. Elementary physics and chemistry: second stage. Science. 46 ELEMENTARY PHYSICS AND CHEMISTRY. LESSON VII. HEAT AND TEMPERATURE. PRACTICAL WORK. Things required.—Funnel, pipette or glass tube ; india-rubber tubing to connect them and a clip. Tin canister and a can or beaker of about twice the diameter. Wide glass tubing or straight lamp glasses. Glass funnel. Corks and bent tubing as in Fig. 32. Thermometer. Balance and weights. Water. Mercury. What to do. Wafer-level.—Connect the neck of a large funnel with a glass tube by means of india-rubber tubing (Fig. 31). Pinch the tubing, and pour wa
. Elementary physics and chemistry: second stage. Science. 46 ELEMENTARY PHYSICS AND CHEMISTRY. LESSON VII. HEAT AND TEMPERATURE. PRACTICAL WORK. Things required.—Funnel, pipette or glass tube ; india-rubber tubing to connect them and a clip. Tin canister and a can or beaker of about twice the diameter. Wide glass tubing or straight lamp glasses. Glass funnel. Corks and bent tubing as in Fig. 32. Thermometer. Balance and weights. Water. Mercury. What to do. Wafer-level.—Connect the neck of a large funnel with a glass tube by means of india-rubber tubing (Fig. 31). Pinch the tubing, and pour water into the two glass vessels to different levels. Release the tubing, and notice that the water flows from the vessel in which the level was higher until the level is the same in each. There may be much more water in one vessel than in the other, but the flow stops when the level is the same in both vessels. Heat-level or temperature. —Y\}\ a tin canister about one-half full of warm (not hot) water, and place it in a larger canister or beaker about one-half full of cold water from the ordinary supply. Dip your fingers into the water in the two vessels every few minutes. After a short time you will find that each feels the same. The warm water becomes colder and the cold water becomes warmer, until they are both of the same temperature or heat level. Rise and fall of water-level.—Connect two pieces of wide glass tubing of the same diameter with an india-rubber tube,. Fig. 31.—Liquids flow from high to lower levels when they Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Gregory, R. A; Simmons, A. T. London: MacMillan
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