luminous efficacy unit
data derived with UnitSystems.jl
\[\text{F}^{-1}\text{L}^{-1}\text{T}\cdot \text{J}\]
\[\left[\text{K}_\text{cd}\right]\]
\[K_{\text{cd}} = \frac{I_v}{\int_0^\infty \bar{y}(\lambda)\cdot\frac{dI_e}{d\lambda}d\lambda}, \qquad \bar{y}\left(\frac{c}{540\times 10^{12}}\right)\cdot I_e = 1\]
| Quantity | Product | UnitSystem |
|---|---|---|
| $683.01969009009$ $\left[\text{lm} \cdot \text{W}^{-1}\right]$ | $\text{K}_\text{cd}$ | Metric |
| $683.01969009009$ $\left[\text{lm} \cdot \text{W}^{-1}\right]$ | $\text{K}_\text{cd}$ | SI2019 |
| $683.01969009009$ $\left[\text{kg}^{-1}\text{m}^{-2}\text{s}^{3}\text{lm}\right]$ | $\text{K}_\text{cd}$ | SI1976 |
| $683.0197015(85)$ $\left[\text{lm} \cdot \text{W}^{-1}\right]$ | $\hbar\cdot \text{K}_\text{cd}\cdot \text{R}_\text{K}\cdot \text{K}_\text{J}^{2}2^{-2}$ | CODATA |
| $683.0198236454071$ $\left[\text{lm} \cdot \text{W}^{-1}\right]$ | $\hbar\cdot \text{K}_\text{cd}\cdot {\text{R}_\text{K}^{90}}\cdot {\text{K}_\text{J}^{90}}^{2}2^{-2}$ | Conventional |
| $683.1324069249656$ $\left[\text{lm} \cdot \text{W}^{-1}\right]$ | $\text{K}_\text{cd}\cdot \Omega_\text{it}^{-1}\text{V}_\text{it}^{2}$ | International |
| $683.1494791916235$ $\left[\text{lm} \cdot \text{W}^{-1}\right]$ | $\text{K}_\text{cd}1.0001900224889804$ | InternationalMean |
| $683.01969009009$ $\left[\text{lm} \cdot \text{W}^{-1}\right]$ | $\text{K}_\text{cd}$ | MetricTurn |
| $683.01969009009$ $\left[\text{lm} \cdot \text{W}^{-1}\right]$ | $\text{K}_\text{cd}$ | MetricSpatian |
| $683.01969009009$ $\left[\text{lm} \cdot \text{W}^{-1}\right]$ | $\text{K}_\text{cd}$ | MetricGradian |
| $683.01969009009$ $\left[\text{lm} \cdot \text{W}^{-1}\right]$ | $\text{K}_\text{cd}$ | MetricDegree |
| $683.01969009009$ $\left[\text{lm} \cdot \text{W}^{-1}\right]$ | $\text{K}_\text{cd}$ | MetricArcminute |
| $683.01969009009$ $\left[\text{lm} \cdot \text{W}^{-1}\right]$ | $\text{K}_\text{cd}$ | MetricArcsecond |
| $6698.135043821981$ $\left[\text{kgf}^{-1}\text{m}^{-1}\text{s}\cdot \text{lm}\right]$ | $\text{K}_\text{cd}\cdot \text{g}_0$ | Engineering |
| $6698.135043821981$ $\left[\text{kgf}^{-1}\text{m}^{-1}\text{s}\cdot \text{lm}\right]$ | $\text{K}_\text{cd}\cdot \text{g}_0$ | Gravitational |
| $683019.6900900899$ $\left[\text{t}^{-1}\text{m}^{-2}\text{s}^{3}\text{lm}\right]$ | $\text{K}_\text{cd}\cdot 2^{3}5^{3}$ | MTS |
| $6.830196900900899 \times 10^{-5}$ $\left[\text{lm} \cdot \text{s} \cdot \text{erg}^{-1}\right]$ | $\text{K}_\text{cd}\cdot 2^{-7}5^{-7}$ | EMU |
| $6.830196900900899 \times 10^{-5}$ $\left[\text{lm} \cdot \text{s} \cdot \text{erg}^{-1}\right]$ | $\text{K}_\text{cd}\cdot 2^{-7}5^{-7}$ | ESU |
| $6.830196900900899 \times 10^{-5}$ $\left[\text{lm} \cdot \text{s} \cdot \text{erg}^{-1}\right]$ | $\text{K}_\text{cd}\cdot 2^{-7}5^{-7}$ | Gauss |
| $6.830196900900899 \times 10^{-5}$ $\left[\text{lm} \cdot \text{s} \cdot \text{erg}^{-1}\right]$ | $\text{K}_\text{cd}\cdot 2^{-7}5^{-7}$ | LorentzHeaviside |
| $28.78252493663283$ $\left[\text{lb}^{-1}\text{ft}^{-2}\text{s}^{3}\text{lm}\right]$ | $\text{K}_\text{cd}\cdot \text{ft}^{2}\text{lb}$ | FPS |
