Stewart, Balfour, 1828-1887 · Toronto : James Campbell · leaf 73
gets larger in all directions. To proveto you that this is the case let us heat a solid, a Uquid,and a gas. 64 SCIENCE PRIMERS. [heated * Experiment 36.—Let us take (fig. 24) a longmetallic rod held tightly by a screw at one end, b.The other end is, however, free to expand, and indoing so it will… … Fig. 24. tion, and rise up towards the top. Now let us placetwo or three lamps beneath the rod and heat it, andwe shall find that the rod expands, and pressesagainst the pointer so that it rises. If the lamps bewithdrawn, the rod will cool, and in the course of afew minutes the pointer will have…
Physics
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