Lights

On Tue, 15 Nov 2005 02:55:58 +0100, woodelf <bfranchuk at jetnet.ab.ca> wrote: ... Cheap, low-grade fluorescent tubes are green. They are quite unnatural, but give the highest light output for a given electrical input. I can see it every morning from the windows of the main post office in Oslo. The room where mail is sorted by robots and humans rarely go is lit by that kind of tubes. It is very different from the other floors in the same building, and does not look too nice to me. People who need to evaluate colours often use neodym/praseodym (a.k.a. didymium) lightbulbs. They have pinkish bulbs, and give a light which is very daylight-like even at modest power. I got some which were made in Finland (by Airam if I recall right). They seem to be rare and hard to get. As for screw-in fluorecents, they come in at least three different colour grades. The most natural-looking are of course also the most expensive. -- Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/