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Benjamin Franklin thought that slavery was "an atrocious debasement of human nature" and "a source of serious evils." In 1787, Franklin and Benjamin Rush helped write a new constitution for the Pennsylvania Society for Promoting the Abolition of Slavery, [264] and that same year Franklin became president of the organization. [265]
Pages in category "Inventions by Benjamin Franklin" The following 5 pages are in this category, out of 5 total. This list may not reflect recent changes. B.
Franklin invented the lightning rod, which goes down in history as the first practical electrical invention. Crane, Verner Winslow (1954). Benjamin Franklin and a Rising People. Little, Brown and Company. Finger, Stanley (2012). Doctor Franklin's Medicine. University of Pennsylvania Press. ISBN 978-0-8122-0191-8. Franklin, Benjamin (1751).
American scientist Benjamin Franklin showed that lightning was electrical by flying a kite and explained how Leyden jars work. 1780: Italian scientist Luigi Galvani discovered Galvanic action in living tissue. 1785
Benjamin Franklin invented wooden swim fins in 1717. [10] His original design consisted of 10-inch-long (250 mm) and 6-inch-wide (150 mm) palettes. Contrary to today's version of rubberized swim fins worn on the feet, Franklin's swim fins were originally intended for use on a person's hands.
Compound steam engine for marine use – invented by Benjamin Franklin Tibbetts in 1842; Canadian – the birch bark canoe was developed by First Nations in Canada [55] Electric car heater – invented by Thomas Ahearn in 1890 [7] Electric wheelchair – invented by George Klein in 1952 for World War II veterans [7]
The Franklin stove is a metal-lined fireplace named after Benjamin Franklin, who invented it in 1742. [1] It had a hollow baffle near the rear (to transfer more heat from the fire to a room's air) and relied on an "inverted siphon" to draw the fire's hot fumes around the baffle. [ 2 ]
Benjamin Franklin Drawing Electricity from the Sky, an artistic rendition of Franklin's kite experiment painted by Benjamin West, c. 1816 The BEP engraved the vignette Franklin and Electricity (c. 1860) which was used on the $10 National Bank Note from the 1860s to 1890s.
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