Handbook of Chemistry ..

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Seite 168 - ... between the poles (not as yet magnetized by the electric current), so that the polarized ray should pass through its length; the glass acted as air, water, or any other indifferent substance would do; and if the eye-piece were previously turned into such a position that the polarized...
Seite 171 - ... cubic feet of azote, which would be mixed with the carbonic acid so produced. This volume of mixed gases would escape from the fuel at a very high temperature, and would in this state pass into the chimney.
Seite 439 - ... galvanometer shows the same deflection whether the circuit be closed by a metallic conductor or by a liquid — a further rise of intensity does not accelerate the decomposition.] Aqueous solution of iodide of potassium may be decomposed by a current of the smallest tension; next in order of facility come fused chloride of silver, fused protochloride of tin, fused chloride of lead, fused iodide of lead, water containing hydrochloric acid, water containing sulphuric acid. That the chloride of...
Seite 179 - I placed upon a plate of copper, blue, red, and orange coloured glasses, pieces of crown and flint glass, mica, and a square of tracing paper. These were allowed to remain in contact half an hour. The space occupied by the red glass was well marked, that covered by the orange was less distinct, but the blue glass left no impression ; the shapes of the flint and crown glass were well made out, and a remarkably strong impression where the crown...
Seite 518 - ... its diamagnetic relations being in no way affected. If the crystal be broken up, or if it be fused and re-solidified, and the metal then subjected to the action of the magnet, the diamagnetic phenomena remain, but the magne-crystallic results disappear, because of the confused and opposing crystalline condition of the various parts. If an ingot of bismuth be broken up and fragmentary plates selected which are...
Seite 168 - ... the lamp-flame became visible, and continued so as long as the arrangement continued magnetic. On stopping the electric current, and so causing the magnetic force to cease, the light instantly disappeared ; these phenomena could be renewed at pleasure, at any instant of time, and upon any occasion, showing a perfect dependence of cause and effect.
Seite 149 - ... Since the force of universal attraction depends wholly on the mass of the attracting bodies and not at all upon their quality, while in chemical combination the latter is of the utmost importance, Buffon endeavoured to explain this difference by supposing that the centres of gravity of the atoms of heterogeneous substances might, in consequence of their difference of form, approach one another within different distances — and therefore, since the force of gravitation varies inversely as the...
Seite 287 - The first object was obtained by the successive action of two air-pumps; the first having a piston of one inch in diameter, by which the gas to be condensed was forced into the cylinder of the second pump, the diameter of whose piston was only half an inch. The tubes into which the air, thus further condensed, was made to pass, were of green bottle glass, from...
Seite 100 - Mercuric iodide separates from solution, and likewise sublimes at a very gentle heat, in scarlet tables belonging to the dimetric system; but when sublimed at a higher temperature in sulphur-yellow, rhombic tables of the monoclinic system. The red crystals turn yellow when heated, and resume their red tint on cooling. The yellow crystals obtained by sublimation retain their colour when cooled ; but, on the slightest rubbing or stirring with a pointed instrument, the part which is touched turns scarlet,...
Seite 112 - Similarly brandy kept in casks is said to contain a greater proportion of spirit in the upper, and of water in the lower part. Here again the question may be raised whether the cask may have been filled with successive portions of different strengths which may have disposed themselves in layers one above another.

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