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From:
Dare Design <[log in to unmask]>
Reply To:
Informal Science Education Network <[log in to unmask]>
Date:
Wed, 23 Nov 2005 20:20:52 -1000
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ISEN-ASTC-L is a service of the Association of Science-Technology Centers
Incorporated, a worldwide network of science museums and related institutions.
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Though we've used metal halide (MH) lamps – and have a
very favorable opinion of them for specific uses –
we've never used them in track fixtures. I'll be
interested to hear other people's experiences.

MH bulbs are efficient and they're dimmable.
Is it really true that 70W PAR30 lamps (e.g.)
can't be dimmed?

Richard

On Nov 23, 2005, at 10:32 AM, chuck howarth wrote:
Does anyone have experience with metal halide track fixtures in exhibit 
galleries?  The metal halides are said to be "green"  because they use 
a lot less energy than conventional incandescent fixtures, but they are 
not dimmable, which means the only way to change light levels is to 
relamp the gallery.  Have any of you guys got opinions positive or 
negative about thhis issue?  Thanks for the advice,
Chuck Howarth/Gyroscope
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Dare Design
45-1112 Haleloke Place
Kaneohe, HI 96744
(808) 235-9585
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