Fabry–Pérot interferometer
/ˌfabrɪˈpɛrəʊ
/noun
An interferometer that incorporates an etalon, used chiefly in astronomy.In optics, a Fabry-Pérot interferometer or etalon is typically made of a transparent plate with two reflecting surfaces, or two parallel highly reflecting mirrors....
- The Fabry-Perot interferometer also represents a tool essential to studying lasers.
Origin
Early 20th century: named after Charles Fabry (1867–1945) and Alfred Pérot (1863–1925), French physicists.
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- be (or be caught) in a cleft stick
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- Beothuk
- be out of here (or there)
- be out of (or have gone out with) the ark