The Thermal Expansion of Crystalline Sodium Between 80°K and 290°K

Abstract

The observed linear thermal expansion of crystalline sodium is tabulated at ten degree intervals between 80\ifmmode^\circ\else\textdegree\fi{}K and 290\ifmmode^\circ\else\textdegree\fi{}K. The behavior of this material is in accord with the relation obtained by Gruneisen between thermal expansion and heat content, within the precision measure of the latter quantity. A description of the thermal expansion and cryostatic apparatus is given.