Difference between revisions of "Knudsen Gage"
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Knudsen Gage
</dt>
A gage which measures pressure in terms of the net rate of transfer of momentum by molecules
between two surface maintained at different temperatures and separated by a
distance smaller than the mean free
path of the gas molecules. Also called radiometer vacuum gage.
</dd>
Various types of Knudsen gage are distinguished by the names of the
inventors and differ mainly in the shape and method of suspension of the
movable element.
</dd>
References
This article is based on NASA's Dictionary of Technical Terms for Aerospace Use
