Despite the importance of this thought experiment in the history of quantum mechanics (for example, see the discussion on Einstein's version of this experiment), technically feasible realizations of this experiment were not proposed until the 1970s.
A pesar da importancia deste experimento mental na historia da mecánica cuántica (por exemplo, vexa a discusión sobre versión de Einstein deste experimento), realizacións tecnicamente factibles deste experimento. non se propuxeron ata a década de 1970.