Journal of Natural Philosophy, Chemistry, and the Arts: Illustrated with Engravings. By William Nicholson. ...

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William Nicholson
G. G. and J. Robinson, 1802
 

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الصفحة 335 - ... from the quantity of this aberration, the form into which the lens appears to be thrown in my own eye, and the mode by which the change must be produced in that of every other person. And I flatter myself that...
الصفحة 338 - We see, moreover, in the first experiment, that the zinc, without contact of any other metal, has the power of decomposing water; and we can have no reason to suppose that the contact of the silver produces any new power, but that it serves merely as a conductor of electricity, and thereby occasions the formation of hydrogen gas.
الصفحة 338 - In the explanation of these experiments, it is necessary to advert to a point established by means of the electric pile. We know that when water is placed in a circuit of conductors of electricity, between the two extremities of a pile, if the power is sufficient to oxidate one of the wires of communication, the wire connected with the opposite extremity affords hydrogen gas.
الصفحة 314 - On this layer of balls fire is to be kindled, and in filling the grate, more balls are to be added with the coals, care being taken to mix the coals and balls well together in due proportions. If this is done, the fire will not only be very beautiful, but will send off a much greater quantity of radiant heat into the room than without them.
الصفحة 335 - Fifthly, by immerging the eye in water, to demonstrate that its accommodation does not depend on any change in the curvature of the cornea. Sixthly, by confining the eye at the extremities of its axis, to prove that no material alteration of its length can take place. Seventhly, to examine...
الصفحة 339 - Having procured a small wire of fine gold, and given it as fine a point as I could, I inserted it into a capillary glass tube; and, after heating the tube, so as to make it adhere to the point and cover it in every part, I gradually ground it down, till, with a pocket lens, I could discern that the point of the gold was exposed.
الصفحة 88 - ... regulated in frequency by the length of the lines which are terminated by the two refracting surfaces. It may be objected that, to complete the analogy, there should be tubes, to answer to the organ-pipes : but the tube of an organ-pipe is only necessary to prevent the divergence of the impression, and in light there is little or no tendency to diverge; and, indeed, in the case of a resonant passage, the air is not prevented from becoming sonorous by the liberty of lateral motion. It would seem...
الصفحة 163 - We are sorry to see this, because we have great expectations from the labours of this gentleman in the field of harmonics, and his late work is rich in refined and valuable matter. We presume humbly to recommend to him attention to his own admonitions to a very young and ingenious gentleman, who, he thinks, proceeded too far in animadverting on the writings of Newton, Barrow, and other eminent mathematicians.
الصفحة 87 - It has been already fhown, that found, in all probability, has very little tendency to diverge : in a medium fo highly elaftic as the luminous ether...
الصفحة 87 - If a smaller elastic body strikes against a larger one, it is well known that the smaller is reflected more or less powerfully, according to the difference of their magnitudes : thus, there is always a reflection when the rays of light pass from a rarer to a denser stratum of ether, and frequently an echo when a sound strikes against a cloud. A greater body striking a smaller one propels it, without losing all its motion ; thus, the particles of a denser stratum of ether do not impart the whole of...

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