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El Flea
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What is the relationship between light intensity and irradiance? How do I convert one to the other?
Nope that the unit of irradiance. As I said - intensity is often losely used when you should say irradiance.El Flea said:Isn't W(m^-2) the unit for light intensity?
It depends on the bandwidth, if you have 1W(m^-2)(nm^-1) then you would have 100W/m^2 over a 100nm bandwidthSo, if I have, let's say, 1W(m^-2)(nm^-1) spectral irradiance, in the 400nm wavelength range, can I say that I have 1x(10^-9)W(m^-2) light intensity over the same area?
Light intensity refers to the amount of light particles (photons) in a given area, while irradiance is the amount of light energy that falls on a surface per unit area.
Light intensity is typically measured in units of lux or lumens per square meter, using a light meter. Irradiance is measured in watts per square meter, using a radiometer or spectrometer.
Light intensity is a crucial factor in plant growth as it determines the rate of photosynthesis. Higher light intensity can lead to faster growth and higher yields, but too much light can also damage plants.
Yes, both light intensity and irradiance can be controlled by adjusting the distance between the light source and the surface, as well as using light filters or dimmers. Advanced techniques such as artificial lighting and shading can also be used to manipulate light intensity and irradiance.
No, the optimal light intensity and irradiance for plant growth can vary depending on the type of plant, its stage of growth, and environmental conditions. It is important to research and understand the light needs of specific plants in order to achieve optimal growth.