Charles Bourseul
Charles Bourseul (28 April 1829 – 23 November 1912) was a pioneer in development of the "make and break" telephone about 20 years before Bell made a practical telephone. Bourseul was born in Brussels, Belgium, and grew up in Douai, France. His father was a French army officer. Charles worked for the telegraph company as a civil engineer and mechanic. He made improvements to the telegraph system of L. F. Breguet (a French instrument maker) and Samuel F. B. Morse. Charles Bourseul experimented with the electrical transmission of the human voice and developed an electromagnetic microphone, but his telephone receiver was unable to convert electric current back into clear human voice sounds.
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1829 in science1912 in Belgium1912 in scienceAcoustic telegraphyAlexander_Graham_BellAntonio MeucciBourseul, CharlesElectrical telegraphHistory of the telephoneIndex of telephone-related articlesInvention of the telephoneJohann Philipp ReisNovember 1912TelephoneTimeline of electrical and electronic engineeringTimeline of the telephone
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Charles Bourseul
Charles Bourseul (28 April 1829 – 23 November 1912) was a pioneer in development of the "make and break" telephone about 20 years before Bell made a practical telephone. Bourseul was born in Brussels, Belgium, and grew up in Douai, France. His father was a French army officer. Charles worked for the telegraph company as a civil engineer and mechanic. He made improvements to the telegraph system of L. F. Breguet (a French instrument maker) and Samuel F. B. Morse. Charles Bourseul experimented with the electrical transmission of the human voice and developed an electromagnetic microphone, but his telephone receiver was unable to convert electric current back into clear human voice sounds.
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Charles Bourseul (28 April 182 ...... éré, France, at the age of 83.
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Charles Bourseul (Bruselas, 28 ...... a primera llamada telefónica.
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Charles Bourseul (Brussel, 28 ...... werkend toestel wist te maken.
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Charles Bourseul (Bruxelles, 2 ...... è stato un inventore francese.
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Charles Bourseul, född 28 apri ...... idsskrifter erkänts som sådan.
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Charles Bourseul, né le 28 avr ...... ré, est un inventeur français.
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Charles Bourseul (28 April 182 ...... into clear human voice sounds.
@en
Charles Bourseul (Bruselas, 28 ...... a primera llamada telefónica.
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Charles Bourseul (Brussel, 28 ...... werkend toestel wist te maken.
@nl
Charles Bourseul (Bruxelles, 2 ...... è stato un inventore francese.
@it
Charles Bourseul, född 28 apri ...... idsskrifter erkänts som sådan.
@sv
Charles Bourseul, né le 28 avr ...... ré, est un inventeur français.
@fr
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Charles Bourseul
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Charles Bourseul
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Charles Bourseul
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Charles Bourseul
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Charles Bourseul
@fr
Charles Bourseul
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Charles Bourseul
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Charles Bourseul
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