Lecture-Notes On Physics - Tapa blanda

M. Mayer, Alfred

Tapa blanda

ISBN 10: 1408615339 ISBN 13: 9781408615331

Editorial: Read Books, 2008

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LECTURE-NOTES BY ALFRED M. MAYER, - PART I.-Containing 4 I. DEFIRITION A S N D INTRODUC TO T T IO HE N I NDUCT N I E V TH E O D. g 11. INSTRUM U I S G ED I T N S PR ECIS N E E ASURLEYENTS. 8 111. NETHOD OF S PRECISION. 8 IV. A x N E ROSF EXPRESS NQA LAW-LAW E VOLVED FROM TIIE NUMERICAL RESULTS OF OBSERVATION A S ND EXPNRIDIKNTS. g V. THEG ENERALP ROPERTI O E F SM ATTER-THE C ONSTITUTION OF NATTER ACCOI DINQT O THE NOLECUL H A Y R P OTIIESIS. 8 VI. CAP LLARY A TTRACTION. PHILADELPHIA FROM THE JOURNAL OF THF, FRANKLIN INSTITUTE. 1868. rlWho hath measured the waters in the hollow of His hand, and meted out heaven with the span, and comprehended the dust of the earth in a measure. and weighed the mountains in scales, and the hills in a balance ISAIAH XI. 12. . Thou hast ordered all things in measure and number and weight. BOOK ox THE WISDOM O F SOLOMONch, ap. xi. 20. ltoughttobe eterndlly resolvedand settled that the understanding cannot decide otherwise than by induction, and by a legitimate form of it. rLFrancis of Verulam thought thus, and such is the method which he determined within himself, and which he thought it concerned the living and posterity to know. Let no one enter here who is ignorant of geometry. PLATO. LECTURE-NOTES ON PHYSICS. S I. Denitions and Introduction to the Inductive dlethod. Physical science is the knowledge of the laws c of the phenomena b of matter a. . a. Matter is that which affscts the senses. It always presents the three dimensions, or, in other words, occupjes space. It exists throughout all known space as a highly elastic and rare medium called ether proof of this given in optics, and in this medium circulate dense bodies of spheroid forms, separated from each other by distances which are immense when compared with the size of these bodies such are the planets and asteroids of celestial space, and the earth on which we live. Shooting-stars or Aerolites are celestial bodies of smaller size, which at certain periods November 13th and August 10th cross the orbit of the earth. Comets are highly rarified nebulous bodies of various and changing forms, circulating in orbits which are so eccentric, that they are not visible to us in their remote situations while at other times they are much nearer to the sun than any of the planets. The comet of 1680, when nearest to the sun, was only one-sixth of the suns diameter from his surface. The motion of comets retarded by the resistance of the ether The above is a statement of all known matter, and physical science is that branch of knowledge which considers all the various phenomena which this matter presents. From the investigations of chemists on terrestrial matter, and from the spectroscopic examination of celestial bodies, all matter can be resolved into at present sixty. three elements. According to the atomic theory see V. all matter consists of exceedingly minute, absolutely Pard and unchangeable atoms, separated from each other by distances which are very great when compared with the dimensions of these atoms. As in interplanetary space exists the rare ether, so interatomic 3 4 Lecture-Notes on Pi ysics. space is occupied by the same elastic medium. Proofs of above given under Undulatory Theory of Light and I-Ieat. Natter exists in the three states of solids, liquids, and gases. Each organ of our senses is so constrt ctedth atit can only take cognizance of those effects which it was specially designed to receive. Thus, through the eye we perceive light, but not sound and the ear does not take cognizance of light, nor of flavor, nor of odor. All the senses are modifications of touch. In touch, taste, and smell the organs of these senses come in contact with the matter that we touch, taste, and smell...

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