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Tests and Comparisons of Carbon and Germanium Thermometers

机译:碳锗温度计的测试和比较

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摘要

Two encapsulated germanium thermometers have been calibrated and tested between 1.4° and 4.2°K. Within the precision of the measurements (±0.4 millidegree) no change in their calibration was found after cycling to room temperature or after temporary removal from the measuring apparatus. In this respect, the germanium thermometers were considerably better than carbon thermometers. For comparison a carbon thermometer was encapsulated and found to undergo unpredictable changes corresponding to several millidegrees under similar circumstances.
机译:两个封装的锗温度计已在1.4°至4.2°K之间进行了校准和测试。在测量精度范围内(±0.4毫米),在循环至室温后或从测量设备中临时移开后,其校准无变化。在这方面,锗温度计比碳温度计好得多。为了进行比较,将碳温度计封装起来,发现在相似的情况下会发生不可预测的变化,相当于几毫米。

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