. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. BOOMERANGS. 517 given. The direction of tiie axis of rotation is indicated hy g-ivin^ the projections of a line of constant length measured along it. The scale of these diagrams is about 1:1000.) The angular velocity (1) is in- creased by an increase of twist and by an increase of rounding; it also in- creases when cos 0 increases, where ft is the inclination of the plane of rota- tion to the horizontal. The curling to the left (2) is incre
. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. BOOMERANGS. 517 given. The direction of tiie axis of rotation is indicated hy g-ivin^ the projections of a line of constant length measured along it. The scale of these diagrams is about 1:1000.) The angular velocity (1) is in- creased by an increase of twist and by an increase of rounding; it also in- creases when cos 0 increases, where ft is the inclination of the plane of rota- tion to the horizontal. The curling to the left (2) is increased by an increase of twist, or of cos (^, and, in general, l^y an increase of rounding. Fig. 5.—Elevation through (' Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution. Board of Regents; United States National Museum. Report of the U. S. National Museum; Smithsonian Institution. Report of the Secretary. Washington : Smithsonian Institution
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