# The Electrical Review, Volume 8

Electrical review, Limited, 1891 - Electrical engineering

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### Contents

 Section 1 1 Section 2 7 Section 3 8 Section 4 9 Section 5 62 Section 6 135 Section 7 142 Section 8 176
 Section 23 376 Section 24 377 Section 25 418 Section 26 426 Section 27 438 Section 28 439 Section 29 443 Section 30 443

 Section 9 182 Section 10 198 Section 11 199 Section 12 200 Section 13 203 Section 14 225 Section 15 234 Section 16 248 Section 17 256 Section 18 272 Section 19 273 Section 20 294 Section 21 323 Section 22 350
 Section 31 449 Section 32 467 Section 33 491 Section 34 514 Section 35 538 Section 36 547 Section 37 559 Section 38 582 Section 39 583 Section 40 591 Section 41 596 Section 42 603 Section 43 612 Copyright

### Popular passages

Page 256 - As a unit of resistance, the international ohm, which is based upon the ohm equal to 10" units of resistance of the CGS system of electromagnetic units, and is represented by the resistance offered to an unvarying electric current by a column of mercury at the temperature of melting ice, 14.4521 grams in mass, of a constant cross-sectional area and of the length of 106.3 centimetres.
Page 256 - It is convenient to arrange the mounting so that the cell may be immersed in a water bath up to the level of, say, the upper surface of the cork. Its temperature can then be determined more accurately than is possible when the cell is in air. In using the cell sudden variations of temperature should as far as possible be avoided.
Page 308 - Must be so placed in wet places that an air space will be left between conductors and pipes in crossing, and the former must be run in such a way that they cannot come in contact with the pipe accidentally. Wires should be run over, rather than under, pipes upon which moisture is likely to gather or which, by leaking, might cause trouble on a circuit.
Page 256 - In the following specification the term silver voltameter means the arrangement of apparatus by means of which an electric current is passed through a solution of nitrate of silver in water. The silver voltameter measures the total electrical quantity which has passed during the time of the experiment, and...
Page 256 - Then insert the cork and zinc rod, passing the glass tube through the hole prepared for it. Push the cork gently down until its lower surface is nearly in contact with the liquid. The air will thus be nearly...
Page 208 - May there not also bo an immaterial (perhaps an ethereal) medium of communication ': Is it possible that an idea can be transferred from one person to another by a process such as we have not yet grown accustomed to, and know practically nothing about? In this case I have evidence. I assert that I have seen it done, and am perfectly convinced of the fact.
Page 229 - ... planet. Doppler had suggested as far back as 1841 that the same principle, on which he had shown that a sound should become sharper or flatter if there were an approach or a recession between the ear and the source of the sound, would apply equally to light ; and he went on to say that the difference of colour of some of the binary stars might be produced in this way by their motions.
Page 309 - Must be capable of being disconnected at the power plant, or of being divided into sections, so that in case of fire on the railway route, the current may be shut off from the particular section and not interfere with the work of the firemen. This rule also applies to feeders.
Page 256 - ... carefully removing any loose pieces of the zinc. Just before making up the cell dip the zinc into dilute sulphuric acid, wash with distilled water, and dry with a clean cloth or filter paper.
Page 206 - ... too remote to be resolved into separate stars ; though indeed, in 1858, Mr. Herbert Spencer showed that the observations of nebulse up to that time were really in favour of an evolutional progress. In 1864 I brought the spectroscope to bear upon them; the bright lines which flashed upon the eye showed the source of the light to be glowing gas, and so restored these bodies to what is probably their true place, as an early stage of sidereal life. At that early time our knowledge of stellar spectra...