[time-nuts] beryllium oxide

[Bruce Griffiths]

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,
>> applications.
>>
>>   
>>     
> One unclassified application is the 1.12m diameter secondary mirrors of
> ESO's 4 VLT telescopes in Chile.
>
>
> Bruce
>
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>   
For additional applications in some classified and unclassified programs:

http://www.mdatechnology.net/techprofile.aspx?id=175

An application for breyllium mirrors at  CERN:
http://cdsweb.cern.ch/record/944244?ln=no

Bruce