elementary treatise on nautral philosophy1873 |
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Página 5
... called the physical cause of the particular phenomena which it includes . A phenomenon is said to be explained or accounted for , or traced to its cause , when we show that it is contained in the enunciation of a known law . Thus , when ...
... called the physical cause of the particular phenomena which it includes . A phenomenon is said to be explained or accounted for , or traced to its cause , when we show that it is contained in the enunciation of a known law . Thus , when ...
Página 11
... called the point of application of the force . It tends , in virtue of this action , to move in a certain direction , which is called the direction of the force , and which can be represented geometrically by a straight line drawn from ...
... called the point of application of the force . It tends , in virtue of this action , to move in a certain direction , which is called the direction of the force , and which can be represented geometrically by a straight line drawn from ...
Página 12
... called the resultant of the given forces , and they are called its components . Thus , for example , a vessel descending a river , whether propelled by steam or wind , provided its motion be rectilinear , is really urged forward by a ...
... called the resultant of the given forces , and they are called its components . Thus , for example , a vessel descending a river , whether propelled by steam or wind , provided its motion be rectilinear , is really urged forward by a ...
Página 16
... called a couple . It cannot be equilibrated or replaced by a single force , but obviously tends to produce a motion ... called the arm of the couple . The product of one of the two equal forces by the arm is called the moment of the ...
... called a couple . It cannot be equilibrated or replaced by a single force , but obviously tends to produce a motion ... called the arm of the couple . The product of one of the two equal forces by the arm is called the moment of the ...
Página 18
... called leeway . 17. Work done by a Force . In the different operations to which forces are applied , such as the raising of burdens , the compressing , piercing , and pulverizing of solid bodies , it is clear that it is always necessary ...
... called leeway . 17. Work done by a Force . In the different operations to which forces are applied , such as the raising of burdens , the compressing , piercing , and pulverizing of solid bodies , it is clear that it is always necessary ...
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...