The book A Sophomore Course in Physical Measurements was written by author Elmer Reginald Drew Here you can read free online of A Sophomore Course in Physical Measurements book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is A Sophomore Course in Physical Measurements a good or bad book?
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) Having the brass tube unscrewed from the upper end of the fixed glass tube, so that the latter is open to the air, set the movable tube, pouring in more mercury if necessary, 28 VOLUMENOMETER. [14 so that the top of the column in the fixed tube is at the middle mark. See that the brass tube is empty except for a plug of cotton. Clean off the old grease from its end, and from the shoulder on the brass cap, smear a little fresh grease evenly on the screw-threads of the cap, and screw on the tub...e, making sure that it fits tightly against the shoulder. Readjust the open tube so that the edge of the meniscus in the closed tube is again at the mark. The volume now inclosed above the mercury is the volume Fto be determined. Read the position of the top of each column on the meter rod by means of a straight edge laid across its face, and from the difference in level and the barometer height, find the pressure/ on the inclosed air. (b) Raise the open tube, pouring in more mercury if neces- sary, until the mercury rises to the upper mark in the closed tube.
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