A system of natural philosophy, designed for the use of schools and academies (1845)
Moffat, J[ohn] M. [from old catalog] · Philadelphia, E. C. Biddle · leaf 301
Wedgwood unite the indications of his scale to those of thecommon thermometer ? What reliance is to be placed upon it as an ab-solute measure of temperature ? To what practical purpose may it beusefully applied ? On what principle have pyrometers generally beenconstructed ? * For descriptions and… … METALLIC PYROMETERS. 299 expansion of a rod of plantina, made to move an index over adial-plate divided into 360 degrees, each equal to 7 degrees ofFahrenheit. He published an account of experiments made bymeans of his pyrometer, the result of which may be subjoined, asbeing probably the most exact…
Physics
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