A textbook on mechanical and electrical engineering (1898)
International Correspondence Schools · Scranton : International Textbook Co., [1898-99] · leaf 481
nite figures, the expansionmay be considered in three ways, according to the con-ditions : 1st.—The expansion in one direction, as the elonga- 450 HEAT. tion of an iron bar; this is called linear expansion.2d.—Surface expansion, where the area is increased.3d.—Cubical expansion, where the increase… … Fig. 215. through the eye C, held in the post, and pressing against theshort arm of the indicator F. The rod is heated as shown,and its elongation causes the indicator to move along thearc D E. 1109. An illustration of surface expansion is affordednearly every day in machine shops, particularly in…
Electrical engineering · Mechanical engineering
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