The Elements of Laboratory Work a Course of Natural Science
The book The Elements of Laboratory Work a Course of Natural Science was written by author Alfred George Earl Here you can read free online of The Elements of Laboratory Work a Course of Natural Science book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is The Elements of Laboratory Work a Course of Natural Science a good or bad book?
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With the arrange- ment here shown (No. 2, fig. 19) of a string passing over a pulley A and through a hole in the ground and greased plate P, fitting against the ground edges of the vessel V, the varying quantities of liquid added to v will be found to be balanced by proportional quantities of matter at (1) B (2) Pig. 19. 62 ELEMENTS OF LABORATORY WORK the other end (b) of the string. If the two portions of the string are vertical, or at the same angle with the vertical, equal quantities of matt...er at each end counterpoise — that is, the plate and the liquid will be equal to the quantity of matter a't b. There is, therefore, no vertical support to the liquid from the sides of the vessel. If we now immerse a thin plate in a liquid, and weigh it while immersed, as if its density were being ascertained, it will be found that it is counteipoised by the same quantity of matter at all depths. The next observation is that the pressure at the bottom of a vessel depends in no way upon the shape of the vessel,'or the .-i F Fig.
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