The London, Edinburgh and Dublin Philosophical Magazine and Journal of ScienceTaylor & Francis, 1852 |
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Page 2
... axis ; to permit of this , the screw ( c ) must not be made too fast . In the filling of the instrument great care must be taken that no air remains in the cylinder , as this would spread itself between the water and the upper metallic ...
... axis ; to permit of this , the screw ( c ) must not be made too fast . In the filling of the instrument great care must be taken that no air remains in the cylinder , as this would spread itself between the water and the upper metallic ...
Page 22
... axis of the ellipse being parallel to the line joining the two eyes . * Professor Wheatstone has , we believe , used two achromatic prisms , but they are not necessary . 5. The Double - Reflecting Stereoscope . In this form 22 Sir David ...
... axis of the ellipse being parallel to the line joining the two eyes . * Professor Wheatstone has , we believe , used two achromatic prisms , but they are not necessary . 5. The Double - Reflecting Stereoscope . In this form 22 Sir David ...
Page 68
... axis , so that they might act as one bar magnet and be revolved at pleasure about the common axial line . A wire , which entering at one pole was carried along the axis of the magnetic arrangement , was at the centre turned outwards at ...
... axis , so that they might act as one bar magnet and be revolved at pleasure about the common axial line . A wire , which entering at one pole was carried along the axis of the magnetic arrangement , was at the centre turned outwards at ...
Page 73
... axis was parallel with the pre- viously leveled surface , and was defined at the focus end by a horizontal slit , illuminated by a lamp at night , so as completely to remove all difficulty of seeing the referring object , and allowing ...
... axis was parallel with the pre- viously leveled surface , and was defined at the focus end by a horizontal slit , illuminated by a lamp at night , so as completely to remove all difficulty of seeing the referring object , and allowing ...
Page 83
... axis of each a semi- cylindrical hollow was worked out from end to end . Into this hollow a brass wire was accurately fitted ; so that when one piece was placed upon the other , the whole had the appearance repre- sented in Plate III ...
... axis of each a semi- cylindrical hollow was worked out from end to end . Into this hollow a brass wire was accurately fitted ; so that when one piece was placed upon the other , the whole had the appearance repre- sented in Plate III ...
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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...