optical flat

English

optical flat (plural optical flats)

(optics) A disk of high-quality quartz glass having at least one side ground and polished with a deviation in flatness less than 50 nanometers all over, and a surface quality of 5 microfinish or less; used, in an interferometer, to measure the flatness of other surfaces.

单词	optical flat
释义	optical flat English Noun optical flat (plural optical flats) (optics) A disk of high-quality quartz glass having at least one side ground and polished with a deviation in flatness less than 50 nanometers all over, and a surface quality of 5 microfinish or less; used, in an interferometer, to measure the flatness of other surfaces.
随便看	videolink videolinks videollamada videollamadas videolocadora videolocadoras videoludica videoludiche videoludici videoludico videoludo videom videomagnetica videomagnetiche videomagnetici videomagnetico videomagnó videomail videomaker videomakers videomaking videomania videomanie videomanometry videomapping