The London, Edinburgh and Dublin Philosophical Magazine and Journal of ScienceTaylor & Francis, 1870 |
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Página 5
... sufficient to upset that theory . Universal experience taught mankind , long before ther- mometers were invented , that snow is one of the most perfect non - conductors of heat . Observations in the arctic regions have proved that a ...
... sufficient to upset that theory . Universal experience taught mankind , long before ther- mometers were invented , that snow is one of the most perfect non - conductors of heat . Observations in the arctic regions have proved that a ...
Página 7
... sufficiently shows the fallacy of this experiment . A cylindrical stick of sealing - wax half an inch in diameter ... sufficient answer to Canon Moseley to deny alto- gether the relevancy of his observations on the shearing - force of ...
... sufficiently shows the fallacy of this experiment . A cylindrical stick of sealing - wax half an inch in diameter ... sufficient answer to Canon Moseley to deny alto- gether the relevancy of his observations on the shearing - force of ...
Página 24
... sufficient to give here only the last , mean numbers : - Length of the spark . 1 millim . Deflections . 2 millims . 3 ,, The disk positive . The disk negative . 12.0 8.1 26.2 19.2 47.5 37.6 From Experiments 22 to 24 , it follows with ...
... sufficient to give here only the last , mean numbers : - Length of the spark . 1 millim . Deflections . 2 millims . 3 ,, The disk positive . The disk negative . 12.0 8.1 26.2 19.2 47.5 37.6 From Experiments 22 to 24 , it follows with ...
Página 30
... sufficiently ex- plained by the fact that the formation of sparks commences with this current . When the poles are in an enclosed space , from which the air can be exhausted , the electromotive force of the disjunction diminishes in ...
... sufficiently ex- plained by the fact that the formation of sparks commences with this current . When the poles are in an enclosed space , from which the air can be exhausted , the electromotive force of the disjunction diminishes in ...
Página 42
... sufficient to prove that the discharge which , with a good conducting circuit only inter- rupted by a break , is alternating , is changed into a simple one by inserting a test - plate ; for while in the first case the spark is ...
... sufficient to prove that the discharge which , with a good conducting circuit only inter- rupted by a break , is alternating , is changed into a simple one by inserting a test - plate ; for while in the first case the spark is ...
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Términos y frases comunes
amylamine atmosphere body calculated Canon Moseley carbonic acid cause centims chemical chromosphere comets compressed consequently constant containing copper curve cylinder deflection density descend determined diameter difference direction disk distance effect electricity electromotive force equal equator equatorial equilibrium erbia experiments film force formula fossils galvanometer gases glacier glass greater Gulf-stream Hence hydrogen inches increase iron layer length liquid magnetic magneto-rotatory power manometer mass means mercury metal method metre millims molecular molecules Moseley's motion needle Neocomian observed obtained ocean ocean-currents Oolite oxide oxyhydrogen flame particles pass photosphere piston plate polar regions poles portion pressure prism produced Professor ratio refractive refractive index reservoir resistance salt shear solid solution specific gravity spectrum stopcock substance sulphate sulphuric acid supersaturated supposed surface temperature theory thick tion tube unduloid vapour velocity vis viva wave-length weight wire
Pasajes populares
Página x - Other Worlds than Ours ; The Plurality of Worlds Studied under the Light of Recent Scientific Researches.
Página 311 - Phillips, and contains 200 Specimens, in a cabinet, with 5 trays, comprising the following, viz. :— MINERALS which are either the components of Rocks, or occasionally imbedded in them: — Quartz, Agate, Chalcedony, Jasper, Garnet, Zeolite, Hornblende, Augite...
Página 231 - MINERALS : these are found in masses or beds, in veins, and occasionally in the beds of rivers. Specimens of the following metallic ores are put in the Cabinet: Iron, Manganese, Lead, Tin, Zinc, Copper, Antimony, Silver, Gold, Platina, ек.
Página 311 - Rocks. SECONDARY FOSSILS, from the Trias, Lias, Oolite, Wealden, and Cretaceous Groups. TERTIARY FOSSILS, from the Woolwich, Barton, and Bracklesham Beds, London Clay, Crag, &c. In the more expensive Collections some of the Specimens are rare, and all more select.
Página x - Notes of a Course of Nine Lectures on Light, delivered at the Royal Institution. , By John Tyndall, FRS Crown 8vo. is. sewed, or is. 6d. cloth. Notes of a Course of Seven Lectures on Electrical Phenomena and Theories, delivered at the Royal Institution.
Página 311 - Guineas each, with every requisite to assist those commencing the study of this interesting science, a knowledge of which affords so much pleasure to the traveller in all parts of the world. * A collection for Five Guineas which will illustrate the recent works on Geology by Ansted, Buckland.
Página 240 - The vapor is taken from the surface water; the surface water thereby becomes more salt, and, under certain conditions, heavier ; when it becomes heavier, it sinks ; and hence we have, due to the salts of the sea, a vertical circulation, namely, a descent of heavier — because salter and cooler — water from the surface, and an ascent of water that is lighter — because it is not so salt — from the depths below.
Página 231 - Ludlow, Devonian, and Carboniferous Rocks. SECONDARY FOSSILS, from the Trias, Lias, Oolite, Wealden, and Cretaceous Groups. TERTIARY FOSSILS, from the Woolwich, Barton, and Bracklesham Beds, London Clay, Crag, &c.
Página 164 - Moseley replied as follows : — " To this there is the obvious answer that radiant heat does find its way into ice as a matter of common observation, and that it does not melt it except at its surface. Blocks of ice may be seen in the windows of iceshops with the sun shining full upon them, and melting nowhere but on their surfaces. And the experiment of the icelens shows that heat may stream through ice in abundance (of • Phil. Hag., S. 4, vol. x., p. 303. t Proceedings of the Bristol Naturalists'...
Página 151 - Barometers with Brass Scales, extending from the Cistern to the top of the Mercurial Column, to reduce the observation to 32° Fahrenheit.