elementary treatise on nautral philosophy1873 |
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Página 5
... suppose space to be filled , and whose vibrations serve for the propagation of light and heat . This work of synthesis , however , has as yet made little progress , though these last few years have been marked by very successful efforts ...
... suppose space to be filled , and whose vibrations serve for the propagation of light and heat . This work of synthesis , however , has as yet made little progress , though these last few years have been marked by very successful efforts ...
Página 15
... suppose distributed two and two at equal distances from the middle point , have a resultant acting at this point , equal and opposite to the force P ' . It will also be found that P ' is equal to the sum of the two weights P together ...
... suppose distributed two and two at equal distances from the middle point , have a resultant acting at this point , equal and opposite to the force P ' . It will also be found that P ' is equal to the sum of the two weights P together ...
Página 34
... suppose lines or surfaces composed of elements possess- ing weight ; and the results thus obtained can be utilized in investi- gating the centres of gravity of real bodies . Consider , for example , a triangular prism . It can be ...
... suppose lines or surfaces composed of elements possess- ing weight ; and the results thus obtained can be utilized in investi- gating the centres of gravity of real bodies . Consider , for example , a triangular prism . It can be ...
Página 44
... Suppose the wheel to be turning in the direction indicated by the arrow . It is obvious that as soon as the tooth of the cam has passed the end of the lever the latter will fly to the left , and therefore the upper end will fly to the ...
... Suppose the wheel to be turning in the direction indicated by the arrow . It is obvious that as soon as the tooth of the cam has passed the end of the lever the latter will fly to the left , and therefore the upper end will fly to the ...
Página 45
... suppose the action of the force suddenly to cease , the motion will become uniform , and the velocity during this uniform motion will serve as a measure of the velocity which existed at the instant when the action of the force ceased ...
... suppose the action of the force suddenly to cease , the motion will become uniform , and the velocity during this uniform motion will serve as a measure of the velocity which existed at the instant when the action of the force ceased ...
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...