An ordinary one-inch copper pipe, says Professor Harold Barlow of University College in London, can be tricked into carrying 1) a heavy load of power, 2) 2,000 telephone messages, and 3) 20 distinct television programs—and all at the same time.
Dr. Barlow, wartime head of the R.A.F.'s radio research station at Farnborough, is now considered Britain's leading authority on microwaves. He has found that waves 8.6 mm. long (40,000 megacycles) can be forced to travel long distances, with very little loss, through the kind of copper pipe that plumbers use.
In Dr. Barlow's...
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