Linked from

The 14 pages that link to Irradiance, each with the reason it gives.

• Spectral power distributionRelated: Spectral irradiance is the SPD per unit area and wavelength interval at a receiving surface.

• IlluminanceCompared with: It parallels illuminance but measures physical radiant power without visual weighting.

• Radiant fluxBroader topic: It describes received flux after specifying the area of the receiving surface.

• Radiant intensityCompared with: Unlike radiant intensity, it is defined at a receiving surface rather than per direction at a source.

• RadianceRelated: Integrating incoming radiance over directions gives irradiance.

• RadiometryBroader topic: It measures the power arriving at a receiving surface.

• Spectral radianceCompared with: It integrates over incoming directions, whereas radiance preserves directional information.

• Photosynthetically active radiationRelated: Energy-based PAR measurements express the radiation arriving at a surface as irradiance.

• Solar radiationRelated: It measures the intensity of solar energy arriving at a surface.

• Luminous intensityCompared with: It describes received physical power rather than perceived directional output.

• PhototherapyRelated: It describes how intensely a phototherapy device delivers light to the treatment surface.

• Square metreRelated: Its SI unit, watt per square metre, uses the square metre as the area basis.

• Lambert's cosine lawRelated: Its decrease at oblique incidence is the illumination form of the cosine law.

• Diffuse sky radiationNarrower topic: Diffuse sky radiation is an irradiance component defined by the directions from which light arrives.