microwave refractometer

microwave refractometer

[′mī·krə‚wāv ‚rē‚frak′täm·əd·ər]
(electromagnetism)
An instrument that measures the index of refraction of the atmosphere by measuring the travel time of microwave signals through each of two precision microwave transmission cavities, one of which is hermetically sealed to serve as a reference.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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