The book Elements of Chemistry: Theoreetical And Practical was written by author William Allen Miller , Wi Allen Miller Here you can read free online of Elements of Chemistry: Theoreetical And Practical book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Elements of Chemistry: Theoreetical And Practical a good or bad book?
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The thicker the plate the greater is its liability to fracture. Sudden cooling, by inducing unequal contraction, has a similar effect. A knowledge of these effects of expansion explains why the wires of certain metals, such as iron and platinum, may be soldered into glass ; whilst other metals, such as silver, gold, or copper, separate and crack out as the joint cook. The expansion of iron or of pla- tinum differs from that of glass by a very small amount, whereas other metals vary from it grea...tly, and contract far more in cooling. {137) A remarkable exception to the law of contraction by the removal of heat, exists in the case of water. Water follows the regular law until it reaches a point between 39® and 40° F.; then, instead of contracting, it begins to expand, and continues to do so till it reaches the freezing point. About 39*^ it is at its point of N 2 Digitized by VjOOQ IC 180 ANOMiJLOUS EXPANSION OF WATER. greatest density^ and just before it freezes it occupies a space as great as it did at 48°.
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