MAKE A MEME View Large Image Newton's reflecting quadrant.png Drawing of Isaac Newton's reflecting quadrant often called sextant Memoirs of the Life Writings and Discoveries of Sir Isaac Newton 1855 David Brewster Quadrants instrument PD-old
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Keywords: Newton's reflecting quadrant.png Drawing of Isaac Newton's reflecting quadrant often called sextant Memoirs of the Life Writings and Discoveries of Sir Isaac Newton 1855 David Brewster Quadrants instrument PD-old
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