I.C.S. Reference Library: A Series of Textbooks ..., Volumen271905 |
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airway anthracite arrangement atoms boilers bottom brake brake band breaker cage carbonic acid gas chute colliery combustion conical drum cubic feet cubic foot culm cylinder Davy lamp drum dump elevation empty cars engine equal example explosion factor of safety feet of air feet per minute feet per second firedamp flame force formula friction furnace gases head-frame hoist hoisting-engine horsepower hydrogen increased iron lamp length line shaft loaded cars located marsh-gas mine-car mines molecules motive column necessary nitroglycerine opening orifice oxygen pass piston plane port of entry pounds per square pressure per square pulley quantity of air railroad-tracks resistance revolutions per minute rope pulley rubbing surface safety-lamp screen sectional area sheave shown in Fig side slate slope specific gravity split spur-gear square feet square foot square inch steam temperature tipple total pressure velocity ventilating pressure volume water-gauge weight
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Página 7 - 9.2 197.0 1.0 113.4 127.0 198.0 56.0 92.0 207.0 7.0 24.0 55.0 Name. Mercury, * Molybdenum, Nickel, Niobium (Columbium, Cb.), Nitrogen, Osmium, Oxygen, Palladium, * Phosphorus, Platinum, Potassium, Rhodium, Rubidium, Ruthenium, Samarium, Scandium, •Selenium, * Silicon, Silver, Sodium, Strontium, * Sulphur, •Tantalum, •Tellurium, Terbium, Thallium, Thorium, •Tin, •Titanium, •Tungsten, •Uranium, Vanadium, Ytterbium, Yttrium, Zinc, Zirconium,
Página 53 - 890. Nitroglycerine is a heavy, oily liquid, formed by the action of a mixture of strong nitric and sulphuric acids upon glycerine. It is a chemical compound, and as such differs from most other explosives. The dissociation of atoms takes place instantaneously throughout its mass, and thus affords one of the most powerful explosives known.
Página 3 - w = weight of a body at a given distance above or below the surface; d = distance between the center of the earth and the center of the body; R = radius of the earth = 4,000 miles. Formula for weight when the body is below the surface,
Página 167 - that each section has a headline which is the same as the headline of the section to which the questions refer. No attempt should be made to answer any questions or to work any examples until the corresponding part of the text has been carefully studied.
Página 22 - temperature remaining the same, the volume of a given quantity of gas varies inversely as the pressure. The meaning of this is: If the volume of the gas is diminished to \, \, \, etc., of its former volume, the tension will be increased 2, 3, 5, etc., times, or, if the outside pressure be increased 2, 3, 5, etc., times, the volume of the gas will be diminished to
Página 10 - nearly. 3. If all of the hydrogen in example 2 were to unite with oxygen (in the proportion of two atoms of hydrogen to one atom of oxygen) to form water, what weight of water would be produced ? Ans.
Página 20 - sea-level will not weigh as much as a cubic foot at sea-level. This is proven conclusively by the fact that at a height of 3£ miles the mercurial column measures but 15 inches, indicating that half the weight of the entire atmosphere is below that. It is known that the height of the earth's
Página 2 - Law of Gravitation : The force of attraction by which one body tends to draw another body towards it is directly proportional to its mass, and inversely proportional to the square of the distance between their centers.
Página 23 - As a necessary consequence of Mariotte's law, it may be stated that the density of a gas varies directly as the pressure and inversely as the volume; that is, the density increases as the pressure increases, and decreases as the volume increases. This is evident, since if a gas has a tension of
Página 17 - The actual height of the mercury is a little less than 30 inches, and the actual weight of a cubic inch of distilled water is a little less than .03617 pound. When these considerations are taken into account, the average weight of the mercurial column at the level of the sea under normal