def

light

Electromagnetic radiation in the visibile spectrum

meta

supertypes

marker

Marker labels a dict with typing information

    phenomenon

Aspect of scientific interest with measurable quantities

quantities

illuminance

Luminous flux hitting the inside of the sphere at a specific point

luminance

Energy of light in a given direction

luminous-flux

Total perceived light in all directions

luminous-intensity

Perceived light in a particular direction per unit solid angle