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| | |
 |
Illuminance | |
|---|---|---|
| | |
Characteristic | |
footcandle | | Notes |
|---|---|---|---|---|
| | | |||
Symbol |
fc | |||
Other Name | ft-C | |||
Metric (SI) Equivalent | This equivalent and the others below are calculated from exact values. | |||
Other Metric (SI) Equivalents with More Basic Units | ||||
| 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 | ||||
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 | ||||
| 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 | This equivalent and the others below are exact. | |||
Other Metric (SI) Equivalents with More Basic Units | ||||
|
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 | ||||
| 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. | ||
