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Play-Doh was originally called Rainbow Modeling Compound and used to clean wallpaper. A NJ nursery school teacher found it was fun to use as a toy.
The theory was developed further by Frank E Bird in 1966 based on the analysis of 1.7 million accident reports from almost 300 companies. He produced an amended triangle that showed a relationship of one serious injury accident to 10 minor injury (first aid only) accidents, to 30 damage causing accidents, to 600 near misses.
1974: The lithium-ion battery is invented by M. Stanley Whittingham, and further developed in the 1980s and 1990s by John B. Goodenough, Rachid Yazami and Akira Yoshino. It has impacted modern consumer electronics and electric vehicles. [508] 1974: The Rubik's cube is invented by Ernő Rubik which went on to be the best selling puzzle ever. [509]
A sub commander in tactical conditions must exercise discretion when using his periscope, since it creates an observable wake and may be detectable to radar, giving away the sub's position. The invention of the collapsible periscope for use in submarine warfare is credited to Simon Lake in 1902, who called his device the omniscope or skalomniscope.
The true story is that it was invented utterly by accident one fateful day more than 70 years ago, when a Raytheon engineer named Percy Spencer was testing a military-grade magnetron and suddenly ...
However, discoveries and inventions are inextricably related, in that discoveries lead to inventions, and inventions facilitate discoveries; and since the same phenomenon of multiplicity occurs in relation to both discoveries and inventions, this article lists both multiple discoveries and multiple inventions.
Webster Wagner (1817–1882) died in a train accident, crushed between two of the railway sleeper cars he had invented. [43] Henri Thuile (died 1900), inventor of the large high-speed Thuile steam locomotive, died during a test run between Chartres and Orléans.
April 10 – Cecilia Grierson (born 1859), Argentine physician and reformer. April 21 – Carsten Borchgrevink (born 1864), Norwegian Antarctic explorer. July 4 – Marie Curie (born 1867), Polish-born French physicist. [11] October 17 – Santiago Ramón y Cajal (born 1852), Spanish winner of the Nobel Prize in Physiology or Medicine.