Gas thermometer
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A gas thermometer measures temperature by the variation in volume or pressure of a gas.[1] One common apparatus is a constant volume thermometer. It consists of a bulb connected by a capillary tube to a manometer. The bulb is filled with a gas such that the volume of the gas in the bulb remains constant. The volume is related to temperature by k, known as Charles's Law . The pressure of the gas in the bulb can be obtained by measuring the level difference in the two arms of the manometer.[2] Gas thermometers are often used to calibrate other thermometers.[3]
[edit] History
Further information: Timeline of temperature and pressure measurement technology
[edit] See also
[edit] References
- ^ "AMS Glossary (gas thermometer)". http://amsglossary.allenpress.com/glossary/search?id=gas-thermometer1.
- ^ "Experiment 1 - The constant volume gas thermometer". http://polaris.phys.ualberta.ca/info/Phys29x/Manual/1CVT01.pdf.
- ^ "International Temp Stds". http://www.electro-optical.com/unitconv/tempref/its90.html.
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