Mercury Vapor Temperature
Posted 21 September 2007 - 08:30 PM
Posted 21 September 2007 - 09:14 PM
Posted 22 September 2007 - 12:33 AM
And David's right; they're basically the same color as cool white fluorescents (blue + green), but at varying color densities depending on the type of light. In practice you still have to test different gel combinations to find the right color match. A digital still camera or color temperature meter helps with this.
Posted 22 September 2007 - 10:33 AM
All these things are HID variants and all use mercury (or sodium) but the ones called "mercury vapor" (and sodium vapor) are a monochromatic light that's not terribly usable for serious lighting unless you absolutely have to. The difference between a "metal halide" and a "mercury vapor" is that the metal halide has some additional iodine salts of other metals that the mercury vapor doesn't have. Even HMI is a member of the metal halide family and it too has mercury vapor in it along with a very high quality of metal iodine salts.
Edited by Richard Andrewski, 22 September 2007 - 10:35 AM.