The London, Edinburgh and Dublin Philosophical Magazine and Journal of ScienceTaylor & Francis, 1852 |
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Page 2
... direction enabled us to place the instrument so that the sun's rays always fell perpendicularly upon the blackened upper surface . Of this we convinced ourselves by fixing a pasteboard disc ( e ) of the same diameter as the cylindrical ...
... direction enabled us to place the instrument so that the sun's rays always fell perpendicularly upon the blackened upper surface . Of this we convinced ourselves by fixing a pasteboard disc ( e ) of the same diameter as the cylindrical ...
Page 37
... direction being equal to the vis viva of the opposite direction . When two particles run together and form one , as in chemical action , which I have represented by the symbol ++ I suppose that the plus spherical orbs combine to form ...
... direction being equal to the vis viva of the opposite direction . When two particles run together and form one , as in chemical action , which I have represented by the symbol ++ I suppose that the plus spherical orbs combine to form ...
Page 44
... direction ; therefore it would be as correct to say that heat is absorbed , as to say it is produced by motion . 2. That the theory of heat being a subtle fluid gives no ex- planation of expansion ; for we see that this fluid should ...
... direction ; therefore it would be as correct to say that heat is absorbed , as to say it is produced by motion . 2. That the theory of heat being a subtle fluid gives no ex- planation of expansion ; for we see that this fluid should ...
Page 45
... direction only ; no change in the conditions of matter or motion takes place without an opposite one being produced at the same time ; hence what is called cause and effect , action and reaction , & c . , one being always accompanied by ...
... direction only ; no change in the conditions of matter or motion takes place without an opposite one being produced at the same time ; hence what is called cause and effect , action and reaction , & c . , one being always accompanied by ...
Page 50
... direction of the arrows at A , that is , when iron or oxygen contracts , expansion or heat in other bodies is the consequence . Now why not extend the same principle to the case where O and I approximate , or the particles move in the ...
... direction of the arrows at A , that is , when iron or oxygen contracts , expansion or heat in other bodies is the consequence . Now why not extend the same principle to the case where O and I approximate , or the particles move in the ...
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Common terms and phrases
action æther alcohol alizarine ammonia angle antimony appear atoms axis berberine bismuth bodies carbonic acid cause cells centre chemical cilia circuit Cloudy colour combination compound conductor contained copper corresponding crystals decomposition deflection degree diameter direction distance diurnal motion effect electromotive force equal equation evectant exhibited existence expansion experiments galvanometer glass grains homogeneous functions hydrogen inch intensity iodine iron latter Leyden battery light lines of force liquid magnetic force means metal motion needle negative object observed obtained optic axes oxide oxygen paper particles pass phænomena phænomenon Phil plane plate platinum polarizing poles portion positive present prism produced quantity of electricity quantity of heat quinine rain rays remarkable retina rubian Sandwick seen silver solution spiral stereoscope substance sulphuric acid supposed surface temperature theory thermo-electric thermometer thickness tion tourmaline tricity tube voltaic zinc
Popular passages
Page 66 - How charming is divine Philosophy ! Not harsh and crabbed, as dull fools suppose, But musical as is Apollo's lute, And a perpetual feast of nectared sweets, Where no crude surfeit reigns.
Page 304 - Within a finite period of time past, the earth must have been, and within a finite period of time to come, the earth must again be, unfit for the habitation of man as at present constituted, unless operations have been, or are to be performed, which are impossible under the laws to which the known operations going on at present in the material world are subject.
Page 409 - It has never been resolved into simpler or elementary influences, and may perhaps best be conceived of as an axis of power having contrary forces, exactly equal in amount, in contrary directions.
Page 243 - What would be the visual effect of simultaneously presenting to each eye, instead of the object itself, its projection on a plane surface as it appears to that eye...
Page 134 - According to it, the equivalent weights of bodies are simply those quantities of them which contain equal quantities of electricity, or have naturally equal electric powers ; it being the ELECTRICITY which determines the equivalent number, because it determines the combining force. Or, if we adopt the atomic theory or phraseology, then the atoms of bodies which are equivalents to each other in their ordinary chemical action, have equal quantities of electricity naturally associated with them.
Page 304 - There is at present in the material world a universal tendency to the dissipation of mechanical energy.
Page 9 - When equal quantities of mechanical effect are produced by any means whatever from purely thermal sources, or lost in purely thermal effects, equal quantities of heat are put out of existence or are generated.
Page 265 - It may be said, this indistinctness and duplicity is not attended to, because the eyes shifting continually from point to point, every part of the object is successively rendered distinct ; and the perception of the object is not the consequence of a single glance, during which only a small part of it is seen distinctly, but is formed from a comparison of all the pictures successively seen while the eyes are changing from one point of the object to another. All this...
Page 539 - And in order that my invention may be most fully understood, and readily carried into effect, I will proceed to describe the means pursued by me in carrying out my invention.
Page 333 - ... in direct proportion to the absolute quantity of electricity which passes. 378. Hence arises still further confirmation, if any were required, of the identity of common and voltaic electricity...