Hey, I use Neodymium Light bulbs for my chams. Walmart sells them for about 4-5 dollars and I believe they are 60 watt.
What is a Neodymium Light Bulb?
A neodymium light bulb is an ordinary incandescent light bulb, except that the bulb is made of a special purple glass known as neodymium glass. Basically, it is standard light bulb glass that is "imbued" with the mineral Neodymium. Unlike other light blue filter materials that slightly attenuate a broad range of the spectrum from green through red, neodymium glass has a narrow absorption band in the yellow and yellow-orange. A neodymiub bulb glows with a whiter color like that of some halogen lamps.
The special effect of the neodymium glass filtering is to achieve more red and green output than usual for a light source of a given brightness and overall color. This causes red and green objects to look slightly brighter and more intensely colored than usual. The "triphosphor" type fluorescent lamps, including most compact fluorescent lamps, have a similar effect except that the fluorescents make bright pure reds look slightly orangish.
Neodymium bulbs are dimmer than unfiltered incandescent bulbs of the same wattage and life expectancy. Neodymium bulbs do not have increased output at any wavelength, except for an infrared band around 1064 nM where neodymium glass fluoresces. Basically its easier on their eyes versus just a plain incandescent bulb. Its simulates natural sunlight as far as uva is concerned.
Anyone else use these?