Photometry

+Photometry is the science of measuring [Light](/wiki/Light) as perceived by the human eye. It quantifies aspects like [Luminosity](/wiki/Luminosity) and [Illuminance](/wiki/Illuminance), essential in fields from [Astronomy](/wiki/Astronomy) to [Lighting](/wiki/Lighting) design.

+## See also

+- [Radiometry](/wiki/Radiometry)

+- [Colorimetry](/wiki/Colorimetry)

+- [Candela](/wiki/Candela)