Philipp Reis: Inventor of the Telephone. A Biographical Sketch ... |
Termos e frases comuns
apparatus armature articulate auditory nerve auditory ossicles battery Bell's centimetres closing the circuit cloth coil combination of tones condensation conductors constructed contact-pieces corresponding crown 8vo curved lever described Edison edition electric current electric resistance electro-magnet Engineers experiments fixed musical Frankfort Frankfort-on-the-Main Free German Institute Friedrichsdorf galvanic current Garnier's Institute Giessen Herr Hochstift Horkheimer human ear human voice interrupting interruptor inventor iron knitting-needle lecture Legat's Report magnet magnetised mechanical membrane memoir ment metal mitter motion needle opening and closing Philipp Reis phonautograph Physical Society Pisko's plates platinum platinum strip Polytechnisches Practical principle Prof Professor Böttger rarefaction receiver Reis's instruments Reis's invention Reis's Prospectus Reis's Telephone reproduced reproduction of tones resistance screw singing sound sound-waves speaking spiral spring steel strip of platinum telegraph tion trans transmit speech transmitter Treatise tube tympanum undulations undulatory currents varying vibrations violin voice wire words Yeates
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