| അളവ്കോൽ
|
സൂചകം[nb 1]
|
അന്താരാഷ്ട്ര ഏകകം
|
ഏകക സൂചകം
|
ഡയമെൻഷൻ
|
കുറിപ്പുകൾ
|
| Luminous energy
|
Qv [nb 2]
|
lumen second
|
lm⋅s
|
T⋅J [nb 3]
|
units are sometimes called talbots
|
| പ്രകാശപ്രവാഹം(Luminous flux)
|
Φv [nb 2]
|
lumen (= cd⋅sr)
|
lm
|
J
|
also called luminous power
|
| പ്രകാശതീവ്രത(Luminous intensity)
|
Iv
|
candela (= lm/sr)
|
cd
|
J
|
an SI base unit, luminous flux per unit solid angle
|
| Luminance
|
Lv
|
candela per square metre
|
cd/m2
|
L−2⋅J
|
units are sometimes called nits
|
| Illuminance
|
Ev
|
lux (= lm/m2)
|
lx
|
L−2⋅J
|
used for light incident on a surface
|
| Luminous emittance
|
Mv
|
lux (= lm/m2)
|
lx
|
L−2⋅J
|
used for light emitted from a surface
|
| Luminous exposure
|
Hv
|
lux second
|
lx⋅s
|
L−2⋅T⋅J
|
|
| Luminous energy density
|
ωv
|
lumen second per metre3
|
lm⋅s⋅m−3
|
L−3⋅T⋅J
|
|
| Luminous efficacy
|
η [nb 2]
|
lumen per watt
|
lm/W
|
M−1⋅L−2⋅T3⋅J
|
ratio of luminous flux to radiant flux
|
| Luminous efficiency
|
V
|
|
|
1
|
also called luminous coefficient
|
| See also: SI · Photometry · Radiometry
|
