What Mr Fro means is since he has a two wavelength nearly monochromatic source in a reflector focused at infinity, thus he can see schlieren fringes at a distance from refractive index changes, I've seen them with some bright led sources.
There are 36 watt and 70 watt and 175 MH sources that are very nice interior lighting, for retail and home. Venture Lighting in nearby Solon has sold a nice houselamp fixture with a rapid start, HF ballasted MH with no flicker, just to prove it could be done
I'd be happier with leds if, 1 they were more full spectrum, 2. people would design better fixtures for them. Without the red and green present, reaction time is down by 33% or more.
If I were doing my dream house, main lighting would be MH, supplimental lighting would be led, and there would be tungsten for just in case. Of course the plumbing would be Swagelok, so I'd never have to sweat solder a pipe for the rest of my life. But I'm a geek.
Steve
Last edited by mixedgas; 07-02-2009 at 10:03.
Qui habet Christos, habet Vitam!
I should have rented the space under my name for advertising.
When I still could have...