Report of the ... Meeting of the British Association for the Advancement of Science, Volume 64 |
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Contents
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Common terms and phrases
acid action amount appears Association Beiblätter body British called cause cent character Chem colour Committee connected consisting containing continued corresponding course curve depth described determined direction distribution Economics effect electric energy equal examination existence experiments fact feet force further give given heat important inches increase interest Italy June known length less light LL.D March matter means measured meeting method molecules Nature North Notes observations obtained original pass photographs physical position possible practical present pressure probably Proc produced Prof Professor Read recorded regard relation remains Report rock salt Secretary similar Society solution Spectrum standard steam surface taken temperature theory tion Ueber University whole Zeitschr
Popular passages
Page xxvii - To give a stronger impulse and a more systematic direction to scientific inquiry, — to promote the intercourse of those who cultivate Science in different parts of the British Empire, with one another and with foreign philosophers, — to obtain a more general attention to the objects of Science, and a removal of any disadvantages of a public kind which impede its progress.
Page 737 - ... the art of directing the great sources of power in nature for the use and convenience of man, as the means of production and of traffic in states.
Page 120 - As a unit of electromotive force, the international volt, which is the electromotive force that, steadily applied to a conductor whose resistance is one international ohm, will produce a current of one international...
Page 135 - As a unit of resistance, the international ohm, which is based upon the ohm equal to 10" units of resistance of the CGS system of electromagnetic units, and is represented by the resistance offered to an unvarying electric current by a column of mercury at the temperature of melting ice, 14.4521 grams in mass, of a constant cross-sectional area and of the length of 106.3 centimetres.
Page 135 - Ampere, which is one-tenth of the unit of current of the CGS system of electromagnetic units and which is represented sufficiently well for practical use by the unvarying current which, when passed through a solution of nitrate of silver in water, in accordance with a certain specification, deposits silver at the rate of 0.001118 of a gramme per second.
Page 120 - As a unit of work, the joule, which is equal to 107 units of work in the CGS system, and which is represented sufficiently well for practical use by the energy expended in one second by an international ampere in an international ohm. As a unit of power, the watt, which is equal to 10...
Page 137 - The anode is then immersed in the solution so as to be well covered by it and supported in that position ; the connections to the rest of the circuit are made.
Page 138 - ... to neutralise any free acid. The crystals should be dissolved with the aid of gentle heat, but the temperature to which the solution is raised should not exceed 30° C. Mercurous sulphate treated as described in 3 should be added in the proportion of about 12 per cent, by weight of the zinc sulphate crystals to neutralise any free zinc oxide remaining, and the solution filtered, while still warm, into a stock bottle.
Page 138 - Prepare a neutral saturated solution of pure ('pure recrystallized ') zinc sulphate by mixing in a flask distilled water with nearly twice its weight of crystals of pure zinc sulphate, and adding zinc oxide in the proportion of about 2 per cent. by weight of the zinc sulphate crystals to neutralize any free acid. The crystals should be dissolved with the aid of gentle heat, but the temperature to which the solution is raised should not exceed 30° C.
Page 120 - The anode should be a plate of pure silver some 30 square centimetres in area and 2 or 3 millimetres in thickness. This is supported horizontally in the liquid near the top of the solution by a platinum wire passed through holes in the plate at opposite corners. To prevent the disintegrated silver which is formed on the anode from falling on to the kathode, the anode should be wrapped round with pure filter paper, secured at the back with sealing wax.
Bibliographic information
| Title | Report of the ... Meeting of the British Association for the Advancement of Science, Volume 64 |
| Author | British Association for the Advancement of Science |
| Publisher | J. Murray, 1894 |
| Original from | the University of California |
| Digitized | 16 Apr 2007 |
| Export Citation | BiBTeX EndNote RefMan |