Wikipedia:Picture of the day/October 1, 2005

Picture of the day
	The central electrode of a Plasma lamp, showing a glowing blue plasma streaming upwards. The colors are a result of the radiative recombination of electrons and ions and the relaxation of electrons in excited states back to lower energy states. These processes emit light in a spectrum characteristic of the gas being excited. Photo credit: PiccoloNamek Archive - Nominate new image