The Mechanic's Magazine, Museum, Register, Journal and Gazette, Band 30Robertson, 1839 |
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Seite 9
... passes through the water , considering that its importance will claim a place in your columns . The principle is the ... pass- ing through the water , the results being the same . The method I propose for ascertaining the velocity of the ...
... passes through the water , considering that its importance will claim a place in your columns . The principle is the ... pass- ing through the water , the results being the same . The method I propose for ascertaining the velocity of the ...
Seite 12
... pass through both walls . The space between the beams is only 2 feet , and the place of the materials re- moved is , if necessary , supplied , while the house is in the act of moving , by a block of wood which rests on the beams . The ...
... pass through both walls . The space between the beams is only 2 feet , and the place of the materials re- moved is , if necessary , supplied , while the house is in the act of moving , by a block of wood which rests on the beams . The ...
Seite 13
... pass easily and noiselessly over it . There can be no doubt of the suitableness of wood for forming a roadway ; and such an im- provement is certainly much wanted in all American towns , and in none of them more than in New York . Some ...
... pass easily and noiselessly over it . There can be no doubt of the suitableness of wood for forming a roadway ; and such an im- provement is certainly much wanted in all American towns , and in none of them more than in New York . Some ...
Seite 15
... pass on and off the deck by strong commodious platforms or draw - bridges , communicating with the landing - places , and over which car- riages of all kinds drive on and off the bridge without difficulty or inconvenience . The bridge ...
... pass on and off the deck by strong commodious platforms or draw - bridges , communicating with the landing - places , and over which car- riages of all kinds drive on and off the bridge without difficulty or inconvenience . The bridge ...
Seite 20
... pass freely through a suitable opening in the head B of the frame , to the lever L. One of these straps is seen at e , the other being on the posterior side of the lever , with which they are united by means of a steel bolt turned with ...
... pass freely through a suitable opening in the head B of the frame , to the lever L. One of these straps is seen at e , the other being on the posterior side of the lever , with which they are united by means of a steel bolt turned with ...
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acid apparatus appears applied atmosphere boat boiler camera obscura carbonic acid carriage cause centre charcoal coal colour common consequence construction copper crucible cylinder diameter effect employed engine equal experiments feet fire fixed fluid force friction fuel furnace Galignani greater hour improvements inches invention iron latent heat length lever light Liverpool London machine machinery Magazine manufacture matrass matter means Mechanics ment Messrs metal method Metropolitan Railway miles minute mode motion muriatic acid object observed obtained paddle-wheel paddles paper pass patent PHOTOGENIC DRAWING piece pipe plate portion pounds present pressure produced Prussian blue purpose quantity rails Railway ratus render resistance road screw side six months specific gravity specific heat steam steam-engine stove strength sufficient surface tained temperature tenacity thermometer tion trials tube vapour vessel W. A. Robertson weight wheel zinc
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Seite 415 - Archimedes; and he who perceived that the square of the hypotenuse of a right-angled triangle is equal to the sum of the squares of the other two sides, is not in consequence a Pythagorean.
Seite 284 - ... perfectly safe. But as it did not yet come up entirely to the inventor's expectations, he proceeded to contrive a third lamp, in which he proposed to surround the oil vessel with a number of capillary tubes. Then it struck him, that if he cut off the middle of the tubes, or made holes in metal plates, placed at a distance from each other, equal to the length of the tubes, the air would get in better, and the effect in preventing the communication of explosion would be the same.
Seite 244 - Nor when cold Winter keens the brightening flood, Would I weak-shivering linger on the brink.
Seite 346 - The images formed by means of a camera obscura have been found to be too faint to produce, in any moderate time, an effect upon the nitrate of silver.
Seite 348 - ... and may be fixed for ever in the position which it seemed only destined for a single instant to occupy.
Seite 7 - I will set before your eyes a type of a ' squirt' which hath been devised to cast much water upon a burning house, wishing a like squirt and plenty of water to be alwaies in a readinesse where fire may do harme ; for this kind of squirt may be made to holde an hoggeshed of water, or if you will, a greater quantity thereof, and may be so placed on his frame, that with ease and a smal strength, it sahl be mounted, imbased or turned to any one side, right against any fired marke, and made to squirt...
Seite 84 - As the three angles of a plane triangle are equal to two right angles, that is, to 180° (Euc, 32. 1.) the' sum of any two of them is the supplement of the other.
Seite 185 - Sir, — Permit me, through the medium of your Journal, to call the attention of engineers on railways to the very erroneous method many of them adopt in setting out the curves, which, if intended to be segments of circular arcs — ought certainly to be so. Of course it must be generally known, from the great radii of even the least of the curves on railways — it would be impracticable to strike them, as in the usual manner, from a fixed centre; but from the known relation between the sine and...
Seite 414 - But if it be again washed with a liberal quantity of the solution of silver, it becomes again sensible to light, and even more so than it was at first. In this way, by alternately washing the paper with salt and silver, and drying it between times, Mr.
Seite 346 - The copy of a painting or the profile, immediately after being taken, must be kept in an obscure place ; it may, indeed, be examined in the shade, but in this case the exposure should be only for a few minutes ; by the Light of candles or lamps, as commonly employed, it is not sensibly affected.