| http://www.w3.org/ns/prov#value | - If you want to limit your measuring of PAR to measuring it in the air, not in the water, you can use a lux meter and get a usable measure of PAR. There is no single conversion factor that will convert lux to micromols per square meter per second (PAR), because PAR is a measurement of the total energy of the photons striking the surface, and the energy per photon varies with the wave length of the
|
