Read Annual Reports of the State Inspectors of Mines for the First and Second Districts of the State of West Virginia: For the Year Ended June 30, 1891 (Classic Reprint)

Annual Reports of the State Inspectors of Mines for the First and Second Districts of the State of West Virginia: For the Year Ended June 30, 1891 (Classic Reprint)

West Virginia Department of Mines

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Description:Excerpt from Annual Reports of the State Inspectors of Mines for the First and Second Districts of the State of West Virginia: For the Year Ended June 30, 1891 The air, like all other material bodies, if not provoked to action by some force, would remain in a state of rest, because of its equal pressure in every direction But no sooner is its pressure increased or diminished in any particular locality, than it will immediately spring into action and rush forward with the same degree of force that was applied to disturb or destroy its equilibrium. This fact can be easily demonstrated in an ordinary cottage fire grate, where the fire heats the air and causes it to expand, and therefore lessens its density below the density of the cold air in the room, in consequence of which the cold air rushes forward to the fire in pursuit of the hot air ascending the chimney. In this illustration is plainly seen the principle of furnace ventilation. The density of air is fixed at 100, and this is regarded by chem ists as the standard of comparison when treating on the specific gravities of gases and vapors. Air is about 833 times lighter than water and times lighter than mercury. The density of air is not uniform throughout its entire volume, but diminishes as it is more distant from the earth's surface. A change of atmospheric density is indicative of heat or cold, and to the coal miner it means a principle which sometimes involves life or death. These changes are made known with an instrument called a barometer. 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.We have made it easy for you to find a PDF Ebooks without any digging. And by having access to our ebooks online or by storing it on your computer, you have convenient answers with Annual Reports of the State Inspectors of Mines for the First and Second Districts of the State of West Virginia: For the Year Ended June 30, 1891 (Classic Reprint). To get started finding Annual Reports of the State Inspectors of Mines for the First and Second Districts of the State of West Virginia: For the Year Ended June 30, 1891 (Classic Reprint), you are right to find our website which has a comprehensive collection of manuals listed.
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Description: Excerpt from Annual Reports of the State Inspectors of Mines for the First and Second Districts of the State of West Virginia: For the Year Ended June 30, 1891 The air, like all other material bodies, if not provoked to action by some force, would remain in a state of rest, because of its equal pressure in every direction But no sooner is its pressure increased or diminished in any particular locality, than it will immediately spring into action and rush forward with the same degree of force that was applied to disturb or destroy its equilibrium. This fact can be easily demonstrated in an ordinary cottage fire grate, where the fire heats the air and causes it to expand, and therefore lessens its density below the density of the cold air in the room, in consequence of which the cold air rushes forward to the fire in pursuit of the hot air ascending the chimney. In this illustration is plainly seen the principle of furnace ventilation. The density of air is fixed at 100, and this is regarded by chem ists as the standard of comparison when treating on the specific gravities of gases and vapors. Air is about 833 times lighter than water and times lighter than mercury. The density of air is not uniform throughout its entire volume, but diminishes as it is more distant from the earth's surface. A change of atmospheric density is indicative of heat or cold, and to the coal miner it means a principle which sometimes involves life or death. These changes are made known with an instrument called a barometer. 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.We have made it easy for you to find a PDF Ebooks without any digging. And by having access to our ebooks online or by storing it on your computer, you have convenient answers with Annual Reports of the State Inspectors of Mines for the First and Second Districts of the State of West Virginia: For the Year Ended June 30, 1891 (Classic Reprint). To get started finding Annual Reports of the State Inspectors of Mines for the First and Second Districts of the State of West Virginia: For the Year Ended June 30, 1891 (Classic Reprint), you are right to find our website which has a comprehensive collection of manuals listed.
Our library is the biggest of these that have literally hundreds of thousands of different products represented.

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Annual Reports of the State Inspectors of Mines for the First and Second Districts of the State of West Virginia: For the Year Ended June 30, 1891 (Classic Reprint)

Annual Reports of the State Inspectors of Mines for the First and Second Districts of the State of West Virginia: For the Year Ended June 30, 1891 (Classic Reprint)

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