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John Lawrence PEARL was born 23 November 1936 in Reno, Nevada, USA
John Lawrence PEARL was the child of Archibald "Archie" PEARL and Eleanor "Ella" PALME and the grandchild of: (paternal) Henry Frederick PEARL and Amelia SMITH (maternal) Joseph PALME and Julia JANAKJohn Lawrence PEARL died 17 June 1952 in Reno, Nevada, USA.
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1936 Birth 23 November 1936
Reno, Nevada, USA
1940 - April - 1st electron microscope demonstrated (RCA), Philadelphia, Pennsylvania, USA
The microwave oven was invented accidentally in 1945 by Percy Spencer, a Raytheon engineer. While testing a magnetron, he noticed microwaves melted a candy bar in his pocket. Experimenting further, he discovered microwaves could cook food quickly. Raytheon patented the process, and by 1947, they built the first commercial microwave oven, called the 'Radarange.' Initially used in commercial settings, microwaves becomes affordable for home use by the 1960s and 1970s, revolutionizing cooking.
1952 Death 17 June 1952
Reno, Nevada, USA
He died at the age of 15.
Added: 10/13/2021 11:54:56 AM
- Updated: 10/13/2021 11:54:56 AM
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