Orthobaric Densities of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">He</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>1.3°K to 3.2°K

Saturated liquid and vapor densities of ${\mathrm{He}}^{3}$ have been measured by a direct method in the temperature range of 1.3\ifmmode^\circ\else\textdegree\fi{}K to 3.2\ifmmode^\circ\else\textdegree\fi{}K. The experimental data are represented by an empirical equation to probable errors of 0.1 percent for the liquid phase and of 1.3 percent for the vapor phase.

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