Laboratory manual in physics . eally quite the same as that indicatedby the gauge? Why? Explain why the pressureexerted by the hydraulic press is multiplied to suchan extent. Consult a reference book for a discussionof Pascals Law relative to liquid pressure. Name other appliances in which the principle ofthe hydraulic machine is made use of. EXPERIMENT No. 10 Question.— If the gas companywere to double the pressure onthe tank supplying the mains,what effect would it have on thevolume of the confined gas? Apparatus.— Boyles appara-tus; mercury; illuminating gas;barometer. Directions.— In the a
Laboratory manual in physics . eally quite the same as that indicatedby the gauge? Why? Explain why the pressureexerted by the hydraulic press is multiplied to suchan extent. Consult a reference book for a discussionof Pascals Law relative to liquid pressure. Name other appliances in which the principle ofthe hydraulic machine is made use of. EXPERIMENT No. 10 Question.— If the gas companywere to double the pressure onthe tank supplying the mains,what effect would it have on thevolume of the confined gas? Apparatus.— Boyles appara-tus; mercury; illuminating gas;barometer. Directions.— In the apparatusshown in the diagram the tube ais filled with illuminating the tube b until the mercurystands at the same level in bothtubes. Evidently the only pressurenow on the confined gas is that ofthe atmosphere, since the two mer-cury columns balance each much is this atmosphericpressure? To determine this readthe barometer. The barometer shows what lengthof mercury column is balanced by the 24 Laboratory Manual in Physics Record the volume of the confined gas. This volumemay be expressed in inches (or centimeters) since thediameter of the tube a is the same throughout. Alsorecord the pressure upon the gas. as indicated by thebarometer. This pressure is expressed in so manyinches (or centimeters) of mercury. Now double the pressure upon the gas by raisingthe tube b until the difference in level between thecolumns of mercury is equal to the reading of thebarometer. The pressure on the confined gas is nowtwo atmospheres. Record this together with thevolume of the gas. Results.—Tabulate in a neat form data obtained. Discussion.—What effect has doubling the pressureupon the volume of the confined gas? While performing this experiment would the resultsbe effected if the temperature of the room changedmaterially? Why? Robert Boyle first discovered this relationshipbetween pressure and volume of gas which you havejust proved, and other physicis
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