 | rare light bulbs and lamps |
| glossary of terms |  |
What is FOOTCANDLE?
Footcandle is unit of light density measured over a surface. One footcandle is equal to one lumen per square foot of surface. Measured footcandles are dependent of the measure distance from the light source (see law of inverse squares), and angle at which the light reaches the surface (see Cosine Law).
reference for this page: FOOTCANDLE
reference to this page: CONVERSION TABLE