Origin : The name is derived from the Greek ‘selene’, meaning moon.
Description :
Selenium can exist in two forms, as a silvery metal or as a red powder, and is used in photoelectric cells, photocopiers, solar cells and semiconductors. It is essential for some species, including humans, and our bodies contain about 14 milligrams.
Image :
Lunar surface. Click here to see larger version of this image.
