Chemistry

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Excerpt from Chemistry: An Exact Mechanical Philosophy The capacity for heat of an elementary substance varies inversely with the atomic weight, so that if quantities of different substances be taken in the proportion of their atomic weights the resulting specific heats come out very nearly equal. The specific heat of a body denotes the amount of heat required to raise the temperature 1° C. (at the standard temperature), compared with that required for an equal weight of water. That iron, for instance, has a greater capacity for heat than copper or lead is shown by the follow, ing experiment: If three balls of the different metals are heated to the same temperature (by immersing them in hot oil) and then placed on a suspended cake of bees-wax they will melt their way through at different rates, the iron ball first, the copper next, and the lead last. Water is accepted, as the standard for specific heat as it possesses a greater capacity for heat than any other substance. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.