon (from which DSLR sensors are made) can respond to wavelengths between 1100-190 nm. Photography based on visible fluorescence induced by UV radiation uses the same ultraviolet illumination as in reflected UV photography. However, the glass barrier filter used on the lens must now absorb or block all ultraviolet and infrared light and must permit only the "visible" radiation to pass. Visible fluorescence is produced in a suitable subject when the shorter, higher energy ultraviolet wavelengths are absorbed, lose some energy and are emitted as longer, lower energy visible wavelengths. UV induced visible fluorescence photography must take place in a
The Invisible Man (1975 TV series) effect of his work is the ability to turn objects invisible, and tries to find medical applications for his invention. He discovers that objects that are made invisible reappear after a few hours, and on living test animals the collars they wear re-appear before the living cells themselves. Obsessed by his invention, Westin decides to become invisible himself, in part to prove that a human can survive the process, and also to test a serum he has developed to reverse the invisibility. He reveals the process to his boss, Walter Carlson (Jackie Cooper), who is initially unimpressed by what he