Alexander Graham Bell was born on March 3, 1847, to Alexander Melville Bell and Eliza Grace Symonds Bell in Edinburgh, Scotland. He had two brothers, Melville James Bell and Edward Charles Bell, both of whom would die of tuberculosis. Having been born simply “Alexander Bell,” at age 10,...
Who invented the telephone Alexander Graham Bell is the UK's 翻译结果2复制译文编辑译文朗读译文返回顶部 翻译结果3复制译文编辑译文朗读译文返回顶部 Who invented the telephone is the United Kingdom of Alexander Graham Bell 翻译结果4复制译文编辑译文朗读译文返回顶部 ...
On June 3, 1880,Alexander Graham Belltransmitted the first wireless telephone message on his newly invented "photophone," a device that allowed for the transmission of sound on a beam of light. Bell held four patents for the photophone and built it with the help of an assistant, Charles Sumn...
How Did Alexander Bain's Machine Work? Alexander Bain's fax machine transmitter scanned a flat metal surface using a stylus mounted on a pendulum. The stylus picked up images from the metal surface. An amateur clockmaker, Alexander Bain combined parts from clock mechanisms together with telegraph ...