> What many don’t realize is that the double slit experiment (with particles), proposed by Feynman in 1963, was for decades only a thought experiment. Finally,

> What many don’t realize is that the double slit experiment (with particles), proposed by Feynman in 1963, was for decades only a thought experiment. Finally, in 2013, it was successfully performed with electrons. Total crackpot, electron diffraction was observed in 1927 by several different groups of people[1][2] some of them who later in 1937 shared the Nobel Prize in Physics[3]. [1] http://www.nature.com/nature/journal/v119/n3007/pdf/119890a0.pdf http://www.nature.com/nature/journal/v119/n3007/pdf/119890a0... [2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1085484/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1085484/ [3] https://www.nobelprize.org/prizes/physics/1937/summary/ https://www.nobelprize.org/prizes/physics/1937/summary/