"...look into all things with a searching eye” - Baha'u'llah (Prophet Founder of the Baha'i Faith)


Jun 9, 2013

Fluorescence light

Under certain conditions, atoms take in an invisible form of energy, and give it out as visible light. This is fluorescence. A fluorescence light is a glass tube filled with mercury vapor. When electricity flows through the gas, the mercury atoms take up the electrical energy and give it out as invisible ultra-violet rays. These rays hit a phosphor coating inside the tube. The phosphor atoms convert it to white light. (World of Science)