Parabolic antenna be exploited. Italian radio pioneer Guglielmo Marconi used a parabolic reflector during the 1930s in investigations of UHF transmission from his boat in the Mediterranean. In 1931 a 1.7 GHz microwave relay telephone link across the English Channel using 10 ft. (3 meter) diameter dishes was demonstrated. The first large parabolic antenna, a 9 m dish, was built in 1937 by pioneering radio astronomer Grote Reber in his backyard, and the sky survey he did with it was one of the events that founded the field of radio astronomy. The development of radar during World War II provided a great
Long Distance Wireless Photography Long Distance Wireless Photography La Photographie électrique à distance, released in the United States as Long Distance Wireless Photography and in Britain as Electrical Photographer, is a 1908 French short silent comedy film directed by Georges Méliès. In a glass-roofed workshop, an inventor is surrounded by mechanical devices for a complicated machine. The inventor's servants show in a respectably dressed lady and gentleman; the inventor welcomes them in and begins to demonstrate his invention to them. Setting the machine in motion, he unrolls a large screen and places a small image of the Three Graces on a chair; thanks to