focal plane

fo·cal plane

F f

Transcription

- US Pronunciation
- US IPA
- [foh-kuh l pleyn]
- /ˈfoʊ kəl pleɪn/

- US Pronunciation
- US IPA
- [foh-kuh l pleyn]
- /ˈfoʊ kəl pleɪn/

Definitions of focal plane words

noun focal plane a plane through a focal point and normal to the axis of a lens, mirror, or other optical system. Compare principal plane. 1
noun focal plane the transverse plane in a telescope where the real image of a distant view is in focus. 1
noun focal plane the plane that is perpendicular to the axis of a lens or mirror and passes through the focal point 0
noun focal plane the plane in a telescope, camera, or other optical instrument in which a real image is in focus 0

See all 4 definitions of focal plane

Information block about the term

Origin of focal plane

First appearance:

before 1890

One of the 20% newest English words

First recorded in 1890-95

Historical Comparancy

Parts of speech for Focal plane

noun

adjective

verb

adverb

pronoun

preposition

conjunction

determiner

exclamation

Full grammatical hierarchy of Focal plane

focal plane popularity

A pretty common term. Usually people know it’s meaning, but prefer to use a more spread out synonym. About 32% of English native speakers know the meaning and use word.

According to our data about 64% of words is more used. This is a rare but used term. It occurs in the pages of specialized literature and in the speech of educated people.

focal plane usage trend in Literature

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