All white on the night

1999-04-01T00:00:00

Metal halide lamps have been around in one form or another for the last 30 years or so. A follow-up to the basic mercury vapour lamp, metal halides found favour because they were potentially twice as efficient as the mercury product, and up to four times more efficient than tungsten ...

This is premium content.

Only logged in subscribers have access to it.

Login or SUBSCRIBE to view this story

Existing subscriber? LOGIN

A subscription to Building Design will provide:

Unlimited architecture news from around the UK
Reviews of the latest buildings from all corners of the world
Full access to all our online archives
PLUS you will receive a digital copy of WA100 worth over £45.

Subscribe now for unlimited access.

Subscribe today

Alternatively REGISTER for free access on selected stories and sign up for email alerts