Electricity for Public Schools & CollegesLongmans, Green, & Company, 1903 - 451 páginas |
Dentro del libro
Resultados 1-5 de 100
Página xi
... of Force CHAPTER III . MAGNETIC MEASUREMENTS . 1. Coulomb's Torsion Balance • THE EARTH'S MAGNETISM . 2. Use of Torsion Balance at constant angle ' 3. Method of Oscillations . 21 24 22220 PAGE 26 · 27 27 28 28 29 SECTION 4.
... of Force CHAPTER III . MAGNETIC MEASUREMENTS . 1. Coulomb's Torsion Balance • THE EARTH'S MAGNETISM . 2. Use of Torsion Balance at constant angle ' 3. Method of Oscillations . 21 24 22220 PAGE 26 · 27 27 28 28 29 SECTION 4.
Página xiv
... Constant Force . 6. Work where the Force varies as the Distance 7. Work where the Force varies as the Inverse Square of the Distance , 121 122 122 · 124 . 125 127 . 127 128 128 129 129 I or as 129 8. Potential , and Difference of ...
... Constant Force . 6. Work where the Force varies as the Distance 7. Work where the Force varies as the Inverse Square of the Distance , 121 122 122 · 124 . 125 127 . 127 128 128 129 129 I or as 129 8. Potential , and Difference of ...
Página xv
... Constant Batteries 12. Remarks on Cells and on Batteries . . 170 . 171 . 173 . 173 . 175 . 176 180 CHAPTER XII . THE CHEMICAL PHENOMENA ACCOMPANYING THE PASSAGE OF THE CURRENT . 1. Introductory 2. Heating Effects ; a Brief Account 3 ...
... Constant Batteries 12. Remarks on Cells and on Batteries . . 170 . 171 . 173 . 173 . 175 . 176 180 CHAPTER XII . THE CHEMICAL PHENOMENA ACCOMPANYING THE PASSAGE OF THE CURRENT . 1. Introductory 2. Heating Effects ; a Brief Account 3 ...
Página xix
... Constant Induced Currents 8. Changes that Give Induced Currents . · 330 332 · 332 • 333 · 334 • · 335 • 335 • 336 · • 337 • 340 340 343 346 • 347 • 349 351 . 352 - 355 · 357 SECTION 9. Coefficient of Mutual Induction , or of Mutual ...
... Constant Induced Currents 8. Changes that Give Induced Currents . · 330 332 · 332 • 333 · 334 • · 335 • 335 • 336 · • 337 • 340 340 343 346 • 347 • 349 351 . 352 - 355 · 357 SECTION 9. Coefficient of Mutual Induction , or of Mutual ...
Página 16
... constant . We give to this quantity μl the name of the magnetic moment of the needle . We call it m . When μ / 1 , both and being measured in C.G.S. units as given in §§ 2 and 7 , then the needle is said to be of unit moment . A needle ...
... constant . We give to this quantity μl the name of the magnetic moment of the needle . We call it m . When μ / 1 , both and being measured in C.G.S. units as given in §§ 2 and 7 , then the needle is said to be of unit moment . A needle ...
Contenido
| 1 | |
| 2 | |
| 3 | |
| 4 | |
| 5 | |
| 6 | |
| 7 | |
| 8 | |
| 180 | |
| 182 | |
| 183 | |
| 189 | |
| 201 | |
| 203 | |
| 204 | |
| 206 | |
| 9 | |
| 10 | |
| 12 | |
| 13 | |
| 14 | |
| 15 | |
| 16 | |
| 17 | |
| 19 | |
| 20 | |
| 21 | |
| 23 | |
| 24 | |
| 26 | |
| 27 | |
| 28 | |
| 29 | |
| 30 | |
| 31 | |
| 34 | |
| 36 | |
| 37 | |
| 38 | |
| 39 | |
| 40 | |
| 42 | |
| 43 | |
| 44 | |
| 45 | |
| 46 | |
| 47 | |
| 48 | |
| 49 | |
| 51 | |
| 52 | |
| 53 | |
| 55 | |
| 57 | |
| 59 | |
| 60 | |
| 63 | |
| 74 | |
| 76 | |
| 78 | |
| 81 | |
| 82 | |
| 83 | |
| 85 | |
| 86 | |
| 88 | |
| 90 | |
| 91 | |
| 94 | |
| 96 | |
| 98 | |
| 100 | |
| 102 | |
| 103 | |
| 104 | |
| 105 | |
| 108 | |
| 113 | |
| 115 | |
| 117 | |
| 118 | |
| 119 | |
| 120 | |
| 121 | |
| 122 | |
| 124 | |
| 125 | |
| 126 | |
| 127 | |
| 128 | |
| 129 | |
| 131 | |
| 133 | |
| 134 | |
| 135 | |
| 136 | |
| 137 | |
| 138 | |
| 139 | |
| 141 | |
| 142 | |
| 143 | |
| 144 | |
| 145 | |
| 147 | |
| 148 | |
| 150 | |
| 151 | |
| 152 | |
| 153 | |
| 155 | |
| 158 | |
| 159 | |
| 161 | |
| 163 | |
| 164 | |
| 165 | |
| 167 | |
| 169 | |
| 170 | |
| 171 | |
| 173 | |
| 175 | |
| 176 | |
| 209 | |
| 211 | |
| 214 | |
| 215 | |
| 216 | |
| 219 | |
| 221 | |
| 222 | |
| 224 | |
| 226 | |
| 228 | |
| 229 | |
| 230 | |
| 231 | |
| 232 | |
| 233 | |
| 234 | |
| 238 | |
| 239 | |
| 240 | |
| 241 | |
| 244 | |
| 245 | |
| 246 | |
| 248 | |
| 249 | |
| 252 | |
| 253 | |
| 254 | |
| 255 | |
| 260 | |
| 261 | |
| 263 | |
| 264 | |
| 265 | |
| 268 | |
| 271 | |
| 275 | |
| 279 | |
| 280 | |
| 282 | |
| 283 | |
| 285 | |
| 286 | |
| 289 | |
| 290 | |
| 291 | |
| 292 | |
| 293 | |
| 294 | |
| 297 | |
| 298 | |
| 299 | |
| 301 | |
| 302 | |
| 304 | |
| 306 | |
| 307 | |
| 308 | |
| 310 | |
| 311 | |
| 313 | |
| 315 | |
| 316 | |
| 318 | |
| 319 | |
| 321 | |
| 322 | |
| 323 | |
| 324 | |
| 326 | |
| 327 | |
| 328 | |
| 330 | |
| 332 | |
| 333 | |
| 334 | |
