Here are three photographs out of a possible six from the photo-archive of the famous newspaper El Mundo of Argentina. Interestingly, they are stamped 1st April 1935. Now, I don’t know if the Spanish, or indeed the Argentinians, reserve the 1st of April for tricks, leg-pulls, spoofs, scams or other deceptions, but if Dr Pribil, a Hungarian oculist, was deliberately playing a trick on journalists with his demonstration of ‘Invisibility Rays’, then he certainly went to a lot of trouble to do it.
According to the typewritten labels on the back of each photograph Pribil placed three objects—a teddy bear, a bronze statuette and an opaque china vase -- in his apparatus—basically a wooden box fronted by a picture frame behind which is a sort of slated affair. Out of the back of this box electric cables are connected to a supply. Unfortunately, the two photos showing how the objects gradually fade away are missing, but the last photo does show that all the objects have now disappeared.’ They are in the same place, perfectly tangible ‘, the caption points out, ‘but are completely invisible’.Continue reading