Annual of Scientific Discovery: Or, Year-book of Facts in Science and Art, for [1850]-71, Exhibiting the Most Important Discoveries and Improvements in Mechanics, Useful Arts, Natural Philosophy, Chemistry, Astronomy, Geology, Biology, Botany, Mineralogy, Meteorology, Geography, Antiquities, Etc., Together with Notes on the Progress of Science ... a List of Recent Scientific Publications; Obituaries of Eminent Scientific Men, Etc. ...Gould and Lincoln, 1859 |
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101 페이지 - The beauty of electricity, or of any other force, is not that the power is mysterious and unexpected, touching every sense at unawares in turn, but that it is under law, and that the taught intellect can even now govern it largely. The human mind is placed above, not beneath it; and it is in such a point of view that the mental education afforded by science is rendered supereminent in dignity, in practical application, and utility : for, by enabling the mind to apply the natural power through law,...
130 페이지 - For this reason they merit a much more critical examination than has yet been given them ; for by their aid we may be able to ascertain points of great interest in other departments of science. Thus, if we are ever able to acquire certain knowledge respecting the physical state of the sun and other stars, it will be by an examination of the light they emit.
160 페이지 - ... fixed as to throw the light from right ahead to two points abaft the beam on the port side, and of such a character as to be visible at a distance of at least two miles.
267 페이지 - ... as to where I was, during which there was a loud rushing noise in my ears, like steam passing out of a tea-kettle, and a feeling of constriction around the lower part of my neck as if my coat were buttoned too tightly ; my forehead was wet with perspiration, and I yawned frequently. My intellects returned, however, almost immediately, and I remember saying, ' This has nothing to do with homoeopathy, but it has to do with a very powerful poison ; there are more things in heaven and earth than...
198 페이지 - I am a little slow to give full credence to numerical generalizations of this sort, because we are apt to find their authors either taking some liberties with the numbers themselves, or demanding a wider margin of error in the application of their principles than the precision of the experimental data renders it possible to accord, so that the result is more or less wanting in that close appliance to nature which makes all the difference between a loose analogy and a physical law ; but in this instance...
193 페이지 - I think that the preceding results are all explicable on the one admission, that Person's view of the gradual liquefaction of ice is correct (Comptes Rendus, 1850, vol.
98 페이지 - ... together, could ever have given it, and applicable to all the practical electrical purposes of life. To consider all the departments of electricity fully, would be to lose the argument for its fitness in subserving education in the vastness of its extent ; and it will be better to confine the attention to one application, as the electric telegraph, and even to one small part of that application, in the present case. Thoughts of an electric telegraph came over the minds of those who had been instructed...
165 페이지 - Group the first contains those experiments in whifh the , quantities of heat radiated from polished plates of different substances at a given temperature, are compared with the quantity radiated from a similar surface of lampblack at the same temperature. The result of this group of experiments is, that glass, alum, and selenite radiate about 98 per cent, of what lampblack does ; thick mica, 92 ; thin mica, 81 ; and rock-salt only 15 per cent.
101 페이지 - ... to discover and obey law, and by it to be bold in applying to the greatest what we know of the smallest. It teaches us, first by tutors and books, to learn that which is already known to others, and then by the light and methods which belong to science to learn for ourselves and for others ; so making a fruitful return to man in the future for that which we have obtained from the men of the past. Bacon in his instruction tells us that the scientific student ought not to be as the ant, who gathers...