calculand - Formula collection, page 8
Unit converter
Quantity converter
Numeral systems
Calculate primes
Convert WARP
Volume formulas
Area formulas
Length formulas
Energy formulas
Force formulas
Pressure formulas
Power formulas
Velocity formulas
Heat formulas
Light formulas
Exponents, roots
Logarithm
Circular functions
Elements and materials
Formula collection
Unit list
Quantity list
Numeral systems list
Impressum/Contact
Light formulas
Color temperature
Color temperature shift
Exposure
Exposure index
Exposure time [N²/2ᴱⱽ] Exposure time [100·N²/(S·2ᴱⱽ)]
Exposure value [lb(N²/t)] Exposure value [2·lb(N)-lb(t)] Exposure value [lb(100/S)+lb(N²/t)] Exposure value [lb(100·N²/(S·t))]
Film speed
Illuminance [Φᵥ/A] Illuminance [Iᵥ/r²·cos(ε)]
Luminance
Luminosity
Luminous efficacy [Φᵥ/P] Luminous efficacy [Iᵥ·Ω/P] Luminous efficacy [Iᵥ·Ω·t/E]
Luminous energy
Luminous flux [Iᵥ·Ω] Luminous flux [Iᵥ·2·π·(1-cos(α/2))]
Luminous intensity [Φᵥ/Ω] Luminous intensity [Φᵥ/(2·π·(1-cos(α/2)))]
Refractive index [c₀/c(M)] Refractive index [c₀·√(ε·µ)]
f-Number [√(t·2ᴱⱽ)] f-Number [√(t·2ᴱⱽ·S)/100)]
Color temperature shift
Exposure
Exposure index
Exposure time [N²/2ᴱⱽ] Exposure time [100·N²/(S·2ᴱⱽ)]
Exposure value [lb(N²/t)] Exposure value [2·lb(N)-lb(t)] Exposure value [lb(100/S)+lb(N²/t)] Exposure value [lb(100·N²/(S·t))]
Film speed
Illuminance [Φᵥ/A] Illuminance [Iᵥ/r²·cos(ε)]
Luminance
Luminosity
Luminous efficacy [Φᵥ/P] Luminous efficacy [Iᵥ·Ω/P] Luminous efficacy [Iᵥ·Ω·t/E]
Luminous energy
Luminous flux [Iᵥ·Ω] Luminous flux [Iᵥ·2·π·(1-cos(α/2))]
Luminous intensity [Φᵥ/Ω] Luminous intensity [Φᵥ/(2·π·(1-cos(α/2)))]
Refractive index [c₀/c(M)] Refractive index [c₀·√(ε·µ)]
f-Number [√(t·2ᴱⱽ)] f-Number [√(t·2ᴱⱽ·S)/100)]