Illuminance | The Units and Constants Handbook at KnowledgeDoor (original) (raw)

Characteristic footcandle Notes
Symbol fc
Other Name ft-C
Metric (SI) Equivalent 1.0763910417 dekaluxes This equivalent and the others below are calculated from exact values.
Other Metric (SI) Equivalents with More Basic Units 1.0763910417 dekalumens / meter2
10.763910417 steradian candelas / meter2 Even though the steradian is a dimensionless derived unit and could be dropped, it is shown in this equivalent for clarity
Metric (SI) Dimensions length-2 × luminous-intensity × solid-angle Even though solid-angle is not an official metric (SI) dimension and could be dropped, it is shown in the dimensions for clarity.
Description in Terms of Other Units and Constants lumen /foot2
Characteristic lux Notes
Symbol lx
Metric (SI) Equivalent lux is a metric unit (in fact, it is a derived SI unit)
Other Metric (SI) Equivalents with More Basic Units 10 decilumens / meter2
1 steradian candela / meter2 Even though the steradian is a dimensionless derived unit and could be dropped, it is shown in this equivalent for clarity
Metric (SI) Dimensions length-2 × luminous-intensity × solid-angle Even though solid-angle is not an official metric (SI) dimension and could be dropped, it is shown in the dimensions for clarity.
Characteristic nox Notes
Metric (SI) Equivalent 1 millilux This equivalent and the others below are exact.
Other Metric (SI) Equivalents with More Basic Units 1 millilumen / meter2
0.001 steradian candelas / meter2 Even though the steradian is a dimensionless derived unit and could be dropped, it is shown in this equivalent for clarity
Metric (SI) Dimensions length-2 ×luminous-intensity × solid-angle Even though solid-angle is not an official metric (SI) dimension and could be dropped, it is shown in the dimensions for clarity.
Characteristic phot Notes
Symbol ph
Metric (SI) Equivalent 10000 luxes This equivalent and the others below are exact.
Other Metric (SI) Equivalents with More Basic Units 10000 lumens / meter2
10000 steradian candelas / meter2 Even though the steradian is a dimensionless derived unit and could be dropped, it is shown in this equivalent for clarity
Metric (SI) Dimensions length-2 × luminous-intensity ×solid-angle Even though solid-angle is not an official metric (SI) dimension and could be dropped, it is shown in the dimensions for clarity.