Round 1100: Tossup 8

Measurements of this quantity are interpolated using 9-, 12-, and 15-degree polynomials in a calibration standard defined by 14 fixed points. This quantity is determined precisely from a platinum wire enclosed in a quartz or ceramic sheath calibrated to the ITS-90 standard. A mixture of chromel and constantan is used to determine this quantity using electrical resistivity. (-5[1])This quantity is inferred from the curvature of a bimetallic strip. In 2019, the SI unit for this quantity was redefined in terms of Boltzmann’s constant. The spectrum of blackbody emission depends only on this quantity. (10[1]-5[1])The zeroth law of thermodynamics provides the theoretical justification for devices that measure this quantity consisting (10[1])of (10[1])ethanol in a glass bulb. For 10 points, name this quantity measured in kelvins. (10[4])■END■

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