He invented a stereoscope, patented the concertina, and did work on the theory of resonance of columns of air.
He invented a stereoscope, patented the concertina, and did work on the theory of resonance of columns of air. Along with Cooke, he worked on an electric telegraph project, an interest which led to his inventions of the printing and single-needle telegraphs. FTP, name this professor of experimental physics at King's College, London, whose name is attached to a device, which was actually invented by Christie, that uses Ohm's law to compare resistance, now known as his bridge.
He invented a stereoscope, patented the concertina, and did work on the theory of resonance of columns of air.
Charles {Wheatstone}