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Don Klipstein
 
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Default Metal Halide Arc bulbs for home? Crazy?

In article , John Hines wrote:
(Don Klipstein) wrote:

In article , Ignoramus4324 wrote:

The questions are, essentially, are they suitable for garage
lighting. Do they emit harmful UV and is their light pleasant for
eyes.


I like them.

UV content is less than that in a similar amount of daylight. Just
don't use them if the outer bulb gets broken - the bulb blocks nasty
shortwave UV and UVB that the arc makes a little bit of.


MH bulbs give off a lot more UV when the are warming up, I've seen
warnings not to look directly at the bulb when it is warming up.

Given that until it lights up, there isn't anything but an arc inside,
this seems quite wise advice.


MH bulbs have UV output maximized when they are most of the way warmed
up, just as they are beginning to shift from mercury color to metal halide
color. UV content is roughly equal to that in an amount of
window-filtered sunlight equal to the fully-warmed-up output of the metal
halide.

- Don Klipstein )