2009年11月9日 · Alexander Graham Bell, best known for his invention of the telephone, revolutionized communication as we know it. His interest in sound technology was deep-rooted and personal, as both his wife...

2024年12月21日 · Alexander Graham Bell, Scottish-born American inventor, scientist, and teacher of the deaf whose foremost accomplishments were the invention of the telephone (1876) and refinement of the phonograph (1886).

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. He also co-founded the American Telephone and Telegraph Company (AT&T) in 1885. [7]

2024年9月20日 · The history of the telephone started in 1876 with Alexander Graham Bell’s invention, which made it possible to transmit speech over wires.

Alexander Graham Bell is credited with being the inventor of the telephone since his patent and demonstrations for an apparatus designed for “transmitting vocal or other sounds telegraphically…causing electrical undulations” were successful.

2022年7月12日 · The telephone is one of the most famed Alexander Graham Bell inventions in the world. Work on the telephone began in the summer of 1874. Bell had been studying the inner anatomy of the human ear.

2022年5月26日 · Alexander Graham Bell (March 3, 1847–August 2, 1922) was a Scottish-born American inventor, scientist, and engineer best known for inventing the first practical telephone in 1876, founding the Bell Telephone Company in 1877, and a refinement of Thomas Edison’s phonograph in 1886.

2022年7月12日 · Alexander Graham Bell’s telephone invention amazed visitors at The Centennial International Exhibition of 1876. Though inventions like the Corliss steam engine seemed to be the mightiest, the telephone commanded attention for its utility to the average person.

While Bell is best known for his telephone invention, he worked on hundreds of projects throughout his life and received a number of patents in various fields. In 1880, Bell patented the photophone, which applied his telephone principle in order to transmit words on a beam of light.

2025年1月13日 · In the 1870s two American inventors, Elisha Gray and Alexander Graham Bell, each independently, designed devices that could transmit speech electrically. Gray’s first device made use of a harmonic telegraph, the transmitter and receiver of which consisted of a set of metallic reeds tuned to different frequencies.