Practical Electricity: A Laboratory and Lecture Course for First Year Students of Electrical Engineering, Based on the International Definitions of the Electrical Units, Volume 1 |
From inside the book
Results 1-5 of 58
Page 10
... glass tube t , open at both ends , and with its lower end nearly touching the bottom of v . This tube is graduated in fractions of a cubic centimetre or cubic inch . D con- sists of two thin copper plates p , p , dipping into a solu ...
... glass tube t , open at both ends , and with its lower end nearly touching the bottom of v . This tube is graduated in fractions of a cubic centimetre or cubic inch . D con- sists of two thin copper plates p , p , dipping into a solu ...
Page 26
... glass bell - jar G. To obtain a uniform adherent deposit of silver , it is de- sirable , as already stated , that the cathode should possess G T V about 30 square centimetres of surface for every ampere passing . Hence , if a large ...
... glass bell - jar G. To obtain a uniform adherent deposit of silver , it is de- sirable , as already stated , that the cathode should possess G T V about 30 square centimetres of surface for every ampere passing . Hence , if a large ...
Page 39
... glass tubing put between the plates at the top and bottom , or to save the expense of thick platinum plates , two pieces of thin platinum foil may be used , stuck at the bottom with bicycle , or other suitable , cement , to a piece of glass ...
... glass tubing put between the plates at the top and bottom , or to save the expense of thick platinum plates , two pieces of thin platinum foil may be used , stuck at the bottom with bicycle , or other suitable , cement , to a piece of glass ...
Page 42
... glass vessel is said to be hermetically sealed when any opening that previously existed in it has been closed , by heating the glass round the opening until it becomes soft and sticky , and pressing the edges together . apparatus must ...
... glass vessel is said to be hermetically sealed when any opening that previously existed in it has been closed , by heating the glass round the opening until it becomes soft and sticky , and pressing the edges together . apparatus must ...
Page 44
... glass tube or of a narrow strip of some light substance like aluminium . But the best of all methods , and therefore the one employed with very sensitive galvanometers , consists in using a ray of light several feet long , but , of ...
... glass tube or of a narrow strip of some light substance like aluminium . But the best of all methods , and therefore the one employed with very sensitive galvanometers , consists in using a ray of light several feet long , but , of ...
Contents
| 358 | |
| 364 | |
| 370 | |
| 381 | |
| 393 | |
| 408 | |
| 418 | |
| 423 | |
| 58 | |
| 63 | |
| 67 | |
| 69 | |
| 71 | |
| 79 | |
| 99 | |
| 120 | |
| 130 | |
| 132 | |
| 135 | |
| 152 | |
| 167 | |
| 172 | |
| 173 | |
| 174 | |
| 176 | |
| 179 | |
| 181 | |
| 183 | |
| 188 | |
| 191 | |
| 194 | |
| 196 | |
| 197 | |
| 198 | |
| 200 | |
| 232 | |
| 257 | |
| 267 | |
| 274 | |
| 280 | |
| 298 | |
| 304 | |
| 311 | |
| 341 | |
| 349 | |
| 428 | |
| 431 | |
| 433 | |
| 434 | |
| 438 | |
| 443 | |
| 445 | |
| 449 | |
| 457 | |
| 458 | |
| 459 | |
| 460 | |
| 462 | |
| 466 | |
| 475 | |
| 477 | |
| 482 | |
| 492 | |
| 493 | |
| 498 | |
| 502 | |
| 507 | |
| 510 | |
| 513 | |
| 516 | |
| 519 | |
| 521 | |
| 522 | |
| 525 | |
| 536 | |
| 539 | |
| 545 | |
| 549 | |
| 555 | |
| 565 | |
| 633 | |
Other editions - View all
Common terms and phrases
altered ammeter amperes apparatus axis battery bobbin body brass calibration cell centre charge compass needle conductor connected constant controlling force copper cubic centimetres current flowing curve deflecting force diameter direction directly proportional earth ebonite electric current electric energy electrical efficiency electrified electrometer electroscope electrostatic employed equal example exerted experiment external circuit fixed galvano given glass Hence horizontal inch inside instrument insulated international ohms iron knob length lines of force liquid magnetic field measured metal meter method nought obtained Ohm's law P.Ds parallel permanent magnet piece pipe placed plane plate pointer points pole position relatively potential pressure produced ratio relative strengths resistance right angles scale seen in Fig shown in Fig shunt sine soft-iron sulphate sulphuric acid tangent galvanometer tangent law temperature terminals tube turned uniform vessel voltmeter volts wattmeter watts weight Wheatstone's bridge wound zero zinc zinc sulphate
Popular passages
Page 591 - Ampere, which is one-tenth of the unit of current of the CGS system of electromagnetic units and which is represented sufficiently well for practical use by the unvarying current which, when passed through a solution of nitrate of silver in water, in accordance with a certain specification, deposits silver at the rate of 0.001118 of a gramme per second.
Page 585 - 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 587 - ... the electromotive force that, steadily applied to a conductor whose resistance is one international ohm, will produce a current of...
Page 586 - The unit of current shall be what is known as the international ampere, which is one-tenth of the unit of current of the centimeter-gramsecond system of electro-magnetic units, and is the practical equivalent of the unvarying current, which, when passed through a solution of nitrate of silver in water in accordance with standard specifications, deposits silver at the rate of one thousand one hundred and eighteen millionths of a gram per second.
Page 466 - ... 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 466 - Mix the washed mercurous sulphate with the zinc sulphate solution, adding sufficient crystals of zinc sulphate from the stock bottle to ensure saturation, and a small quantity of pure mercury. Shake these up well together to form a paste of the consistence of cream. Heat the paste, but not above a temperature of 30° C.