Creating light where there was darkness is one of the primordial functions of technology, so it's not surprising that over the years quite a wide range of substances have been brought to bare on the problem. These light bulbs are all displayed in my Bulb Stand.
Click any element below to see all the samples of that element, or click on the sample picture to go directly to the description of that sample.
Text and images Copyright (c) 2010 by Theodore W. Gray.
