Practical PhysicsGinn, 1922 - 472 pages |
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Page viii
... Cells . Secondary Cells . Heating Effects 244 XV . INDUCED CURRENTS 290 The Principle of the Dynamo and Motor . Dynamos . The Principle of the Induction Coil and Transformer XVI . NATURE AND TRANSMISSION OF SOUND 319 Speed and Nature ...
... Cells . Secondary Cells . Heating Effects 244 XV . INDUCED CURRENTS 290 The Principle of the Dynamo and Motor . Dynamos . The Principle of the Induction Coil and Transformer XVI . NATURE AND TRANSMISSION OF SOUND 319 Speed and Nature ...
Page 239
... cell . Since the earth is , on the whole , a good conductor , its potential is everywhere the same ( § 293 ) ; hence it makes a convenient standard of reference in potential measurements . To find the potential of a body rela- tive to ...
... cell . Since the earth is , on the whole , a good conductor , its potential is everywhere the same ( § 293 ) ; hence it makes a convenient standard of reference in potential measurements . To find the potential of a body rela- tive to ...
Page 240
... cell ) ; first measured the potential differences arising from the contact of dissimilar substances ; ennobled by Napoleon for his scientific services ; the volt , the practical unit of potential difference , is named in his honor Πλ A ...
... cell ) ; first measured the potential differences arising from the contact of dissimilar substances ; ennobled by Napoleon for his scientific services ; the volt , the practical unit of potential difference , is named in his honor Πλ A ...
Page 244
... , better , preceded by laboratory experiments on the simple cell and on the magnetic effects of a current . See , for example , Experiments 28 , 29 , and 30 of the authors ' Manual . Let the compass needle be deflected by a bar magnet 244.
... , better , preceded by laboratory experiments on the simple cell and on the magnetic effects of a current . See , for example , Experiments 28 , 29 , and 30 of the authors ' Manual . Let the compass needle be deflected by a bar magnet 244.
Page 245
... cell . This consists , in its simplest form , of a strip of copper and a strip of zinc immersed in dilute sulphuric acid ( Fig . 242 ) . E FIG . 242. Sim- ple voltaic cell Let the terminals of such a cell be connected for a few seconds ...
... cell . This consists , in its simplest form , of a strip of copper and a strip of zinc immersed in dilute sulphuric acid ( Fig . 242 ) . E FIG . 242. Sim- ple voltaic cell Let the terminals of such a cell be connected for a few seconds ...
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Common terms and phrases
ammeter amperes angle armature ball body calories carbon charge circuit coil color condenser conductor connected convex lens copper cubic centimeter Daniell cell density diameter direction distance dynamo earth electric electric charge electroscope engine equal experiment fact fall flame focal length fork freezing friction galvanic cell galvanometer gases glass gram gravity heat Hence hydrogen inch induced iron kinetic energy lamp Leclanché cell lens lever light lines of force liquid mass mechanical advantage mercury metal meter mirror molecules motion moving needle ohms opposite overtone pass pipe piston placed plane plate pole position potential pressure produced pull pump QUESTIONS AND PROBLEMS rays reflected resistance rotation shown in Fig shows sound specific gravity speed steam substances surface temperature thermometer tion tube vapor velocity vessel vibration volts wave length weight wheel wire zinc
Popular passages
Page 458 - And show me how they calculated the initiatory speed of our car?" "Yes, my worthy friend; taking into consideration all the elements of the problem, the distance from the center of the earth to the center of the moon...
Page 67 - Any two bodies in the universe attract each other with a force which is directly proportional to the product of the masses and inversely proportional to the square of the distance between them.
Page 393 - The magnifying power of an astronomical telescope is therefore the focal length of the objective divided by the focal length of the eyepiece. It...
Page 22 - Archimedes stated that a body immersed in a fluid is buoyed up by a force equal to the weight of the displaced fluid.
Page 84 - Every body continues in its state of rest or uniform motion in a straight line, except in so far as it is compelled to change that state by a force impressed upon it.
Page 367 - Index of refraction. The ratio of the speed of light in air to its speed in any other medium is called the index of refraction of that medium.
Page 260 - The resistance of any conductor is directly proportional to its length and inversely proportional to the area of its cross section or to the square of its diameter.
Page 60 - ... is, the resultant of two parallel forces acting in the same direction is equal to the sum of the two forces.
Page 62 - For in § 79 it was shown that if any one force is to have the same effect upon a body as two forces acting simultaneously, it must be represented by the diagonal of a parallelogram the sides of which represent the two forces. Hence, conversely, if two forces are to be equivalent in their...
Page 2 - Thus, there are 12 inches in a foot, 3 feet in a yard, 5^- yards in a rod, 1760 yards in a mile, etc.