[time-nuts] beryllium oxide
brooke at pacific.net
Fri Jan 16 16:51:19 EST 2009
Thanks for the MDA Technology link. I didn't know that Beryllium was used to
make mirrors and their metering structures for space apps. It sure sounds like
the best material for that use. I'd bet that's how spy sat mirrors are made.
Bruce Griffiths wrote:
> Bruce Griffiths wrote:
>> Poul-Henning Kamp wrote:
>>> In message <4970E72D.1050300 at rubidium.dyndns.org>, Magnus Danielson writes:
>>>> I have encountered Beryllium in a field none of you mentioned, as
>>>> material for speaker cones. Light and very rigid. Perfect for the top
>>>> driver for horns. I recall something about high speed of sound.
>>> It is also used for mirrors for certain, usually classified,
>> One unclassified application is the 1.12m diameter secondary mirrors of
>> ESO's 4 VLT telescopes in Chile.
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> For additional applications in some classified and unclassified programs:
> An application for breyllium mirrors at CERN:
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