High Quality Content by WIKIPEDIA articles! Solid hydrogen is the solid state of the element hydrogen, achieved by decreasing the temperature below hydrogen's melting point of 14.01 K (?259.14 °C). It was collected for the first time by James Dewar in 1899 and published with the title "Sur la solidification de l'hydrogene" in the Annales de Chimie et de Physique, 7th series, vol.18, Oct. 1899. Solid is one of the major states of matter. It is characterized by structural rigidity and resistance to changes of shape or volume. Unlike a liquid, a solid object does not flow to take on the shape of its container, nor does it expand to fill the entire volume available to it like a gas does. The atoms in a solid are tightly bound to each other, either in a regular geometric lattice (crystalline solids, which include metals and ordinary water ice) or irregularly (an amorphous solid such as common window glass).

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