elementary treatise on nautral philosophy1873 |
Dentro del libro
Resultados 1-5 de 79
Página 20
... increase in its transmission through a machine . Practically , work is always diminished in its transmission through a machine , owing to friction . The work thus lost leaves an equiva- lent in the shape of heat ( see Chap . xxxii ...
... increase in its transmission through a machine . Practically , work is always diminished in its transmission through a machine , owing to friction . The work thus lost leaves an equiva- lent in the shape of heat ( see Chap . xxxii ...
Página 27
... increase the apparent contraction by the contraction of the envelope . This latter element varies according to the ... increases . Alcohol and ether are rather more compressible , and their compressibility ( unlike that of water ) ...
... increase the apparent contraction by the contraction of the envelope . This latter element varies according to the ... increases . Alcohol and ether are rather more compressible , and their compressibility ( unlike that of water ) ...
Página 30
... increases , and this increase serves to measure the force itself ; or the force may be measured by observing what weight must be suspended from the hook to produce the same effect . The spring - balance is another apparatus of the same ...
... increases , and this increase serves to measure the force itself ; or the force may be measured by observing what weight must be suspended from the hook to produce the same effect . The spring - balance is another apparatus of the same ...
Página 50
... increasing indefinitely , only increases towards a certain limit which it can never exceed ; and if a body be projected downwards with a velocity greater than this , its motion will be retarded . The resistance of the air , in fact , in ...
... increasing indefinitely , only increases towards a certain limit which it can never exceed ; and if a body be projected downwards with a velocity greater than this , its motion will be retarded . The resistance of the air , in fact , in ...
Página 53
... increase of velocity , just as velocity itself denotes the rate of increase of distance measured along the path described from a fixed point . 42. Proportionality of Acceleration to Force directly and to Mass inversely . The general law ...
... increase of velocity , just as velocity itself denotes the rate of increase of distance measured along the path described from a fixed point . 42. Proportionality of Acceleration to Force directly and to Mass inversely . The general law ...
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...