| $77.17086290732456$ $\left[\text{lb}^{-1}\text{in}^{-1}\text{s}\cdot \text{lm}\right]$ | $\text{K}_\text{cd}\cdot \text{g}_0\cdot \text{ft}\cdot \text{lb}\cdot 2^{-2}3^{-1}$ | IPS |
| $926.0503548878947$ $\left[\text{lb}^{-1}\text{ft}^{-1}\text{s}\cdot \text{lm}\right]$ | $\text{K}_\text{cd}\cdot \text{g}_0\cdot \text{ft}\cdot \text{lb}$ | British |
| $926.0503548878947$ $\left[\text{lbf}^{-1}\text{ft}^{-1}\text{s}\cdot \text{lm}\right]$ | $\text{K}_\text{cd}\cdot \text{g}_0\cdot \text{ft}\cdot \text{lb}$ | English |
| $926.0522069923087$ $\left[\text{lbf}^{-1}\text{ft}^{-1}\text{s}\cdot \text{lm}\right]$ | $\text{K}_\text{cd}\cdot \text{g}_0\cdot \text{ft}_\text{US}\cdot \text{lb}$ | Survey |
| $0.017198446999173198$ $\left[\text{lb}^{-1}\text{mi}^{-2}\text{h}^{3}\text{lm}\right]$ | $\text{K}_\text{cd}\cdot \text{ft}^{2}\text{lb}\cdot 2^{-2}3^{-4}5^{-4}11^{2}$ | MPH |
| $0.014639482383618183$ $\left[\text{kg}^{-1}\text{km}^{-2}\text{h}^{3}\text{lm}\right]$ | $\text{K}_\text{cd}\cdot 2^{-6}3^{-6}$ | KKH |
| $0.05056853095(25)$ $\left[\text{keg}^{-1}\text{nm}^{-2}\text{h}^{3}\text{lm}\right]$ | $\text{K}_\text{cd}\cdot \text{g}_0^{-5/2}\text{GM}_\text{E}^{5/2}\tau^{5}2^{-49}3^{-12}5^{-31}$ | Nautical |
| $687.9792808(35)$ $\left[\text{lm} \cdot \text{eW}^{-1}\right]$ | $\text{K}_\text{cd}\cdot \text{g}_0^{-5/2}\text{GM}_\text{E}^{5/2}\tau^{5}2^{-45}5^{-35}$ | Meridian |
| $4.71247(10) \times 10^{40}$ $\left[\text{M}_\odot^{-1}\text{au}^{-2}\text{D}^{3}\text{lm}\right]$ | $\hbar^{-1}\text{c}^{-1}\text{K}_\text{cd}\cdot \text{au}^{5}\text{k}_\text{G}^{2}\text{m}_\text{P}^{2}\tau^{3}2^{-49}3^{-23}5^{-16}$ | IAU☉ |
| $9.34520(21) \times 10^{29}$ $\left[\text{ME}^{-1}\text{LD}^{-2}\text{D}^{3}\text{lm}\right]$ | $\hbar^{-1}\text{c}^{-1}\text{K}_\text{cd}\cdot \text{m}_\text{P}^{2}\text{GM}_\text{E}\cdot \tau\cdot 2^{-15}3^{-3}202692169$ | IAUE |
| $1.218177(27) \times 10^{39}$ $\left[\text{MJ}^{-1}\text{JD}^{-2}\text{D}^{3}\text{lm}\right]$ | $\hbar^{-1}\text{c}^{-1}\text{K}_\text{cd}\cdot \text{m}_\text{P}^{2}\text{GM}_\text{J}\cdot \tau\cdot 2^{-9}3^{-7}5^{6}67336617049$ | IAUJ |
| $1.0$ $\left[\mathbb{1}\right]$ | $1$ | Hubble |
| $1.0$ $\left[\text{M}^{-1}\text{T}\cdot \text{J}\right]$ | $1$ | Cosmological |
| $1.0$ $\left[\mathbb{1}\right]$ | $1$ | CosmologicalQuantum |
| $1.0$ $\left[\mathbb{1}\right]$ | $1$ | Planck |
| $1.0$ $\left[\mathbb{1}\right]$ | $1$ | PlanckGauss |
| $1.0$ $\left[\text{M}^{-1}\text{T}\cdot \text{J}\right]$ | $1$ | Stoney |
| $1.0$ $\left[\mathbb{1}\right]$ | $1$ | Hartree |
| $1.0$ $\left[\text{M}^{-1}\text{L}^{-2}\text{T}^{5}\right]$ | $1$ | Rydberg |
| $1.0$ $\left[\text{M}^{-1}\text{L}^{-2}\text{T}^{5}\right]$ | $1$ | Schrodinger |
| $1.0$ $\left[\mathbb{1}\right]$ | $1$ | Electronic |
| $1.0$ $\left[\mathbb{1}\right]$ | $1$ | Natural |
| $1.0$ $\left[\mathbb{1}\right]$ | $1$ | NaturalGauss |
| $1.0$ $\left[\mathbb{1}\right]$ | $1$ | QCD |
| $1.0$ $\left[\mathbb{1}\right]$ | $1$ | QCDGauss |
| $1.0$ $\left[\mathbb{1}\right]$ | $1$ | QCDoriginal |