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Solar Simulator Sample Calculations

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Solar Simulator Sample Calculations

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The spectral irradiance at any wavelength, Eλ, is in units of watts per square meter per nm (W m-2 nm-1). The value is a measure of the flux per nm at the specified wavelength incident normally onto an element of the surface divided by the area of the surface element in square meters. The value can be expressed in other units such as W cm-2 nm-1 or W m-2 µm-1. For example, 1.23 W m-2 nm-1 is equivalent to 0.000123 W cm-2 nm-1 or 0.123 W cm-2 µm-1.

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