Young, George, jr, Baxter, Hubert Eugene, joint author · New York, Macmillan · leaf 163
of contra-fiexure, i.e. one in which the direction of curvature changesperiodically.. It will be noticed that as the curve approachesthe axis, its curvature becomes quite flat while the sharpestpoint is farthest from the axis. At the axis, the upper and lowercurves have a common tangent. Where… … In the figure, the distances 0-1, 1-2, 2-3, etc., are equal, andeach is equal to 1/24 of the circumference of the circle from whichthe ordinates are derived. Flatter or steeper sine curves couldbe drawn by increasing or decreasing the ratio between 0-1, 1 -2,etc., and 0-1, l-2, etc. All such sine…
Geometry, Descriptive
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