metallic hydrogen


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metallic hydrogen

[mə′tal·ik ′hī·drə·jən]
(physical chemistry)
A phase of hydrogen believed to occur at extremely high pressures, in which the material transforms to a conducting molecular solid.
A phase of hydrogen believed to occur at still higher pressures, in which the molecular bonds that exist at lower pressures are broken and an atomic solid with the structure of an alkali metal is formed.
References in periodicals archive ?
There may be a solid core to Jupiter, but it is most likely buried very deep under a thick layer of (https://science.nasa.gov/science-news/science-at-nasa/2011/09aug_juno3/) liquid metallic hydrogen , a form of hydrogen that acts as an electrical conductor.
Researchers at Harvard University create metallic hydrogen which acts like a superconductor while UCL reports evidence of the oldest forms of life on Earth.
We call this substance metallic hydrogen, because the free-moving electrons make the liquid electrically conducting.
"It's the first-ever sample of metallic hydrogen on Earth, so when you're looking at it, you're looking at something that's never existed before."
Planetary magnetic fields are understood to require some degree of tilt in order to sustain currents flowing through the liquid metal deep inside the planet (in Saturns case, this is thought to be liquid metallic hydrogen).
"We do not believe that conditions exist in stars for solid metallic hydrogen to form," says Harvard University physicist Isaac Silvera.
Scientists are tantalizingly close to producing the first samples of solid metallic hydrogen using powerful lasers, electrical impulses, and other cutting edge equipment.
He added that Jupiter is the fifth planet from the sun and it is about 1,400 times larger in volume than the Earth, and its interior is made of rocks and metallic hydrogen.(end) zak.haq
Nonetheless, ample evidence exists that the Sun itself is comprised of condensed matter or, more specifically, of metallic hydrogen [15].
Further down, deep in the murky depths this gets 'squashed' by the extensive pressures into a very peculiar material known as metallic hydrogen. This gives rise to Saturn's appreciable magnetic field.
They're all fluids, so the rain is really droplets of fluid helium mixed with neon falling through a fluid of metallic hydrogen.
Why is Earth's core made of nickel and iron and Jupiter's of metallic hydrogen?