A Treatise on Practical and Theoretical Mine VentilationJ. Wiley & Sons, 1904 - 141 sivua |
Kirjan sisältä
Tulokset 1 - 5 kokonaismäärästä 5
Sivu 2
... mercury thirty inches in height at sea - level . The temperature of the atmosphere is not the same through- out : it becomes colder as we ascend ; hence on the top of high mountains we find snow the year round . That air has weight may ...
... mercury thirty inches in height at sea - level . The temperature of the atmosphere is not the same through- out : it becomes colder as we ascend ; hence on the top of high mountains we find snow the year round . That air has weight may ...
Sivu 3
... mercury whose base is one inch square , and whose height is thirty inches , it must press down with a weight equal to the weight of the mercury of the above dimensions to balance it . The weight of this mercury is 14.7225 pounds , and ...
... mercury whose base is one inch square , and whose height is thirty inches , it must press down with a weight equal to the weight of the mercury of the above dimensions to balance it . The weight of this mercury is 14.7225 pounds , and ...
Sivu 19
... inches of mercury of the density due to 32 ° , a press- ure equal to 14.7 pounds per square inch ; but , when the pressure is one inch , it weighs only part of this , or 1.3253 pounds . To find the weight of a cubic foot of air at any ...
... inches of mercury of the density due to 32 ° , a press- ure equal to 14.7 pounds per square inch ; but , when the pressure is one inch , it weighs only part of this , or 1.3253 pounds . To find the weight of a cubic foot of air at any ...
Sivu 104
... in its simplest form consists of a tube , about thirty - four inches long , closed at the top . This tube is filled with mercury , then inverted in a vessel containing mercury . The atmospheric pressure on the vessel of mercury will force ...
... in its simplest form consists of a tube , about thirty - four inches long , closed at the top . This tube is filled with mercury , then inverted in a vessel containing mercury . The atmospheric pressure on the vessel of mercury will force ...
Sivu 105
Eugene Benjamin Wilson. mercury at freezing - point , m = co - efficient of ... in size as the atmosphere is lighter or heavier . This change in size ... inches of mercurial column . When the barometer rises , the ther- mometer ...
Eugene Benjamin Wilson. mercury at freezing - point , m = co - efficient of ... in size as the atmosphere is lighter or heavier . This change in size ... inches of mercurial column . When the barometer rises , the ther- mometer ...
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Yleiset termit ja lausekkeet
100 cubic feet air circulating air gave air in mines air passing air-column air-course air-current airway amount anemometer asphyxia atmosphere barometer brattice carbonic acid Clanny coal coal-dust Colliery column cubic foot cubic inches Davy Davy lamp diameter discharge districts double downcast drifts Engineering equal explosion feet of air feet per minute feet square fire-damp flame formula furnace gallery gases gauze hence horse-power inches of mercury inches water-gauge increased inflammable ksv2 length Manual marsh-gas measured mechanical ventilators Mechanics mercury method miners morocco motive-column Mueseler lamp multiplied number of revolutions oxygen perimeter piston pounds per square pressure per square pressure required proportional quan quantity of air regulators resistance revolutions per minute rubbing-surface safety-lamp sectional area shaft shutter smaller airway splitting square feet square foot Suppose temperature Text-book tion tity total pressure Treatise tube upcast velocity ventilating pressure volume of air water-gauge
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