. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. 562 ANCIENT DESEMEKS (HI STEELYARDS. instead of tending to restore itself (as an oM-illatini*" l>alanee will), it tends to go farther, so that the side pressed down appears to grow heavier. Such behavior (calh'd "" upsetting" in English) is a grave fault, for. in oixler to weigh, it is necessary not only to shift the fuleruni hack and forth, hut. all the while, to take care that the har is horizontal. The Romans perfe
. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. 562 ANCIENT DESEMEKS (HI STEELYARDS. instead of tending to restore itself (as an oM-illatini*" l>alanee will), it tends to go farther, so that the side pressed down appears to grow heavier. Such behavior (calh'd "" upsetting" in English) is a grave fault, for. in oixler to weigh, it is necessary not only to shift the fuleruni hack and forth, hut. all the while, to take care that the har is horizontal. The Romans perfectly understood this fault. In saying this it is assumed that the halance of Clusiuni does not represent the Hrst in- vented form. It must, surelv. ha\'e had its forei'unn(M-s, which dt-. -Antiiiiinrium, Berlin. Reproduced from Yearbook of German ImperiMl .Xrclioolotficiil Institute, Vf)l. XIU, 1«<J«. One-third natural size. less resembled the (Termaii desemers in respect to the position of their point of support, and therefore shai'c^l their inconvenience. In order to use such a l)alance in retail ti'ade it was necessary to have one which would come hack to the position of equilil)rium. It is one thing to weigh a given thing or collection of things, which is almost all that our the friction remains just the same whatever the height of the fulcrum; for though the weight acts more nearly at right angles to the radius from the center of rotation to the center of gravity when they are closer together, yet the leverage is smaller in the same proportion. It is, therefore, generally better to rely upf)n optical means, such as a very long tongue, to show small departures from eijuilibrium, rather than to Ijriiigtlic center of gravity so near the axis of rotation tliat the friction can arrest the balance in any sensil)ly oblique position. But tbe most intolerable fault is to bave the center of gravity above the axis of rotation, so that there is a tendency to ";—
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