Proceedings of the American Academy of Arts and Sciences, Volumen2Metcalf and Company, 1852 Vol. 12 (from May 1876 to May 1877) includes: Researches in telephony / by A. Graham Bell. |
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Página 105
... magnet which weighs one pound the power to lift about twenty - six pounds . Magnets of two pounds ' weight will rarely lift ten times their own weight . A magnet in the possession of Mr. Peale , of Philadel- phia , ( the largest natural ...
... magnet which weighs one pound the power to lift about twenty - six pounds . Magnets of two pounds ' weight will rarely lift ten times their own weight . A magnet in the possession of Mr. Peale , of Philadel- phia , ( the largest natural ...
Página 106
... magnet , that they receive only a part of the magnetic development of which they are susceptible . This difficulty is removed , if we begin by dividing the thick bar into a number of thin pieces . These may be magnetized separately ...
... magnet , that they receive only a part of the magnetic development of which they are susceptible . This difficulty is removed , if we begin by dividing the thick bar into a number of thin pieces . These may be magnetized separately ...
Página 107
... magnet . The magnetism of iron , however developed , consists simply in the magnetic properties of these electrical currents . These currents , moreover , are not created by the inducing agent , but only directed . They are always ...
... magnet . The magnetism of iron , however developed , consists simply in the magnetic properties of these electrical currents . These currents , moreover , are not created by the inducing agent , but only directed . They are always ...
Página 108
... magnet attract and repel as two magnets . In both cases , particularly in the first , the action is much weaker than when we experiment on two magnets . In all the electro- dynamical motions , it is well known that those are the weakest ...
... magnet attract and repel as two magnets . In both cases , particularly in the first , the action is much weaker than when we experiment on two magnets . In all the electro- dynamical motions , it is well known that those are the weakest ...
Página 109
... magnetic axis . In the electro - magnet , the cur- rents of the iron are maintained in a strictly parallel direction by the controlling and ever - present activity of the battery current , the direc- tion of which is preserved uniform ...
... magnetic axis . In the electro - magnet , the cur- rents of the iron are maintained in a strictly parallel direction by the controlling and ever - present activity of the battery current , the direc- tion of which is preserved uniform ...
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