Tag Archive for 'Metallic hydrogen'

Trachenko et al. show that a combination of two dimensionless fundamental constants results in a new dimensionless constant that provides the upper bound for the speed of sound in condensed phases. Image credit: Gerd Altmann.

Physicists Find Upper Limit for Speed of Sound in Solids and Liquids

Oct 14, 2020 by News Staff

Using two dimensionless fundamental constants, an international team of physicists has calculated the fastest possible speed of sound in condensed phases...

Photo of metallic hydrogen at a pressure of 495 GPa; the sample is non-transmitting and is observed in reflected light; the central region is clearly more reflective than the surrounding metallic rhenium gasket; the sample dimensions are approximately 8-10 microns with thickness 1.2 microns. Image credit: Ranga P. Dias & Isaac F. Silvera, doi: 10.1126/science.aal1579.

Physicists Produce World’s First Sample of Metallic Hydrogen

Jan 30, 2017 by News Staff

A duo of physicists at Harvard University has succeeded in creating a metallic modification of hydrogen. The research is published in the journal Science. Photo...