calculand - Light formulas
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Iᵥ/r²·cos(ε)
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Color temperature
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f-Number
Illuminance -
Eᵥ = Φᵥ / A
alm - Attolumen
Cd msr - Candela millisteradian
Cd (´)² - Candela square arcminute
Cd (´´)² - Candela square arcsecond
Cd cm²/m² - Candela square centimetre per square metre
Cd (°)² - Candela square degree
Cd in²/ft² - Candela square inch per square foot
Cd sr - Candela steradian
CP sr - Candlepower steradian
carcel sr - Carcel steradian
clm - Centilumen
dalm - Decalumen
dlm - Decilumen
Elm - Exalumen
flm - Femtolumen
Glm - Gigalumen
hlm - Hectolumen
klm - Kilolumen
lm - Lumen
Mlm - Megalumen
µlm - Microlumen
mlm - Millilumen
nlm - Nanolumen
Plm - Petalumen
plm - Picolumen
Tlm - Teralumen
Violle sr - Violle steradian
ylm - Yoctolumen
Ylm - Yottalumen
zlm - Zeptolumen
Zlm - Zettalumen
ac - Acre
a - Are
b - Barn
barony - Barony
cho - Chō (町)
circ. in. - Circular inch
circ. mil. - Circular mil (Circular thou)
Dez. - Dezimal (bavarian)
fb - Femtobarn
fen - Fen (市分)
go - Gō (合)
ha - Hectare
jo - Jō (畳)
kb - Kilobarn
li - Li (市厘)
µb - Microbarn
mb - Millibarn
Mg - Morgen (metric)
mu - Mu (市亩 / 畝)
nb - Nanobarn
outhouse - Outhouse
pb - Picobarn
A(P), l²(P) - Planck area
qing - Qing (市顷)
vha - Quarter hectare (Viertelhektar)
se - Se (畝)
shaku - Shaku (勺)
shed - Shed
shi - Shí (市石)
am² - Square attometre
cm² - Square centimetre
dam² - Square decametre
dm² - Square decimetre
Em² - Square exametre
fm² - Square femtometre
ft², sq. ft. - Square foot
Gm² - Square gigametre
Gpc² - Square gigaparsec
hm² - Square hectometre
in², sq. in. - Square inch
km² - Square kilometre
kpc² - Square kiloparsec
Ld² - Square lightday
Lh² - Square lighthour
Lm² - Square lightminute
Ls² - Square lightsecond
ly² - Square lightyear
Mm² - Square megametre
Mpc² - Square megaparsec
m² - Square metre
µm² - Square micrometre
mi², sq. mi. - Square mile
mil², thou² - Square milli-inch (Square mil, Square thou)
mm² - Square millimetre
mam² - Square myriametre
nm² - Square nanometre
pc² - Square parsec
Pm² - Square petametre
pm² - Square picometre
Tm² - Square terametre
Tpc² - Square teraparsec
yd², sq. yd. - Square yard
ym² - Square yoctometre
Ym² - Square yottametre
zm² - Square zeptometre
Zm² - Square zettametre
Ų - Square ångstrøm
tan - Tan (段 / 反)
σₜ - Thomson cross section
tsubo - Tsubo (坪 / 歩)
TIE - Two inch equivalent
alx - Attolux
Cd sr/ft², Cd sr/sq. ft. - Candela steradian per square foot
Cd sr/in², Cd sr/sq. in. - Candela steradian per square inch
Cd sr/m² - Candela steradian per square metre
clx - Centilux
dalx - Decalux
dlx - Decilux
Elx - Exalux
flx - Femtolux
fc, ftc - Footcandle
Glx - Gigalux
hlx - Hectolux
klx - Kilolux
lm/cm² - Lumen per square centimetre
lm/dm² - Lumen per square decimetre
lm/ft² - Lumen per square foot
lm/in² - Lumen per square inch
lm/m² - Lumen per square metre
lm/mm² - Lumen per square millimetre
lx - Lux
Mlx - Megalux
µlx - Microlux
mlx - Millilux
nlx - Nanolux
nx - Nox
Plx - Petalux
ph - Phot
plx - Picolux
Tlx - Teralux
ylx - Yoctolux
Ylx - Yottalux
zlx - Zeptolux
Zlx - Zettalux
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