Interferometer

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Interferometer

</dt>
An apparatus used to produce and measure interference from two or more coherent wave trains from the same source. See radio interferometer. </dd>
Interferometers are used to measure wavelengths, to measure angular width of sources, to determine the angular position of sources (as in satellite tracking), and for many other purposes. </dd>

References

This article is based on NASA's Dictionary of Technical Terms for Aerospace Use