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oblongata | 14:12 Wed 19th Nov 2008 | Crosswords
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What device is used to measure time using excited pyramid shaped molecules of hydrogen and nitrogen.

Tks

Obo
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Avatar Image beermagnet
An Ammonia (NH3) molecule is a pyramid shape, and there is an atomic clock based on the vibrationally excited energy levels of ammonia called an
Ammonia Clock
So I think that's the "device" you're after.
16:42 Wed 19th Nov 2008
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Sounds good to me

many thanks

Obo
16:57 Wed 19th Nov 2008

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