Speakur

Word Pronunciation & Dictionary

optical flat

Word Rarity Rare

Frequency: Zipf frequency 3.98 in modern English

Syllables
op-ti-cal flat
IPA
18
Scrabble Score
11
Letters
3
Syllables
8
Unique Chars

Meaning

noun

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.

Inflected Forms

optical flats (plural)

Questions

What does optical flat mean?
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.

How to pronounce optical flat

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