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1900 Fly swatter. A fly swatter is a hand-held device for swatting and killing flies and other insects. The first modern fly-destruction device was invented in 1900 by Robert R. Montgomery, an entrepreneur based in Decatur, Illinois. [75] On January 9, 1900, Montgomery was issued U.S. patent #640,790 for the "Fly-Killer". [76] 1900 Thumbtack
The rights to the invention were sold for $400. [108] 1850 Dishwasher. The dishwasher cleans dishes, glassware, and eating utensils. The first dishwasher was a wooden one whereby a person would turn a handle to splash water on the dishware. It was invented in 1850 by Joel Houghton of Ogden, New York. The device was a failure. [109]
This can be illustrated by the index of total industrial production, which increased from 4.29 in 1790 to 1,975.00 in 1913, an increase of 460 times (base year 1850 – 100). [5] American colonies gained independence in 1783 just as profound changes in industrial production and coordination were beginning to shift production from artisans to ...
The Lower Paleolithic period lasted over 3 million years, during which there many human-like species evolved including toward the end of this period, Homo sapiens.The original divergence between humans and chimpanzees occurred 13 (), however interbreeding continued until as recently as 4 Ma, with the first species clearly belonging to the human (and not chimpanzee) lineage being ...
With the invention of the cotton gin by Eli Whitney in 1794, American slaveholders had the means to make cotton production significantly more profitable. The era of King Cotton was underway by the early 1800s to such an extent that by the mid-19th century, southern slave plantations supplied 75% of the world's cotton.
The year 1900 in science and technology involved some significant events, listed below. Aeronautics. July 2 ...
From the first Apple computer to the COVID-19 vaccine, here are the most revolutionary inventions that were born in the U.S.A. in the past half-century.
1850–51 – William Thomson, 1st Baron Kelvin & Rudolf Clausius: Second law of thermodynamics; 1857 – Rudolf Clausius: Introduced translational, rotational, and vibrational molecular motions; 1857 – Rudolf Clausius: Introduced the concept of mean free path; 1860 – James Clerk Maxwell: Introduced statistical mechanics with the Maxwell ...