Word: branchesâ
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Dates: during 1927-1927
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...upper end of this tube was split into two branches???one supplying Mr. Beebe with air, the other connecting with a delicate telephone receiver. Thus, Mr. Beebe utilized the column of air which kept him alive, to transmit the sound waves of his voice to an amanuensis at the sea's surface. The device was contrived by Dr. Mark Barr, English physicist, who accompanied the expedition...
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