Haswell, Charles Haynes, 1809- [from old catalog] · New York, Harper & brothers · leaf 266
nd their difference will give the curved surface. LUNE. Definition.—The space between the intersecting arcs of two eccentric circles. To Compute th.e Area of a Lune-Fig. 39.Rule.—Ascertain the areas of the two segments from which thelune is formed, and their difference will givethe area.… … Fig. 39.
Engineering · Mechanical engineering
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