Railway Locomotives and Cars, Τόμος 16

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Simmons-Boardman Publishing Corporation, 1843
 

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Σελίδα 167 - and arranged in such rooms and galleries as may be provided for that purpose, in suitable cases, when necessary for their preservation, and in such a manner as shall be conducive to a beneficial and favorable display thereof; the models, and specimens of composition and fabrics, and other
Σελίδα 46 - light of the cylindric refractor and that produced by the lenses at their greatest velocity, was -very striking. The former presented a large diffuse object of inferior brilliancy, while the latter exhibited a sharp pin point of brilliant light. Upon a careful consideration of these facts, it appears warrantable to draw the following
Σελίδα 183 - I propose, therefore, to show how these extraordinary and most important changes occur, and shall point out some at least of the modes by which we can demonstrate the truth of this assertion by actual experiment. The principal causes which produce this change are percussion, heat, and magnetism ; and it is doubtful whether either of these means
Σελίδα 46 - in a less degree, to a loss of intensity; both of which defects appear to increase in proportion as the motion of the luminous object is accelerated. 3. That this deficiency of volume is the most remarkable optical phenomenon connected with the rapid motion of luminous bodies, and that it
Σελίδα 82 - the top of the cliff, and then falling over it were carried to the eastern, the centre, and the western chamber. Lieutenant Hutchinson of the Royal engineers, had the command of the three batteries, and it was arranged that when he fired the centre, Mr. Hodges and Mr. Wright should
Σελίδα 46 - I shall briefly describe in the following order: 1. The flash of the lens revolving slowly was very much larger than that of the rapidly revolving series; and this decreasing of size in the luminous object presented to the eye, became more marked as the rate of revolution was
Σελίδα 47 - of all the theories of irradiation, states it to be his opiniOn that the most probable mode of accounting for the various observed phenomena of irradiation, is to suppose that, in the case of a night view, the excitement caused by light is propagated over the¿ retina beyond the limits of the day image of the object, owing
Σελίδα 81 - who planned, and on his colleagues who assisted, in carrying it into execution. Everybody has heard of the Shakspeare Cliff, and I have no doubt that a majority of your readers have seen it. I should feel it a superfluous task to speak of its vast height were not the next cliff to it, on the
Σελίδα 82 - Exactly at 26 minutes past 2 o'clock a slight twitch or shock of the ground was felt, and then a low, faint, indistinct, indescribable moaning subterranean rumble was heard, and immediately afterwards the bottom of the cliff began to belly out, and then almost
Σελίδα 312 - be infinitely greater, but perhaps not more fatal to the passengers, than if the mail at its common pace, were to do the same ; besides which, it must always be remembered, that though the stage may profess to travel at the safe lukewarm pace of ¿eight miles an hour, yet any

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