Laser Measuring Devices

Often science fictions predict the actual inventions of science and technology. For instance, 20,000 leagues under the sea was written in 1870, while submarines were in highly experimental stage and not at all successful, and stories about flying in rockets into space appeared long before the first manned space flights. Just so, dangerous and mysterious beams were well known in fiction long before the first laser beams were actually discovered in 1960. Star trek, quick off the mark in 1966 used beams and ray guns, but this sort of idea goes right back to Tolstoy in the 1920's, Jules Verne in 1896 and HG Wells in 1898. Lasers used in weaponry are supposedly still in the experimental stage, but for quite a long time now, lasers have revolutionised the building trade.

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