[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [APD] Lighting a nano with a 5300K halogen -- or - Colin it like it is
Just in case anyone missed the point, *any* bulb the uses
electricity through a filament as the light source, is a
very efficient heater but a terrbily horribly awfully
really no good very inefficient method of illumination --
about 95% or more of the input energy is given off as heat!
Bulbs that use an arc of electricity (fluorescents and HID
or metal metal halides, etc.) only give off abut 60%-to
70-% of their input energy as heat. A really tremendous
gigantic superior very efficient method of illumination.
There are even some arc bulbs that give off only about 20%
of their input energy as heat but they cost a small fortune
and the light emitted is in such a narrow tiny eeky
yellowish part of the spectrum, that they suck even in
parking lot lamps.
--- Bill Wichers <billw at waveform_net> wrote:
> . . . HALOGEN lights ARE NOT METAL
> HALIDE (MH)
> lights. Much emphasis there with all those caps...
Plant your feet in the nation's capital and learn the art of aquascaping Senske style.
The Annual AGA Convention, November 12-14, 2004.
Registration *and* Banquet only $98 until October 28.
Convention Details/Registration at aquatic-gardeners.org & gwapa.org
Aquatic-Plants mailing list
Aquatic-Plants at actwin_com