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| X/4 plate; quarter-wave plate (having a retardation of a quarter wavelength of light); quarter-wave retardation plate; quarter-wave retarding plate; quarter-wave retarder | |||
| quarter-wavelength plate; quarter-wave plate; Venetian blind | |||
| Viertelwellenlängenplättchen: 2 phrases in 1 subject |
| Optics branch of physics | 2 |