| http://www.w3.org/ns/prov#value | - The paper is available on-line at no cost to non-subscribers for the next three months.???NIST invented acoustic thermometry based on metal-walled cavities that act as simultaneous acoustic and microwave resonators,??? Moldover says. ???This is the most accurate technique for determining the thermodynamic temperature and for measuring the Boltzmann constant.???
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