The Edinburgh New Philosophical Journal: Exhibiting a View of the Progressive Discoveries and Improvements in the Sciences and the Arts, Volumen36A. and C. Black, 1844 |
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Página 93
... heat from them . The needles in the stars are in planes vertical to the plane of the horizon . On turning them through 90 ° , so as to be parallel to it , the rotation entirely ceases . Two slips of watch - spring , 3 inches long , of ...
... heat from them . The needles in the stars are in planes vertical to the plane of the horizon . On turning them through 90 ° , so as to be parallel to it , the rotation entirely ceases . Two slips of watch - spring , 3 inches long , of ...
Página 94
... Heat one of those weights 20 ° degrees above the other , and replace it in its scale , then it appears 100th or 200ths of a grain lighter than at the first weighing , occasioned by the streams of air now rising from its surface . On the ...
... Heat one of those weights 20 ° degrees above the other , and replace it in its scale , then it appears 100th or 200ths of a grain lighter than at the first weighing , occasioned by the streams of air now rising from its surface . On the ...
Página 97
... heating of thermo - electric bars at temperatures above 300 ° ; but it is so very slow , that forty days of the most energetic action of antimony and bismuth couples is necessary to render the first trace of a dull fracture distinctly ...
... heating of thermo - electric bars at temperatures above 300 ° ; but it is so very slow , that forty days of the most energetic action of antimony and bismuth couples is necessary to render the first trace of a dull fracture distinctly ...
Página 98
... heat . The grain of some of the specimens tried , was of a fine unnatural texture , occasioned by casting in a cold metal mould , yet the annealing made no alteration in this grain . Rolled zinc , where the crystals have been bruised ...
... heat . The grain of some of the specimens tried , was of a fine unnatural texture , occasioned by casting in a cold metal mould , yet the annealing made no alteration in this grain . Rolled zinc , where the crystals have been bruised ...
Página 99
... heating and immersion ; they become hollow in the centre , and full of fissures ; zinc bars con- tinue solid under the same treatment . The following metals lose density by annealing : -Bismuth , zinc , lead , tin , copper , silver ...
... heating and immersion ; they become hollow in the centre , and full of fissures ; zinc bars con- tinue solid under the same treatment . The following metals lose density by annealing : -Bismuth , zinc , lead , tin , copper , silver ...
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Otras ediciones - Ver todas
The Edinburgh New Philosophical Journal: Exhibiting a View of the ..., Volumen17 Vista completa - 1863 |
The Edinburgh New Philosophical Journal: Exhibiting a View of the ..., Volumen14 Vista completa - 1833 |
The Edinburgh New Philosophical Journal: Exhibiting a View of the ..., Volumen9 Vista completa - 1859 |
Términos y frases comunes
acid acinus ammonia angles animals antimony appears ascertain atmosphere beds Beechy bismuth bones Brongniart carboniferous cause cells character circumstances coal colour communication Comrie considerable countries Crustacea crystalline cuticle Cycadeous Cyclopteris d'Orbigny decks deposited depth direction distance Dr Hales earthquake Edinburgh equal Esquimaux exist experiments facts Fauna feet felt Ferns flames forests formation fossils genera genus geographical geology glacier guano heat improvements inches inhabitants island Knightswood latter leaf-bases leaflets Lepidodendron less lime limestone lower marble masses means Melville Peninsula Mer de Glace metal miles mode natural nearly Neuropteris observed obtained occurred Otopteris Pecopteris phenomena plants portion present prism produced quantity rachis rain refracted regard remarkable ribs rocks shew shewn ships shocks side Sigillaria species specimens Sphenopteris spiral strata superior conjunction surface temperature threads of cuticle tion triangle tubes vegetable ventilation vessels volcanic
Pasajes populares
Página 389 - Year Book of Facts in Science and Art, exhibiting the most important Discoveries and Improvements in Mechanics, Useful Arts, Natural Philosophy, Chemistry, Astronomy, Meteorology, Zoology, Botany, Mineralogy, Geology, Geography, Antiquities, etc.
Página 212 - CATLOW.-POPULAR CONCHOLOGY; Or, the Shell Cabinet arranged: being an Introduction to the Modern System of Conchology : with a sketch of the Natural History of the Animals, an account of the Formation of the Shells, and a complete Descriptive List of the Families and Genera. By AGNES CATLOW.
Página 211 - Observations on Days of Unusual Magnetic Disturbance, made at the British Colonial Magnetic Observatories under the Departments of the Ordnance and Admiralty, printed by the British Government under the Superintendence of Lieut.-Col.
Página 309 - But the most uncommon and unsightly ornamental fashion, adopted by some of both sexes, is their having the under-lip slit, or cut, quite through, in the direction of the mouth, a little below the swelling part. This incision, which is made even in the sucking children, is often above two inches long, and either by its natural retraction, when the wound is fresh, or by the repetition of some artificial management, assumes the true shape of lips, and becomes so large as to admit the tongue through.
Página 206 - The fruit at first contains a clear insipid fluid, with which travellers allay their thirst ; afterwards this same liquor becomes milky and sweet, and it changes its taste by degrees as it acquires solidity, till at last it is almost as hard as Ivory. The liquor contained in the young fruits turns acid if they are cut from the tree and kept some time.
Página 392 - WILLIAM EDWARD NEWTON, of the Office for Patents, 66 Chancery Lane, in the county of Middlesex, civil engineer, being a communication from abroad, " certain improvements in machinery for preparing and combing wool, hair, and other fibrous substances.
Página 144 - ... of man is taxed to discover new sources of wealth, maintenance, and occupation ; and we find, under the dispensations of an all-wise Providence, that at suitable seasons resources are unveiled which have been long provided but concealed until the fit occasion presents itself. Amongst the numerous administrations of the same wise and merciful design, it is not unreasonable to believe that the...
Página 215 - improvements in the construction of boilers, part of which improvements is applicable for regulating the supply of water and other liquids." — 23d November 1843. 17. To WILLIAM PROSSER junior, of Shaftsbury Terrace, Pimlico, gentleman, " improvements in the construction of roads, and in carriages to run thereon."— 23d November 1843.
Página 171 - Ackworth, then first Lord of the Admiralty, who went down to Woolwich to see its performance in ventilating the hold of HMS Kinsale." It is but fair, however, to mention, in justice to the ingenious and philanthropic Dr Desaguliers, that he complains of the great difficulty he had in getting a proper trial of his machine by the Lords of the Admiralty in 1740. Exper. Phil. vol. ii. 4to. The wind-fan, or...
Página 206 - The Indians cover their cottages with the leaves of this most beautiful Palm. The fruit at first contains a clear insipid fluid, by which travellers allay their thirst ; afterwards this same liquor becomes milky and sweet, and it changes its taste by degrees as it acquires solidity, till at last it is almost as hard as ivory. The liquor contained in the young fruits becomes acid if they are cut from the tree and kept some time. From the...