A Natural Philosphy Embracing the Most Recent Discoveries in the Various Branch
A Natural Philosphy Embracing the Most Recent Discoveries in the Various Branch
G P George Payn Quackenbos
The book A Natural Philosphy Embracing the Most Recent Discoveries in the Various Branch was written by author G P George Payn Quackenbos Here you can read free online of A Natural Philosphy Embracing the Most Recent Discoveries in the Various Branch book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is A Natural Philosphy Embracing the Most Recent Discoveries in the Various Branch a good or bad book?
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Name the three principal scales, and tell where each is used. What are the freezing-point and the boiling-point respectively called in Fahrenheit's scale ? What, in Reaumur's scale ? In the Centigrade scale ? How are the different scales indi- cated ? 545. When were thermometers first used ? To whom does the honor of their invention belong? What liquid has superseded all others in the thermometer ? Who THE DIFFERENTIAL THERMOMETER. 215 represented in Fig. 217, measures minute dif- ferences of t...emperature. It consists of a long glass tube, bent twice at right an- gles, somewhat in the form of the letter U. One arm is furnished with a scale of 100 degrees, and each terminates in a bulb. The tube contains a small quantity of sulphu- ric acid, colored red, and so disposed that when both bulbs are of the same temperature it stands at on the scale. Let either bulb be heated ever so little more than the other, and the expansion of the air within will drive the liquid down and cause it to ascend the opposite arm to a distance measured by the scale.
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