https://en.wikipedia.org/wiki/Light_field#:~:text=The%20light%20field%20is%2... . 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.