They're your eyes, and they receive signals that fall in the range of visible light ... There's lots to discover in the electromagnetic spectrum. Here's a tour that begins with radio waves ...

Where does black fall on the color spectrum? – Utsav, age 17, Navi Mumbai, Maharashtra, India People love the rainbow of ...

A rainbow contains all the colours of the visible spectrum. It is often possible to see a secondary bow, which is slightly larger and fainter than the first – and the colours are in the opposite ...

This is the most likely reason that earlier searches for extraterrestrial intelligence were conducted in the radio portion of the light spectrum instead of the visible portion of the light spectrum.

Kemula, W., and Sioda, R., Bull. Acad. Polon. Sci., (Serie Chimique) (in the press). Paul, D. E., Lipkin, D., and Weissman, S. I., J. Amer. Chem. Soc., 78, 119 (1956).

As the U.S. continues to wait for newer sunscreen ingredients, patients should use tinted sunscreens to protect against ...