The slower they turn, the brighter they glow
Wednesday, November 14, 2018 - 10:20
in Physics & Chemistry
With Halloween over, ghostly decorations are now being replaced by Christmas themed ornaments, many of which glow in the dark. This glow, termed luminescence, is produced by chemical and biochemical reactions or when electrons in a material are excited to higher energy states upon exposure to light. Luminescence of the latter kind is called photoluminescence and is widely used in fluorescence microscopy and in developing different types of sensors.