The Mechanics' Magazine, Museum, Register, Journal, and Gazette, Volumen28M. Salmon, 1838 |
Contenido
| 1 | |
| 2 | |
| 12 | |
| 16 | |
| 18 | |
| 23 | |
| 30 | |
| 34 | |
| 258 | |
| 266 | |
| 267 | |
| 279 | |
| 286 | |
| 292 | |
| 298 | |
| 302 | |
| 36 | |
| 50 | |
| 51 | |
| 66 | |
| 72 | |
| 80 | |
| 85 | |
| 96 | |
| 99 | |
| 102 | |
| 112 | |
| 130 | |
| 136 | |
| 146 | |
| 151 | |
| 152 | |
| 162 | |
| 167 | |
| 179 | |
| 194 | |
| 210 | |
| 218 | |
| 224 | |
| 226 | |
| 242 | |
| 245 | |
| 250 | |
| 306 | |
| 316 | |
| 325 | |
| 329 | |
| 335 | |
| 336 | |
| 338 | |
| 347 | |
| 355 | |
| 365 | |
| 370 | |
| 371 | |
| 375 | |
| 376 | |
| 386 | |
| 394 | |
| 397 | |
| 402 | |
| 410 | |
| 413 | |
| 418 | |
| 428 | |
| 434 | |
| 440 | |
| 463 | |
| 467 | |
| 469 | |
Otras ediciones - Ver todas
Términos y frases comunes
advantage anthracite coal apparatus appears applied atmosphere aurora borealis Birmingham boiler British carbonate carbonic acid carriages cause centre coal communication condenser construction cylinder David Brewster diameter distance effect electricity employed engine epicycloid equal experiments feet fire fuel furnace Galignani give given glass heat hot blast hour hydraulic lime improvements inches India invention inventor iron labour late length letter lime Liverpool London machine machinery Magazine magnet manufacture means Mechanics ment metal method Middlesex miles minute MOORING BALLOONS motion nearly object observed obtained paper pass patent piece Pindar pipe planet plate present principle produced Professor pump purpose quantity railway Red Sea remarks render result shells six months Society steam substance superior planet surface synodic period tain tion treffos tricity tubes vessel weight wheel whole wire
Pasajes populares
Página 456 - tis, to cast one's eyes so low! The crows and choughs, that wing the midway air, Show scarce so gross as beetles : Half way down Hangs one that gathers samphire; dreadful trade! Methinks, he seems no bigger than his head: The fishermen, that walk upon the beach, Appear like mice; and yon...
Página 5 - Bradley's discoveries of the aberration of light and the nutation of the earth's axis, the photographic measurement of the heavens, Schwabe's work on the sunspot period, and Mr.
Página 154 - ... he takes it with him into a room, and turns a machine enclosed in a cylindrical case, at the top of which is an electrometer, a small fine pith ball; a wire connects with a similar cylinder and electrometer in a distant apartment; and his wife, by remarking the corresponding motions of the ball, writes down the words they indicate; from which it appears that he has formed an alphabet of motions. As the length of the wire makes no difference in the effect, a correspondence might be carried on...
Página 30 - ... paddle of a canoe. As six of the paddles are raised from the water, six more are entered, and the two sets of paddles make their strokes of about eleven feet in each evolution.
Página 208 - ... the squares of the periodic times are as the cubes of the distances from the common centre, the centripetal forces will be inversely as the squares of the distances.
Página 30 - The crank of the axis acts upon the paddles about one-third of their length from their lower ends, on which part of the oar the whole force of the axis is applied. The engine is placed in the bottom of the boat about onethird from the stern, and both the action and reaction turn the wheel the same way.
Página 158 - I fancy when asked to exchange them for metallic ones, many persons would express themselves content, rather " to bear the ills they have, than fly to others which they know not of.
Página 154 - ... a wire connects with a similar cylinder and electrometer in a distant apartment ; and his wife, by remarking the corresponding motions of the ball, writes down the words they indicate : from which it appears that he has formed an alphabet of motions. As the length of the wire makes no difference in the effect, a correspondence might be carried on at any distance : within and without a besieged town, for instance ; or for a purpose much more worthy, and a thousand times more harmless, between...
Página 31 - Well, gentlemen, although I shall not live to see the time, you will, when steamboats will be preferred to all other means of conveyance, and especially for passengers ; and they will be particularly useful in the navigation of the river Mississippi.
Página 41 - ... electricity, such as an increase of the thickness of the glass, or by substituting for the small knob of the jar a large ball. But the arrangement which produces the greatest effect, is that of a long fine copper wire insulated, parallel to the horizon, and terminated at each end by a small ball. When sparks are thrown on this from a globe of about a foot in diameter, the wire, at each discharge, becomes beautifully luminous from one end to the other, even if it be a hundred feet long ; rays...