common light meter (cheapest) - measures amount of luminance
a) foot-candle (ft-c) - 1 lumen per square foot
b) lux - 1 lumen per square meter
1 foot-candle = 10.76 lux
wavelength band that is used by plants in photosynthesis.
per square meter - Wm-2(400-700
- measures radiant energy received at all wavelengths, i.e. total solar
radiometer - measures the intensity at each wavelength (i.e.