optical flat
nounDefinitions
A disk of high-quality quartz glass having at least one side ground and polished with a…
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.
The neighborhood
Vish — recursive loop
No curated loop yet for optical flat. Loops are being traced one word at a time while the ingestion pipeline matures.
sense glosses and etymology drawn from English Wiktionary · source · CC-BY-SA