Alexander Graham Bell - Engineering and Technology History Wiki
“Mr. Bell, are you going to the Centennial?” might have been the words history remembered as the first spoken over Bell’s magneto telephone that would become commercialized in less than a year.
Neobsahuje rsMusí obsahovat rs
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).
Neobsahuje rsMusí obsahovat rs
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.Alexander Graham Bell - Wikipedia
Alexander Graham Bell (/ ˈ ɡ r eɪ . ə m/ ; born Alexander Bell; March 3, 1847 – August 2, 1922) [4 ] was a Scottish-born [N 1 ] Canadian-American inventor, scientist, and engineer who is credited with patenting the first practical telephone…
Neobsahuje rsMusí obsahovat rs
6 Fast Facts about Alexander Graham Bell | Britannica
This Encyclopedia Britannica Technology list presents six interesting facts about Alexander Graham Bell and his inventions.
Neobsahuje rsMusí obsahovat rs
Alexander Graham Bell - Linda Hall Library
Alexander Graham Bell, a Scottish/American/Canadian inventor, was born Mar. 3, 1847, in Edinburgh. Bell's father and grandfather were elocutionists and phoneticians, with interests.
Neobsahuje rsMusí obsahovat rs
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.
Neobsahuje rsMusí obsahovat rs
Gramofon, fonograf i detektor šrapnelů. Alexander Graham Bell…
Alexander G. Bell složil přijímací zkoušky ke studiu v Londýně, ale studium nedokončil. V roce 1870 rodina emigrovala do Kanady a o rok později do USA.
Neobsahuje rsMusí obsahovat rs
Alexander Graham Bell (1995) | Kinobox.cz
Vše o filmu Alexander Graham Bell (1995). Videa, fotky, články, uživatelské recenze. Viděli jste film, ohodnoťte ho na Kinoboxu.
Neobsahuje rsMusí obsahovat rs
odkazuje na služby nejen od Seznam.cz.
© 1996–2025 Seznam.cz, a.s.
