Alexander Graham Bell – Wikipedie
Alexander Graham Bell (3. března 1847 Edinburgh, Skotsko – 2. srpna 1922 Baddeck, Kanada) byl skotsko-americký vědec a vynálezce, který se zabýval tvorbou lidské řeči, výchovou hluchoněmých a elektromagnetickým přenosem řeči.
Alexander Graham Bell honors and tributes - Wikipedia
The Bell Telephone Memorial, commemorating the invention of the telephone by Alexander Graham Bell. The monument, paid by public subscription and sculpted by W.S. Allward, was dedicated by the Governor General of Canada, Victor Cavendish, 9…
Alexander Graham Bell The National Inventors Hall of Fame
National Inventors Hall of Fame Inductee Alexander Graham Bell's invention of the telephone grew out of his research on improving the telegraph.
Alexander Graham Bell | Biography, Education, Family, Telephone…
Alexander Graham Bell (1847–1922) was a British-American inventor, scientist, and teacher of the deaf whose foremost accomplishments were the invention of the telephone (1876) and refinement of the phonograph (1886).
Who was Alexander Graham Bell?
Alexander Graham Bell was an inventor, scientist, and teacher who is best remembered for inventing the telephone. He was born on March 3, 1847, in Scotland, and he and his family moved to England in 1865 and Canada in 1870. A year later Bell moved to the United States, where he taught speech to deaf students and where he also invented and improved a number of electrical technologies. He became a U.S. citizen in 1882 while remaining a British subject; he later moved to Canada and lived there until his death on August 2, 1922.What did Alexander Graham Bell invent?
Although Alexander Graham Bell is best remembered as the inventor of the telephone, he invented other devices too. Bell developed several sonic technologies, including the photophone (1880) and the Graphophone (1886). He also developed medical technology. After the shooting of U.S. Pres. James A. Garfield in July 1881, Bell teamed up with professor Simon Newcomb of the U.S. Nautical Almanac Office to develop an electrical bullet probe. The pair demonstrated the probe in the autumn of 1881. Bell later shifted his attention to aerial technology. He founded the Aerial Experiment Association in 1907.How did Alexander Graham Bell’s telephone work?
The first telephone had two parts: a transmitter and a receiver. The transmitter comprised three parts—a drumlike device (a cylinder with a covered end), a needle, and a battery. The covered end of the drumlike device was attached to the needle. The needle was connected by wire to the battery, and the battery was connected by wire to a receiver. When Bell spoke into the open end of the drumlike device, his voice made the paper and needle vibrate. The vibrations were then converted into an electric current which traveled along the wire to the receiver.Vynálezce Alexander Graham Bell: jeho životopis a zajímavosti
Známe ho jako tvůrce telefonu, ale vynálezce Alexander Graham Bell vymyslel spoustu dalších zařízení. Jeho životopisem se prolíná snaha „rozmluvit“ hluchoněmé.
Alexander Graham Bell - otec telefonu
1. 8. 2012Praha – 3. března 1847 se v Edinburghu narodil Alexander Graham Bell; fyziolog řeči proslul jako vynálezce telefonu a gramofonu. Stěžejní snahou, která stála u zrodu telefonu, byla pomoc hluchoněmým.
Alexander Bell | Eduportál Techmania
Alexander Graham Bell se narodil v Edinburgu ve Skotsku. V jeho rodině bylo tradicí stát se vychovatelem a učitelem dětí s vadami sluchu a řeči.
Alexander Graham Bell - vědec, který pomáhal hluchým a sluchově…
Přestože je Alexander Graham Bell nejčastěji spojován s vynálezem telefonu, jeho zájmy byly nesmírně rozmanité. Byl držitelem celkem 18 patentů a spoludržitelem dalších 12.
Před 165 lety se narodil vynálezce telefonu Alexander Graham Bell
2. 3. 2012Před 165 lety, 3. března 1847, se v Edinburghu narodil Alexander Graham Bell, fyziolog řeči, který proslul jako vynálezce telefonu a gramofonu. U zrodu telefonu stála pomoc hluchoněmým.
odkazuje na služby nejen od Seznam.cz.
© 1996–2025 Seznam.cz, a.s.
