. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. 202 RECENT STUDIES IN GKAVITATION. distiinco between aiul the force (I M, Mj?'^, of course Cavendish's result gives (x, or, knowing- the attraction of a ))io- sphere on a ball, and knowing- thle recent study in gravitation is Professor Boys's beautiful form of the Cavendish experiment, a research which. Fig. 2.—Boys's apparatus. stands out as a model in l)eauty of design and in -exactness of execu- tion (tig. 2). But as Professor Boy
. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. 202 RECENT STUDIES IN GKAVITATION. distiinco between aiul the force (I M, Mj?'^, of course Cavendish's result gives (x, or, knowing- the attraction of a ))io- sphere on a ball, and knowing- thle recent study in gravitation is Professor Boys's beautiful form of the Cavendish experiment, a research which. Fig. 2.—Boys's apparatus. stands out as a model in l)eauty of design and in -exactness of execu- tion (tig. 2). But as Professor Boys has described his experiment already in this theater,'' it is not necessary for me to more than refer to it. It is enough to say that he made the great discovery, obvious, perhaps, %Yhen made, that the sensitiveness of the apparatus is increased by reducing- its dimensions. He therefore decreased the scale as far as was consistent with exact measurement of the parts of the appa- ratus, using a torsion rod, itself a mirror, only 2 inches long, gold balls, m i/i, only i inch in diameter, and attracting lead masses. M M, »Proc. Eoyal Institution, XIV, part 2, 1894, p. 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
Size: 1444px × 1731px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorsmithsonianinstitutio, bookcentury1800, bookdecade1840
