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8 Cards in this Set
- Front
- Back
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photometer or common light meter (cheapest)
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measures amount of luminance (footcandles)
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foot-candle (ft-c)
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1 lumen per square foot
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lux
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1 lumen per square meter. 1 ft-c= 10.76 lux
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quantum sensor
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measures actual light intensity or light energy in the 400-700 nm
wavelength band |
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photosynthetically active radiation
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light intensity in the 400-700 nm
wavelength band that is used by plants in photosynthesis. |
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quantum sensor expressed as
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a) microEinstein per second per square meter - mEs-1m-2 (400-700 nm)
b) watts per square meter - Wm-2(400-700 nm) |
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radiometer
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measures radiant energy received at all wavelengths, i.e. total solar radiation
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spectral radiometer
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measures the intensity at each wavelength (i.e. color spectrum
from a light). |
