Template:Are You Sure/April 18: Difference between revisions
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• ... that the '''[[1906 San Francisco earthquake (nonfiction)|1906 San Francisco earthquake]]''' struck the coast of Northern California at 5:12 a.m. on April 18 with an estimated moment magnitude of 7.9; that devastating fires soon broke out in the city and lasted for several days; and that as a result, up to 3,000 people died and over 80% of the city of San Francisco was destroyed? | • ... that the '''[[1906 San Francisco earthquake (nonfiction)|1906 San Francisco earthquake]]''' struck the coast of Northern California at 5:12 a.m. on April 18 with an estimated moment magnitude of 7.9; that devastating fires soon broke out in the city and lasted for several days; and that as a result, up to 3,000 people died and over 80% of the city of San Francisco was destroyed? | ||
• ... that mathematician '''Karl Mikhailovich Peterson (nonfiction)|Karl Mikhailovich Peterson]]''' gave, in his graduation dissertation (1853, but not published until later), an early formulation of the fundamental equations of the surface theory, now usually known as Gauss–Codazzi equations, sometimes Peterson–Codazzi equations? | |||
Revision as of 10:01, 18 April 2020
San Francisco Earthquake of 1906: Ruins in vicinity of Post and Grant Avenue, looking northeast.
• ... that the 1906 San Francisco earthquake struck the coast of Northern California at 5:12 a.m. on April 18 with an estimated moment magnitude of 7.9; that devastating fires soon broke out in the city and lasted for several days; and that as a result, up to 3,000 people died and over 80% of the city of San Francisco was destroyed?
• ... that mathematician Karl Mikhailovich Peterson (nonfiction)|Karl Mikhailovich Peterson]] gave, in his graduation dissertation (1853, but not published until later), an early formulation of the fundamental equations of the surface theory, now usually known as Gauss–Codazzi equations, sometimes Peterson–Codazzi equations?