. The Utah Farmer : Devoted to Agriculture in the Rocky Mountain Region. 9 JO iz/voov 2 fin +Flo. 10. ferent sizes, hut with tubes of thesame size. It is evident that whensubjecting both thermometers to thesame additional amount of heat themercury will rise higher in the tubehaving the larger bulb. The workmanmakes his bulb of such size as willfit the stem. A good length of ther-mometer for ordinary use is 10 or 12inches. The selection of a suitable liquid isvery important. Either mercury oralcohol is generally used. It may beobserved that the liquid in some ther-mometers is wine color; is suc
. The Utah Farmer : Devoted to Agriculture in the Rocky Mountain Region. 9 JO iz/voov 2 fin +Flo. 10. ferent sizes, hut with tubes of thesame size. It is evident that whensubjecting both thermometers to thesame additional amount of heat themercury will rise higher in the tubehaving the larger bulb. The workmanmakes his bulb of such size as willfit the stem. A good length of ther-mometer for ordinary use is 10 or 12inches. The selection of a suitable liquid isvery important. Either mercury oralcohol is generally used. It may beobserved that the liquid in some ther-mometers is wine color; is such casesthe liquid used is alcohol colored witha dye, which after long use maysettle to the bulb end, leaving the topof the column quite colorless. Theessentials in the choice of liquids arethat expansion of the liquid be muchgreat than the glass, that it shall notdistil in the upper part of the stem,that its surface tension be small, andthat it shall have low specific Thermometer Scale. In the construction of a ther-mometer the scale is made last andafter
Size: 2206px × 1132px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectagriculture, bookyear
