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Seite 21 - A small piece of pure potash, which had been exposed for a few seconds to the atmosphere, so as to give conducting power to the surface, was placed upon an insulated disc of platina, connected with the negative side of the battery, of the power of...
Seite 44 - UNDULATORY THEORY OF OPTICS. Designed for the Use of Students in the University. New Edition. Crown 8vo. 6s. 6d. ON SOUND AND ATMOSPHERIC VIBRATIONS. With the Mathematical Elements of Music. Designed for the Use of Students in the University. Second Edition, Revised and Enlarged. Crown 8vo.
Seite 42 - AM)— EXPERIMENTAL MECHANICS. A Course of Lectures delivered at the Royal College of Science for Ireland. By RS BALL, AM, Professor of Applied Mathematics and Mechanics in the Royal College of Science for Ireland.
Seite 44 - Taylor. — SOUND AND MUSIC : A Non-Mathematical Treatise on the Physical Constitution of Musical Sounds and Harmony, including the Chief Acoustical Discoveries of Professor Helmholtz. By SEDLEY TAYLOR, MA, late Fellow of Trinity Colledge, Cambridge.
Seite 21 - Under these circumstances a vivid action was soon observed to take place. The potash began to fuse at both its points of electrization. There was a violent effervescence at the upper surface; at the lower, or negative surface, there was no liberation of elastic fluid; but small globules having a high metallic lustre, and being precisely similar in visible characters to quicksilver, appeared, some of which burnt with explosion and bright flame, as soon as they were formed, and others remained, and...
Seite 46 - A HISTORY OF THE MATHEMATICAL THEORY OF PROBABILITY, from the Time of Pascal to that of Laplace. 8vo.
Seite 40 - ... accuracy pervading the work throughout, speak of the watchful editorial supervision which has been given to every scientific detail. Nothing can well exceed the clearness and delicacy of the illustrative woodcuts. Altogether, the work may be said to have no parallel, either in point of fulness or attraction, as a popular manual of physical science.
Seite 31 - Suppose some stars have very large coronal atmospheres ; if the area of the coronal atmosphere is small compared with the area of the section of the true disk of the sun, of course we shall get an ordinary spectrum of the star ; that is to say, we shall get the indications of absorption which make us class the stars apart ; we shall get a continuous spectrum barred by dark lines. But suppose that the area of the coronal atmosphere is something very considerable indeed, let us assume that it has an...
Seite 41 - NATURAL PHILOSOPHY. NATURAL PHILOSOPHY FOR BEGINNERS. By I. TODHUNTER, MA, FRS Part I. The Properties of Solid and Fluid Bodies. i8mo.
Seite 44 - COURSE OF PRACTICAL INSTRUCTION IN ELEMENTARY BIOLOGY. By Professor HUXLEY, FRS , assisted by HN MARTIN, MB, D.Sc. New Edition, revised. Crown 8vo. 6s. HUXLEY and PARKER- ELEMENTAR Y BIOLOGY. PART II. By Professor HUXLEY, FRS, assisted by — PARKER. With Illustrations. [In preparation. JEVONS— THE PRINCIPLES OF SCIENCE.