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Historians Robert Friedel and Paul Israel list inventors of incandescent lamps prior to Joseph Swan and Thomas Edison of General Electric. [4]: 91–93 They conclude that Edison's version was the first practical implementation, able to outstrip the others because of a combination of four factors: an effective incandescent material; a vacuum higher than other implementations which was achieved ...
By 1830, there were 3,775 black (including mixed-race) slaveholders in the South who owned a total of 12,760 slaves, which was a small percentage of a total of over two million slaves then held in the South. [ 5] 80% of the black slaveholders were located in Louisiana, South Carolina, Virginia and Maryland. However, The first "documented slave ...
Enabling Act of 1802, authorizing residents of the eastern portion of the Northwest Territory to form the state of Ohio. Missouri Compromise, 1820 federal statute enabling the admission of Missouri (a slave state) and Maine (a free state) into the Union. Toledo War, 1835–36 boundary dispute between Ohio and the adjoining Michigan Territory ...
Here’s the deal: For years, there’s been a popular theory in behavioral science research that people hit a kind of “happiness plateau” around the $75,000 a year threshold (or around ...
Foxconn sells to Asus, Dell, HP, and Apple. Flextronics (former Arima Computer Corporation notebook division) sells to HP. Clevo and Tongfang sell to different laptop manufacturers like Digital Storm, Eluktronics, Eurocom, Metabox, Sager, Schenker, System76, XMG, etc.
List of most massive black holes Host or black hole name Solar mass (Sun = 1 × 10 0) Notes (Theoretical limit) 2.7 × 10 11: This is the maximum mass of a black hole that models predict, at least for luminous accreting SMBHs. At around 10 10 M ☉, effects of both intense radiation and star formation in the accretion disc slow down black hole ...