The Nuttall Encyclopedia
natural philosopher; invented a 5 ft. reflecting telescope, and a quadrant which bears his name, though the honour of the invention has been assigned to others, Newton included (1682-1744).
The numerical value of hadley, john in Chaldean Numerology is: 1
The numerical value of hadley, john in Pythagorean Numerology is: 3
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"hadley, john." Definitions.net. STANDS4 LLC, 2017. Web. 22 Jun 2017. <http://www.definitions.net/definition/hadley, john>.