Solid Hydrogen Video - 3/23/99: Particle Formation Experiments : 13:37:38 Solid molecular hydrogen particles (H2 matrix) formed on the surface of the liquid helium (shown in the circle) Liquid helium at 4 K temperature Solid hydrogen has been on the helium surface for 1 minute Several particles have already agglomerated in this photo Bright area is light reflected off the Helium surface