A common misconception about LIGO detectors of gravitational waves
classification
🌀 gr-qc
keywords
gravitationalcommondetectorslasermisconceptionwavesanalogybecause
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A common misconception about laser interferometric detectors of gravitational waves purports that, because the wavelength of laser light and the length of an interferometer's arm are both stretched by a gravitational wave, no effect should be visible, invoking an analogy with cosmological redshift in an expanding universe. The issue is clarified with the help of a direct calculation.
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