https://en.wikipedia.org/wiki/Light_field#:~:text=The%20light%20field%20is%20a,is%20given%20by%20its%20radiance .
The *light field* is a vector function <https://en.m.wikipedia.org/wiki/Vector-valued_function> that describes the amount of light <https://en.m.wikipedia.org/wiki/Light> flowing in every direction through every point in space. The space of all possible *light rays <https://en.m.wikipedia.org/wiki/Light_rays>* is given by the five-dimensional <https://en.m.wikipedia.org/wiki/Five-dimensional_space> *plenoptic function*, and the magnitude of each ray is given by its radiance <https://en.m.wikipedia.org/wiki/Radiance>. Michael Faraday <https://en.m.wikipedia.org/wiki/Michael_Faraday> was the first to propose that light should be interpreted as a field, much like the magnetic fields on which he had been working.[1] <https://en.m.wikipedia.org/wiki/Light_field#cite_note-1> The phrase *light field* was coined by Andrey Gershun <https://en.m.wikipedia.org/wiki/Andrey_Aleksandrovich_Gershun> in a classic 1936 paper on the radiometric properties of light in three-dimensional space.
