elementary treatise on nautral philosophy1873 |
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Página xiii
... Vapours and permanent gases . - Vapours at maximum density and tension , or saturated vapours . - Maximum density and tension depend on tempera- ture . - Effect of presence of gas or of another vapour . - Dalton's two laws . - Liquefac ...
... Vapours and permanent gases . - Vapours at maximum density and tension , or saturated vapours . - Maximum density and tension depend on tempera- ture . - Effect of presence of gas or of another vapour . - Dalton's two laws . - Liquefac ...
Página xiv
... vapour . - Influence of thickness of plate upon amount of absorption . - Connection between radiant heat and light . - Fluorescence and calor- escence .-- Selective emission and absorption . - Their equality . - Proof from reversal of ...
... vapour . - Influence of thickness of plate upon amount of absorption . - Connection between radiant heat and light . - Fluorescence and calor- escence .-- Selective emission and absorption . - Their equality . - Proof from reversal of ...
Página 22
... vapour . If the thermal conditions existing at the surface of the earth were to receive a notable change in either direction , some of the bodies which we habitually see in the liquid state would become either solids or vapours ...
... vapour . If the thermal conditions existing at the surface of the earth were to receive a notable change in either direction , some of the bodies which we habitually see in the liquid state would become either solids or vapours ...
Página 166
... vapour . The precise nature of the connection between this cause and the diurnal barometric oscillation has not , however , as yet been satisfactorily established . 114. Irregular Variations of the Barometer . - The height of the baro ...
... vapour . The precise nature of the connection between this cause and the diurnal barometric oscillation has not , however , as yet been satisfactorily established . 114. Irregular Variations of the Barometer . - The height of the baro ...
Página 167
... vapour which is liable to be condensed as its temperature falls . Cold winds , on the contrary , contain vapour which was taken up at a lower temperature than it now has , and is therefore far from a state of saturation . They are ...
... vapour which is liable to be condensed as its temperature falls . Cold winds , on the contrary , contain vapour which was taken up at a lower temperature than it now has , and is therefore far from a state of saturation . They are ...
Términos y frases comunes
acid action amount angle apparatus atmosphere atmospheric pressure axis barometer battery body Boyle's law called calorimeter carbonic acid centre of gravity circuit coil column compressed condensation conductor connected consists copper cylinder denote density diminished direction distance earth effect electricity electro-motive force employed equal equilibrium expansion experiment formula gases given glass globe Hence horizontal hygrometer inch increase instrument insulated latent heat length lens Leyden jar light liquid lower machine magnet means measured mercury metal millimetres mirror motion needle negative observed obtained opposite parallel particles passes pendulum piston placed plane plate pole portion position potential pressure produced proportional quantity ratio rays reflected refraction represented in Fig resistance result rotation side solid specific gravity specific heat steam substance sulphuric acid suppose surface telescope temperature tension thermometer tion tube vapour velocity vertical vessel vibrations volume weight wire zinc
Pasajes populares
Página 286 - Its banks and its bottom are of cold water, while its current is of warm. The Gulf of Mexico is its fountain, and its mouth is in the Arctic seas. It is the Gulf Stream. There is in the world no other such majestic flow of waters. Its current is more rapid than the Mississippi or the Amazon, and its volume more than a thousand times greater.
Página 499 - It is better, on this account, in graduating the bottle, to make two scratches as represented in the drawing, one at the top and the other at the bottom of the curve : this prevents any future mistake.
Página 437 - Q are related by р/с' = constant, where y is the ratio of specific heat at constant pressure to specific heat at constant volume, for compressible fluids.
Página 633 - Unlike sea water, brackish waters differ in quality, quantity, and composition not only from place to place, but also from time to time even at a given location.
Página 910 - R' P', SP, will have a constant ratio ; or the sines of the angles of incidence and refraction are in a constant ratio.
Página 218 - The resistance which is opposed to a pump rod in raising water, is ~equal to the weight of a column of water whose base is the area of the piston, and...
Página 315 - A GLACIER is AN IMPERFECT FLUID, OR A VISCOUS BODY. WHICH IS URGED DOWN SLOPES OF A CERTAIN INCLINATION BY THE MUTUAL PRESSURE OF ITS PARTS.
Página 9 - The principle of inertia is an abstract principle which must be considered as applicable to a single isolated particle. It may be enounced in the following terms: — An isolated 'material point cannot change its state, whether of rest or motion. That is to say, if it be at rest it will remain at rest; if it be in motion it will continue to move in the same direction and with the same velocity.
Página 92 - If a vessel full of water, closed on all sides, has two openings, the one a hundred times as large as the other, and if each be supplied with a piston which fits exactly, a man pushing the small piston will exert a force which will equilibrate that of a hundred men pushing the Pig. 49.— Pascal's Principle. piston which is a hundred times as large, and will overcome that of ninety-nine.
Página 71 - It is the curve which is traced by a point in the circumference of a circle which rolls along a straight line. The...