Grant, George B. (George Barnard), 1849-1917 · Boston, Grant gear works, incorporated · leaf 76
Conic sections Fig, 121, … The ellipse Fig, 122. method is very accurate, and has no failingposition. Another valuable property of the ellipse isthat if the line pah be so drawn that the dis-tance pa is equal to BG, and pb to AC, thepoint p will be upon the curve if the points aand b are upon the axes. The curvature of the…
Gearing
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