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#6271 |
legend
Join Date: Oct 2006
Location: Independence, MO
Casino cash: $-3337903
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The James Webb Space Telescope[3] will have 18 hexagonal beryllium sections for its mirrors.
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Posts: 28,544
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#6272 |
legend
Join Date: Oct 2006
Location: Independence, MO
Casino cash: $-3337903
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Because JWST will face a temperature of −240 degrees Celsius (30 kelvins), the mirror is made of beryllium, a material capable of handling extreme cold better than glass.
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Posts: 28,544
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#6273 |
legend
Join Date: Oct 2006
Location: Independence, MO
Casino cash: $-3337903
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Beryllium contracts and deforms less than glass — and thus remains more uniform — in such temperatures.
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Posts: 28,544
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#6274 |
legend
Join Date: Oct 2006
Location: Independence, MO
Casino cash: $-3337903
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Beryllium is also used in the Joint European Torus fusion research facility, to condition the plasma facing components.[4]
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Posts: 28,544
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#6275 |
legend
Join Date: Oct 2006
Location: Independence, MO
Casino cash: $-3337903
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Beryllium has also been used in tweeter construction by the company Focal-JMlab on its flagship Utopia Be series as an alternative to titanium and aluminium, largely due to its lower density and greater rigidity.[5]
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Posts: 28,544
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#6276 |
legend
Join Date: Oct 2006
Location: Independence, MO
Casino cash: $-3337903
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From this sweet salt,
I will make you emeralds and aquamarine. From this pale metal, I will forge you glass that will not melt. Let me take this sweet bivalent and make of it an instrument that spins to tell us where we are. Let me form a cord of it to run between your lips and mine, so we can talk to one another faster than sound has ever traveled before. |
Posts: 28,544
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#6277 |
legend
Join Date: Oct 2006
Location: Independence, MO
Casino cash: $-3337903
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I got an atomic number of 4
And I am quite a bore I’m not very fast But I sure can scratch glass |
Posts: 28,544
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#6278 |
legend
Join Date: Oct 2006
Location: Independence, MO
Casino cash: $-3337903
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I am from the Greek
And once referred to as sweet I am very light-weight So please, don’t use me as a paper weight |
Posts: 28,544
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#6279 |
legend
Join Date: Oct 2006
Location: Independence, MO
Casino cash: $-3337903
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Name: Beryllium
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Posts: 28,544
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#6280 |
legend
Join Date: Oct 2006
Location: Independence, MO
Casino cash: $-3337903
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Symbol: Be
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Posts: 28,544
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#6281 |
legend
Join Date: Oct 2006
Location: Independence, MO
Casino cash: $-3337903
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Atomic Number: 4
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Posts: 28,544
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#6282 |
legend
Join Date: Oct 2006
Location: Independence, MO
Casino cash: $-3337903
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Atomic Weight: 9.012182
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Posts: 28,544
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#6283 |
legend
Join Date: Oct 2006
Location: Independence, MO
Casino cash: $-3337903
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Family: Alkaline Earth Metals
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Posts: 28,544
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#6284 |
legend
Join Date: Oct 2006
Location: Independence, MO
Casino cash: $-3337903
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CAS RN: 7440-41-7
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Posts: 28,544
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#6285 |
legend
Join Date: Oct 2006
Location: Independence, MO
Casino cash: $-3337903
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Description: Strong, hard, gray-white metal. Lightest rigid metal. Formerly called glucinium (Gl).
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Posts: 28,544
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