Template:Selected anniversaries/February 13: Difference between revisions

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||John Louis Emil Dreyer (b. February 13, 1852) was a Danish-Irish astronomer.
||John Louis Emil Dreyer (b. February 13, 1852) was a Danish-Irish astronomer.
||Dugald Caleb Jackson (b. February 13, 1865) was an American electrical engineer. He received the IEEE Edison Medal for "outstanding and inspiring leadership in engineering education and in the field of generation and distribution of electric power".


||1880 – Thomas Edison observes the Edison effect.
||1880 – Thomas Edison observes the Edison effect.

Revision as of 10:01, 29 November 2017