Amos Emerson Dolbear (November 10, 1837 – February 23, 1910) was an American physicist and inventor. Dolbear researched electrical spark conversion into sound waves and electrical impulses. He was a professor at University of Kentucky in Lexington from 1868 until 1874.
逝世于： 1910 年 2 月 23 日
From Wikipedia, the free encyclopedia ... Amos Emerson Dolbear (November 10, 1837 – February 23, 1910) was an American physicist and inventor. Dolbear researched ...
The Telephone: An Account of the Phenomena of Electricity, Magnetism, and Sound, as Involved in Its Action. With Directions for Making a Speaking Telephone
The Art of Projecting: A Manual of Experimentation in Physics, Chemistry, and Natural History with the Porte Lumiere and Magic Lantern
The Telephone Appeals (january 24-february 8, 1887): ... Amos E. Dolbear Et Al., Appellants ... The Molecular Telephone Co. Et Al., Appellants ... The Clay Commercial Telephone Co. Et Al. ... The People's Telephone Co. Et Al., Appellants ... The
2020年2月19日 — Amos Dolbear was born in 1837 in Connecticut and is well known for his invention of a system for transmitting telegraph signals without ...
In 1876, Dolbear patented a magneto electric telephone, in 1879 a static telephone, and three years later he managed to communicate over a distance of a quarter ...
1837 - 1910 ... Amos Emerson Dolbear was a physicist and inventor. He was born in Norwich, CT. His father died when he was young and he had a youth in hardship ...
作者：GW Bennett · 1950 — Pennsylvania Academy of Science 143. Pioneer Scientists of the Western Lea. IV. AMOS DOLBEAR, GENIUS FROM THE WEST. George W. Bennett. Grove City College.