A Fly’s Footfall
David Trotter: On the Mic, 24 September 2026
“... too.’Microphones convert sound waves into an electrical signal. They both receive and transmit. Alexander Graham Bell’s unveiling of the telephone at the Centennial Exhibition in Philadelphia in June 1876 created an absolute need for such a mechanism. The telephone’s primary weakness lay in its transmitter. The problem was not so much how to capture ... ”