photometry
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photometry
[fo-tom´ĕ-tre]measurement of the intensity of light.
pho·tom·e·try
(fō-tom'ĕ-trē),The measurement of the intensity of light.
photometry
/pho·tom·e·try/ (fo-tom´ĕ-tre) measurement of the intensity of light.photometry
The measurement of light with a photometer. See candela per square metre; luminous flux; footcandle; footlambert; illuminance; luminous intensity; lambert; luminance; millilambert; photometer.
| Table P3 Common photometric units |
| luminous flux |
| lumens |
| luminous intensity (I) |
| candela = lumens/steradian |
| illuminance (E) |
| lux = lumens/m2 |
| footcandle = lumens/ft2 |
| luminance (L) |
| candela/m2 |
| candela/ft2 |
| footlambert |
| lambert |
| millilambert |
| 1 footlambert (fL) = 3.426 cd/m2 |
| 1 lambert = 3183 cd/m2 |
| 1 millilambert = 3.183 cd/m2 |
| 1 candela/m2 = 0.2919 fL |
| 1 candela/ft2 = 3.142 fL |
pho·tom·e·try
(fō-tom'ĕ-trē)The measurement of the intensity of light.
photometry,
n the measurement of the intensity of light, usually in foot-candles.
photometry
measurement of the intensity of light.