Nit

nit

A measurement of luminance. One nit is equal to one candela per square meter (1cd/m2). Ten thousand nits are equal to one stilb. See candela.

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nit¹

1. the egg of a louse, usually adhering to human hair

2. the larva of a louse or similar insect

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nit²

a unit of luminance equal to 1 candela per square metre

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nit³ a unit of information equal to 1.44 bits

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nit [nit]

(communications)

A unit of information content such that the information content of a symbol or message in nits is the negative of the natural logarithm of the probability of selecting that symbol or message from all the symbols or messages which could have been chosen. Also known as nepit.

(optics)

A unit of luminance, equal to 1 candela per square meter. Abbreviated nt.

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nit

A unit of luminance equal to 1 candela per square meter. Abbr. nt.

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Nit 

the name of a unit of luminance previously included in the International System of Units (SI). The unit is equal to 1 (candle/m²). It was accepted by the International Commission on Illumination in 1951 and by the All-Union State Standard (GOST) 7932–56 on light units but was not approved by the General Conference on Weights and Measures. The international symbol is nt; 1 nt = 10^-4 candle/cm² = 9.95 × 10^-5 stilb = 3.13 × 10^-4 lambert. The term “nit” is not included in new standards of units.