Biographies of Distinguished Scientific Men: The history of my youth, an autobiography of Francis Arago.Bailly.Herschel.Laplace.Joseph Fourier.-ser. 2 Carnot.Malus.Fresnel.Thomas Young.James Watt

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Ticknor and Fields, 1859 - Scientists
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Page 448 - MAYNE REID'S JUVENILE BOOKS. THE PLANT HUNTERS. 1 vol. 16mo. Price 75 cents. THE DESERT HOME: OR, THE ADVENTURES OF A LOST FAMILY IN THE WILDERNESS. With fine Plates, $1.00. THE BOY HUNTERS. With fine Plates. Just published. Price 75 cents. THE YOUNG VOYAGEURS: OR, THE BOY HUNTERS IN THB NORTH.
Page 306 - The first law is, that the planets describe ellipses around the sun in their common focus; the second, that a line joining the planet and the sun sweeps over equal areas in equal times; the third, that the squares of the periodic times of the planets are proportional to the cubes of their mean distances from the sun.
Page 370 - ... in a year, the whole annual variation of the longitnde of the terrestrial perihelion amounts to 61". Laplace has considered two remarkable epochs in connection with this fact, viz, the epoch at which the major axis of the earth's orbit co-incided with the line of the equinoxes, and the epoch at which it stood perpendicular to that line. By calculation he found the former of these epochs to be referable to the year 4107 BC, and the latter to the year 1245 AD He accordingly suggested that the latter...
Page 306 - The die is cast; I have written my book; it will be read either in the present age or by posterity, it matters not which ; it may well await a reader, since God has waited six thousand years for an interpreter of his works...
Page 362 - Laplace has always remained at the height of his great mission ; his work will be read with respect so long as the torch of science shall continue to throw any light. ' The calculus of probabilities, when confined within just limits, ought to interest, in an equal degree, the mathematician, the experimentalist, and the statesman. From the time when Pascal and Fermat established its first principles, it has rendered, and continues daily to render, services of the most eminent kind. It is the calculus...
Page 414 - The same epoch, if I were not precluded from entering into too minute details, would present to us interesting experiments. We should find that it is not true that, at all degrees of the thermometer, the loss of heat of a body is proportional to the excess of its temperature above that of the medium...
Page 424 - Buffon, and Bailly, this part is immense. For France, they estimate the heat which escapes from the interior of the earth, at twenty-nine times in summer, and four hundred times in winter, the heat which comes to us from the sun. Thus, contrary to general opinion, the heat of the body which illuminates us would form only a very small part of that whose propitious influence we feel. This idea was developed with ability and great eloquence in the " Memoirs of the Academy," in " Les Epoques de la Nature...
Page 364 - It would appear that the words, il the first six months," deprive the phrase of the character of a commonplace expression of thanks, and convey a just appreciation of the importance and difficulty of the subject-matter. On the 5th Frimaire, in the year XI, the reading of some chapters of the volume which Laplace had dedicated to him was to the general " a new occasion for regretting that the force of circumstances had directed him into a career which removed him from the pursuit of science.
Page 22 - These mountains," said he to me, " form the resort of a band of highway robbers." I asked for the national guard, as I had the power to do so. My escort was supposed by the robbers to be an expedition directed against them, and they dispersed themselves a:t once over the rich plain which is watered by the Xucar.
Page 363 - Bear in mind, gentlemen, that in questions of science the authority of a thousand is not worth the humble reasoning of a single individual.

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