| 335 | |
| 336 | |
| 337 | |
| 340 | |
| 342 | |
| 343 | |
| 346 | |
| 347 | |
| 349 | |
| 351 | |
| 352 | |
| 355 | |
| 357 | |
| 363 | |
| 369 | |
| 376 | |
| 383 | |
| 415 | |
| 424 | |
| 431 | |
| xxxii | |
| xxxix | |
| xlii | |
| xlv | |
| xlvi | |
| xlvii | |
| xlix | |
| l | |
| li | |
| lii | |
| liii | |
Otras ediciones - Ver todas
Términos y frases comunes
acid acting action ampères angle anode armature arrangement axis battery body called cell centre Chapter charge chemical circuit coil condenser conductor connected consider constant copper couple cylinder deflexion diamagnetic dielectric difference of potential direction disc discharge distance dynes earth earth's field ebonite electricity electro-magnetic electrolytic electrometer electroscope electrostatic energy equal equivalent ergs experiment external field of force field-strength galvanometer give given glass heat Hence horizontal hydrogen induced current instrument insulated iron Joule's law junctions kathode Leyden jar lines of force magnetic field magnetic moment magnetic shell magnetised marked lines means measured metal molecules move Ohm's law ohms opposite Peltier effect phenomena plane plate pole position quantity reader repelled represent resistance respectively rotation spark sphere strength surface t₁ temperature torsion torsion balance tricity unit V₁ vertical vessel Volta's wire zero potential zinc
Pasajes populares
Página xxiii - A mass of 2^ kilogrammes loses, each 2\ minutes, a velocity of 300 metres per 2 hours. Express in dynes the force acting. 4. Two forces, of 30 dynes and 40 dynes respectively, act on a material particle at right angles to one another. Find the magnitude of their resultant, and the angle that it makes with the direction of the smaller force. 5. A force of 5000 dynes is resolved into others acting at right angles to one another. One of these is 3000 dynes. Find the other component, and the angle that...
Página 26 - If they are identical in mass and in dimensions, we have simply that m' - O § 4. Laws of Magnetism. — There are two fundamental laws in magnetism. I. Like poles repel, unlike poles attract, one another. This simple observed fact needs no comment. II. The force between two poles varies inversely as the square of the distance between them. It may also be stated that the force between two poles ^ and // is proportional to the product px p'.
Página 217 - Kirchhoff has enunciated in the form of two ' Laws ' the principles that must guide us in such an investigation. Law I. — If any number of conductors meet at a point, and if all currents flowing to the point be considered +, and ail currents flowing from the point be considered — , and if the condition of things be steady, or the potential at the point be not altering, then the algebraic sum of the currents meeting at the point must be zero. Or 2 . C = o.
Página 179 - DanielFs cell. — In this the only essential difference from the above is that we have copper in a saturated solution of copper sulphate, instead of platinum (or carbon) in nitric acid. But it is usually constructed having the zinc and acid in the porous pot, while very often the copper itself forms the outside vessel. The zinc may be surrounded by a semi-saturated solution of zinc sulphate, or of common salt, instead of by dilute sulphuric acid. Here the hydrogen reduces the copper sulphate ; sulphuric...
Página 30 - ... the vertical plane, that passes through the geographical north and south points, is called the plane of the geographical meridian. The earth's field can be resolved into a vertical and a horizontal component in this plane, as we shall see further in § 13. It is the horizontal component that acts on the ordinary compass, so that the magnetic axis of the needle will come to rest in this line. Hence, the plane of the magnetic meridian can also be defined as that vertical plane that contains the...
Página 127 - In the CGS system the unit of work is called, the ' erg,' and is the work done when a force of one dyne is overcome through a distance of one centimetre along the lines of force.
Página xxxviii - ... are connected with a galvanometer and the coil can be made to rotate about one of its diameters. On turning the coil half round, the galvanometer needle is momentarily deflected, but on causing it to rotate in one direction continuously and rapidly no effect is produced. Explain these two results. 4. A plane rectangular iron frame is placed vertically so that it faces due magnetic north.