Karlos wrote:
@Dandy
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I think you are thinking of Helium. Hydrogen's melting point is at 14K and the solid phase is well characterised.
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No, no - I was thinking of hydrogen.
I thought I was taught that the boiling point of hydrogen is at 0 K.
But now that I read about hydrogen at wicki, I was rather astonished to read that the boiling point was not at 0 K, but at 20,4 K (= -252,8 °C) and that there even is a melting point at 14,025 K (-259,125 °C).
Hmmmmm - eigther I mixed it up after all those years or my teachers tought me BS...
But nevertheless:
(Quote from wicki)
"Many Experiments are continuing in the production of metallic hydrogen in laboratory conditions. Arthur Ruoff and Chandrabhas Narayana from Cornell University in 1998, and later Paul Loubeyre and René LeToullec from Commissariat à l'Énergie Atomique, France in 2002, have shown that at pressures close to those at the center of the Earth (3.2 to 3.4 million atmospheres), and temperatures of 100 K–300 K, hydrogen is still not an alkali metal.
The quest to see metallic hydrogen in the laboratory continues, well beyond 70 years after its existence was predicted."
So I assume that all this talk about metallic hydrogen is just theoretical/hypothtical?
Karlos wrote:
Crazy stuff.
Indeed...
Karlos wrote:
Going back to hydrogen, under enough pressure and temperature it becomes metallic, and may even be superconducting.
Yes, in theorie - as I understood it, up to now no one successfully produced metallic hydrogene...
