Quote:
Originally Posted by Worldwalker
Wrong. A TV signal is simply pictures encoded in radio waves, and a TV receiver is a device to recreate those pictures by decoding the radio waves (until recently, via a big vacuum tube). It is absolutely an add-on to radio.
Wrong. Vacuum tubes are still produced on a regular basis. There are also still entire books of instructions on how to design tubes, not to mention pre-existing designs. It would probably be easier to hire a competent vacuum tube designer than a competent buggy whip maker, let alone a flint knapper.
Old movies were not lost because of their format; they were lost because the film CAUGHT FIRE or FELL APART, or was never saved at all. Let's not even go into what the Time executives did when they bought Warner Brothers. Physical disintegration affects old films, old data tapes ... and old books.
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actually I took a class in flint knapping when I was getting my Anthropology degree.
I know, not particularly germane to the conversation