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Thomas W. Stewart, a black man,
Source: D.2.N.I.N.E. -- Black Inventors
http://www.d2nine.com/inventor.htm
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Mathematical Olympiad Program - Wikipedia, the free encyclopedia
The Mathematical Olympiad Program or MOP is an intensive summer program held at University of Nebraska-Lincoln. The main purpose of MOP, held since 1974, is to select and train the six members of ...
en.wikipedia.org/wiki/Mathematical_Olympiad_Program |
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Biographies of famous inventors - what they invented for the world. ... Santorio invented several instruments: a wind gauge, a water current meter, the "pulsilogium" and a thermoscope (precursor to the thermometer). ... Stewart invented an improved mop, metal bender, and railroad crossing indicator.
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Olé for The Mop! ... On a trip to the US in the 1950's, he observed how the Americans washed the floor: with a flat mop that you wrang-out through rollers in a bucket. With the help of his friend, Emilio Bellvis, a mechanic at the Zaragoza air base, he set up the company Rodex and went into mop production.
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When?; Thomas Stewart invented the mop in 1893. Conditions were not as clean and healthy then as they are now. ... Where?; The mop was invented in Detroit, Michigan, a very large city. In the 1800's, cities were growing and people lived in crowded areas. It was difficult to keep things clean and harder to keep people healthy.
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You see, Lloyd P. Ray, a Black man, invented the dustpan. So he swept his pile of dirt over in the corner and left it there. He then decided to mop the floor, but the mop was gone. You see, Thomas W. Stewart, a Black man, invented the mop.
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