Template:Selected anniversaries/December 24: Difference between revisions

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||1868: Adolphe d'Archiac dies ... paleontologist and geologist.
||1868: Adolphe d'Archiac dies ... paleontologist and geologist.


||1872: William John Macquorn Rankine dies ... physicist and engineer.
||1872: William John Macquorn Rankine dies ... physicist and engineer. Pic.


File:Thomas Edison.jpg|link=Thomas Edison (nonfiction)|1877: [[Thomas Edison (nonfiction)|Thomas Edison)]] files for a patent on the phonograph. The idea came to him while working on a telegraph transmitter, when he noticed that when the tape of the machine was played at high speed, it gave off a noise resembling spoken words. After experimenting with a needle attached to the diaphragm of a telephone receiver to prick paper tape to record a message, his idea evolved to using a stylus on a tinfoil cylinder.
File:Thomas Edison.jpg|link=Thomas Edison (nonfiction)|1877: [[Thomas Edison (nonfiction)|Thomas Edison)]] files for a patent on the phonograph. The idea came to him while working on a telegraph transmitter, when he noticed that when the tape of the machine was played at high speed, it gave off a noise resembling spoken words. After experimenting with a needle attached to the diaphragm of a telephone receiver to prick paper tape to record a message, his idea evolved to using a stylus on a tinfoil cylinder.

Revision as of 11:36, 4 July 2019