Manual of Electricity: Including Galvanism, Magnetism, Diamagnetism, Electro-dynamics, Magneto-electricity, and the Electric Telegraph, Svazek 10766G. Knight and Company, 1855 |
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Manual of Electricity: Including Galvanism, Magnetism, Diamagnetism, Electro ... Henry M Noad Náhled není k dispozici. - 2023 |
Manual of Electricity: Including Galvanism, Magnetism ..., Svazek 10766 Henry M. Noad Náhled není k dispozici. - 2015 |
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Oblíbené pasáže
Strana 372 - ... the atoms of matter are in some way endowed or associated with electrical powers, to which they owe their most striking qualities, and amongst them their mutual chemical affinity.
Strana 7 - If any one should undertake to prove, as a clear consequence of the phenomenon, that thunder is, in the hands of nature, what electricity is in ours — that those wonders which we dispose at our pleasure are only imitations on a small scale of those grand effects which terrify us...
Strana 473 - During a long time they seem to prove victorious. Several horses sink beneath the violence of the invisible strokes, which they receive from all sides in organs the most essential to life; and stunned by the force and frequency of the shocks, disappear under the water. Others, panting, with mane erect and haggard eyes, expressing anguish, raise themselves, and endeavour to flee from the storm by which they are overtaken.
Strana 421 - ... of experiment. In this manner he happened to suspend several upon the iron balcony in front of his laboratory, when to his inexpressible astonishment the limbs were thrown into strong convulsions. No electrical machine was now present to exert any influence.
Strana 340 - ... philosophical apparatus. Let it also be remembered, that for full half an hour before this period, the body had been well nigh drained of its blood, and the spinal marrow severely lacerated. No pulsation could be perceived meanwhile at the heart or wrist; but it may be supposed, that but for the evacuation of the blood, — the essential stimulus of that organ, — this phenomenon might also have occurred.
Strana 236 - ... 192. I hardly dare venture, even in the most hypothetical form, to ask whether the Aurora Borealis and Australis may not be the discharge of electricity., thus urged towards the poles of the earth, from whence it is endeavouring to return by natural and appointed means above the earth to the equatorial regions.
Strana 473 - A contest between animals of so different an organization furnishes a very striking spectacle. The Indians, provided with harpoons and long slender reeds, surround the pool closely ; and some climb upon the trees, the branches of which extend horizontally over the surface of the water. By their wild cries, and the length of their reeds, they prevent the horses from running away, and reaching the bank of the pool. The eels, stunned by the noise, defend themselves by the repeated discharge of their...
Strana 333 - The hoop is placed exactly in the magnetic meridian, and when the current is transmitted through it the needle deviates, and the force of the current is proportional to the tangent of tfte angle of the needles declination, whence the name given to the instrument.
Strana 90 - ... which again speedily appears by cooling the passages so as to restore the water which is necessary for the production of that effect. The phenomenon of the evolution of electricity in these circumstances is dependent also on the quality of the fluid in motion, more especially in relation to its conducting power. Water will not excite electricity unless it be pure ; the addition to it of any soluble salt or acid, even in minute quantity, is sufficient to destroy this property.
Strana 6 - It is not easy to say, whether we are most pleased with the simplicity and perspicuity with which these letters are written, the modesty with which the author proposes every hypothesis of his own, or the noble frankness with which he relates his mistakes, when they were corrected by subsequent experiments.