The article references the collaborative work done by optical physicist Charles Falco and famed artist David Hockney on Renaissance painters: https://en.wikipe

The article references the collaborative work done by optical physicist Charles Falco and famed artist David Hockney on Renaissance painters: https://en.wikipedia.org/wiki/Hockney%E2%80%93Falco_thesis https://en.wikipedia.org/wiki/Hockney%E2%80%93Falco_thesis I recall this thesis was quite disruptive within the world of art history; there was significant (and vocal) pushback from people who had spent their lives researching these famed artists who were now being confronted with the use of aids (I make no comment here as to any impact on the 'art'). Articles were published in both art history publications and IEEE journals. Falco was a professor of mine in graduate school, and is both a great lecturer in his field and unique in the breadth of his outside interests. I think why I found this topic particularly fascinating was that it took the combination of an artist (Hockney) to start the hypothesis -- the paintings were too "real" to his experienced eyes -- and a physicist (Falco) to confirm the theory through scientific analysis (along with some art history!).