[1]https://en.wikipedia.org/wiki/Light_field#:~:text=The%20light%20fiel
   d%20is%20a,is%20given%20by%20its%20radiance.
   The light field is a [2]vector function that describes the amount
   of [3]light flowing in every direction through every point in space.
   The space of all possible [4]light rays is given by
   the [5]five-dimensional plenoptic function, and the magnitude of each
   ray is given by its [6]radiance. [7]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.^[8][1] The phrase light
   field was coined by [9]Andrey Gershun in a classic 1936 paper on the
   radiometric properties of light in three-dimensional space.

References

   1. https://en.wikipedia.org/wiki/Light_field#:~:text=The light field is a,is given by its radiance
   2. https://en.m.wikipedia.org/wiki/Vector-valued_function
   3. https://en.m.wikipedia.org/wiki/Light
   4. https://en.m.wikipedia.org/wiki/Light_rays
   5. https://en.m.wikipedia.org/wiki/Five-dimensional_space
   6. https://en.m.wikipedia.org/wiki/Radiance
   7. https://en.m.wikipedia.org/wiki/Michael_Faraday
   8. https://en.m.wikipedia.org/wiki/Light_field#cite_note-1
   9. https://en.m.wikipedia.org/wiki/Andrey_Aleksandrovich_Gershun