. Biographies of distinguished scientific men. Scientists. EMISSION THEORY. 233 ago traces of the former in the writings of Empedocles. Among the moderns I can cite among its adherents, Kep- ler, Newton, and Laplace. The system of waves does not reckon less illustrious partisans; Aristotle, Descartes, Hooke, Huyghens, Euler, adopted it. Such names on either side render a choice difficult, if in a matter of sci- the reader to a very simple machine, represented in the annexed figure contrived b}' the translator, which exhibits a set of white balls, repre-. senting the molecules of ether: these a
. Biographies of distinguished scientific men. Scientists. EMISSION THEORY. 233 ago traces of the former in the writings of Empedocles. Among the moderns I can cite among its adherents, Kep- ler, Newton, and Laplace. The system of waves does not reckon less illustrious partisans; Aristotle, Descartes, Hooke, Huyghens, Euler, adopted it. Such names on either side render a choice difficult, if in a matter of sci- the reader to a very simple machine, represented in the annexed figure contrived b}' the translator, which exhibits a set of white balls, repre-. senting the molecules of ether: these are attached to rods, which are moved on turning the handle by cranks at their lower end, so arranged that each ball is in succession raised or lowered nearly in a straight line; so that they follow each other in the form of a wave. When the bar supporting the rings through which the rods pass, is lowered, the balls no longer move up and down in straight lines, but describe each a kind of oval curve, which becomes more rounded the lower the bar is placed. In the former case the machine represents a wave with plain vibrations, in the latter, with elliptic or circular 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 Arago, F. (François), 1786-1853; Smyth, W. H. (William Henry), 1788-1865; Powell, Baden, 1796-1860; Grant, Robert, 1814-1892; Fairbairn, William, Sir, 1789-1874. Boston, Ticknor and Fields
Size: 1463px × 1707px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1850, bookpublisherbosto, bookyear1859
