. The Ontario high school physics. ther methods of calculating thenumber of molecules, and taking the aveiage of them all he finds1 of gas at ordinary pressure and temperaturecontains x 10^ Kelvin has also calculated in several ways the size ofmolecules, and he gives the following illustration. Imagine a rain-drop, or a globe of glass aslarge as a pea, to be magnified upto the size of the earth, each con-stituent molecule being magnifiedin the same proportion. The magni-fied structure would be morecoarse-grained than a heap ofsms^ll shot, but probably lesscoarse-giaine
. The Ontario high school physics. ther methods of calculating thenumber of molecules, and taking the aveiage of them all he finds1 of gas at ordinary pressure and temperaturecontains x 10^ Kelvin has also calculated in several ways the size ofmolecules, and he gives the following illustration. Imagine a rain-drop, or a globe of glass aslarge as a pea, to be magnified upto the size of the earth, each con-stituent molecule being magnifiedin the same proportion. The magni-fied structure would be morecoarse-grained than a heap ofsms^ll shot, but probably lesscoarse-giained than a heap ofcricket balls. 168. Nature of the tlie discussion given above,molecules have been treated assimple bits of matter, like grains Sir Joseph Thomson. Born in Manchester, p wlio.;if in a bncbpl niPiQiirp1856. Cavendish Professor of Experimental Ol Wlieat 111 a UUSIiei meabUie,Physics at Cambridge University. England, ^j^^^ J^ reaSOnS haVB been given for believing that they are in motion. The view ordinarily. NATURE OF THE MOLECULE I49 held has been that a conipound body is made up of molecules,and that each molecule can be broken up into elementaryatoms (§ 147). But in recent years the investigations of various physicists,the most distinguished of whom is Sir Joseph Thomson, haveled to the belief that the atom itself is a complex to this theory the atom of a substance has a certainamount of positive electricity as its nucleus, and about this alarge number of very minute negatively-charged corpuscles orelectrons revolve. Indeed the construction of the atom hasbeen compared to that of our solar system, which has the sunas its centre and the planets revolving about it. Though theevidence in favour of some such view is undisputed, the theoryis at present in a speculative stage and need not be consideredfurther in a book like this. CHAPTER XVII Phenomena of. Surface Tension and Capillarity 169. Forces at the Surface of a Liquid. water
Size: 1454px × 1718px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublishe, booksubjectphysics
