"Nit (unit)" redirects here. For the unit of information entropy, see Nat (unit).
Candela per square metre
Unit system
SI
Unit of
luminance
Symbol
cd/m2
In SI base units:
cd·m−2
The candela per square metre (symbol: cd/m2) is the unit of luminance in the International System of Units (SI). The unit is based on the candela, the SI unit of luminous intensity, and the square metre, the SI unit of area.
The nit (symbol: nt) is a non-SI name also used for this unit (1 nt = 1 cd/m2).[1] The term nit is believed to come from the Latin word nitēre, "to shine".[2]
As a measure of light emitted per unit area, this unit is frequently used to specify the brightness of a display device. The sRGB spec for monitors targets 80 cd/m2.[3] Typically, monitors calibrated for SDR broadcast or studio color grading should have a brightness of 100 cd/m2.[4] Most consumer desktop liquid crystal displays have luminances of 200 to 300 cd/m2.[5] HDR displays range from around 400 to 2500 cd/m2.[6]
^Buser, Pierre; Imbert, Michel (1992). Vision. MIT Press. p. 53. ISBN 978-0-262-02336-8. nit luminance.
^Boyd, RLF, ed. (1992). Astronomical Photometry. Springer. p. 9. ISBN 978-0-7923-1653-4.
^"Multimedia systems and equipment – Colour measurement and management – Part 2-1: Colour management – Default RGB colour space – sRGB". International Electrotechnical Commission. 1999. IEC 61966-2-1.
^"ITU-R BT.2035-7" (PDF). A reference viewing environment for evaluation of HDTV program material or completed programmes. 2013-08-13. Archived (PDF) from the original on 2022-12-20. Retrieved 2022-12-20.
^Hung, Jonathan (May 3, 2010). "Acer Ferrari One 200 Review – More than a Netbook". PC Perspective. Retrieved 2018-01-21.
^Cohen, Steven. "What is HDR? High dynamic range TVs and formats, explained". Business Insider. Retrieved 2024-05-08.
and 20 Related for: Candela per square metre information
60 new candles persquare centimetre. It was then ratified in 1948 by the 9th CGPM which adopted a new name for this unit, the candela. In 1967 the 13th...
the importance of this contrast). The SI unit for luminance is candelapersquaremetre (cd/m2). A non-SI term for the same unit is the nit. The unit in...
illuminance, or luminous flux per unit area, in the International System of Units (SI). It is equal to one lumen persquaremetre. In photometry, this is used...
their derivation: for example, the squaremetre (m2), the SI derived unit of area; and the kilogram per cubic metre (kg/m3 or kg⋅m−3), the SI derived unit...
sensitivity of the human eye. The SI unit of luminous intensity is the candela (cd), an SI base unit. Photometry deals with the measurement of visible...
sources SI defining constants, including Kcd (used in the definition of candela) Defined such that the maximum possible luminous efficacy corresponds to...
units illuminance is measured in lux (lx), or equivalently in lumens persquaremetre (lm·m−2). Luminous exitance is measured in lm·m−2 only, not lux. In...
as the luminous flux of light produced by a light source that emits one candela of luminous intensity over a solid angle of one steradian. 1 lm = 1 ...
an obsolete unit of luminance. The SI unit of luminance is the candelapersquaremetre (cd/m2). In 1942 Parry Moon proposed to rename the apostilb the...
device. Luminance, the original meaning of brightness, is the amount of light per solid angle coming from an area, such as the sky. The table below shows the...
international system derived six base units: the metre, kilogram, second, ampere, degree Kelvin, and candela. The 9th CGPM also approved the first formal...
color-band respectively. Surface brightness can also be expressed in candelapersquaremetre using the formula [value in cd/m2] = 10.8×104 × 10(−0.4×[value...
are the metre for measurement of length, the second for time, the gram for mass, the coulomb for charge, the kelvin for temperature, the candela for luminous...
(SI) is the system of units that has been officially endorsed under the Metre Convention since 1960. Child articles are: SI base unit SI derived unit...
refers to the emitted luminous intensity on screen, measured in candelapersquaremetre (cd/m2). The higher the number, the brighter the screen. It is...
for Soft Edition (also known as Lite Edition) The nit (known as Candelapersquaremetre, cd/m2) is the SI measurement unit of luminance, used to describe...
projected source area. The candelapersquaremetre is sometimes called the nit. Illuminance Ev lux (= lumen persquaremetre) lx (= lm/m2) L−2⋅J Luminous...
for luminance is candelapersquaremetre (cd/m2). The CGS unit of luminance is the stilb, which is equal to one candelapersquare centimetre or 10 kcd/m2...
bulbs. The 2D brightness cinema standard is 14 foot-lamberts (48 candelapersquaremetre), as set by the SMPTE standard 196M. As of 2012[update], there...
Global Information