Insolation solar
This integrated solar irradiance is called solar irradiation, solar radiation, solar exposure, solar insolation, or insolation. Irradiance may be measured in space or at the Earth's surface after atmospheric absorption and scattering. The unit of insolation often used in the industry is kilowatt hours per square metre (kWh/m ). The Sun's rays are as they pass through the • • • • (photosynthesis-irradiance curve)• •.
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