WikiWord

English

f-number

noun

Meaning

  1. The ratio of the focal length of a lens to its diameter; a measure of the light-gathering ability of the lens.

Etymology / origin

No prose etymology has been added yet.

No ancestor words have been linked yet.

Related words

f-value(English)f-stop(English)fresnel number(English)f stop(English)stop(English)focal length(English)froude number(English)n-firm concentration ratio(English)

Descendant words

No descendant words have been linked yet.

Sources

  1. DictionaryAPI.dev English dictionary data
f-number — meaning and etymology | WikiWord