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| physical object > artifact > device > instrument > optical device > wavefront modifier > spectrograph dispersing element > Fabry-Perot interferometer | 
| Fabry-Perot interferometer comparison table | |||||||||||||||||||
| Subject | has purpose | has location | has material | has owner | is a kind of | has volume | has temperature | has creator | has operator | has acronym | has velocity | has dispersion | has momentum | has extent | has mass | has definition | has angular momentum | has wavefront modification | has creation date | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| etalon | or center of gravity | Fabry-Perot interferometer | FP | Essentially an optical filter that operates by multiple-beam interference of light reflected and transmitted by a pair of parallel flat reflecting plates. | wavelength | 
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