A text book of physics, for the use of students of science and engineering (1918)
Duncan, John, d. 1941, Starling, Sydney George, 1873- · London Macmillan · leaf 445
molecules have different directions, but all can be resolved into com-ponents parallel to the edgesof the cube. If u-f and w22have the same relation to ufand w22 respectively that ft2has to w2, as explained above,and if V2 has the same relationto V2, i.e. V2 is the mean ofthe squares of the actual… … O ru L X Fig. 409.—Component velocities of a molecule. W- ■U-. ■U0 lv2. 1 -2 3V (2) Hence, in the case of a centimetre cube containing n molecules ofa gas moving in all directions, we have from (1) and (2) p=±nmSf2 dynes per sq. cm (3) If the cube has a volume v, each cubic centimetre containing…
Physics
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