Note that the categorizations here are not absolutely rigid, some techniques could be in two of the boxes but this is just an example in my school project. Anyways, I would appreciate if you could verify whether my classification is legit or not. Furthermore, if you can come up with more devices/techniques I could add to my table that would be super!
Note: I'm not sure is it correct to use the category "non-optical" here, but I use it here to simply mean devices/techniques which don't utilize the visible light band in the electromagnetic spectrum.
