. The Ontario high school physics. tn^^d Fia. 254.—Expansion ofball by heat. Fio. 255.—Expansion of rod by heat. illustration is unnecessary. If a brass ball (Fig. 254) whichcan just pass through a ring when cold is heated it will thenbe found to be too large to go through. If we heat a metalrod which is fixed at one end while the other is made to pressagainst the short arm of a bent lever(Fig. 255) an elongation of the rod isshown by a movement of the end ofthe long arm over a scale. When acompound bar, made by riveting to-gether strips of copper and iron () is heated uniformly it bend
. The Ontario high school physics. tn^^d Fia. 254.—Expansion ofball by heat. Fio. 255.—Expansion of rod by heat. illustration is unnecessary. If a brass ball (Fig. 254) whichcan just pass through a ring when cold is heated it will thenbe found to be too large to go through. If we heat a metalrod which is fixed at one end while the other is made to pressagainst the short arm of a bent lever(Fig. 255) an elongation of the rod isshown by a movement of the end ofthe long arm over a scale. When acompound bar, made by riveting to-gether strips of copper and iron () is heated uniformly it bends into the form of an arc of a circle with the copper on the convex side, because the copper 217
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishe, booksubjectphysics
