Hunt's Hand-book to the Official Catalogues: An Explanatory Guide to the Natural Productions and Manufactures of the Great Exhibition of the Industry of All Nations, 1851, Band 1Robert Hunt Spicer brothers, and W. Clowes & sons, 1851 |
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Seite 2
... objects of taste are left to speak their own language - to be their own interpreters . The Crystal Fountain ( 20 ) of the Messrs . F. and C. Osler is manufactured of the purest flint - glass , which is tech- nically called " crystal ...
... objects of taste are left to speak their own language - to be their own interpreters . The Crystal Fountain ( 20 ) of the Messrs . F. and C. Osler is manufactured of the purest flint - glass , which is tech- nically called " crystal ...
Seite 3
... object of this being to secure a total reflection of all the light which falls upon the surface . By this means the base of every prism becoming a reflect- ing surface , great brilliancy is obtained , and the metal sup- ports are ...
... object of this being to secure a total reflection of all the light which falls upon the surface . By this means the base of every prism becoming a reflect- ing surface , great brilliancy is obtained , and the metal sup- ports are ...
Seite 4
... object is to prevent rapid evaporation from the plant , which requires a humid atmosphere for its existence , to protect the leaves from the obstructions occasioned by the lodging of particles of solid carbon on them , and to allow the ...
... object is to prevent rapid evaporation from the plant , which requires a humid atmosphere for its existence , to protect the leaves from the obstructions occasioned by the lodging of particles of solid carbon on them , and to allow the ...
Seite 7
... object of this is to per- oxidise all extraneous matters ; if , however , this is used too largely , it imparts a pink colour to the glass , which goes on increasing under the influence of light . In some instances lead is employed ...
... object of this is to per- oxidise all extraneous matters ; if , however , this is used too largely , it imparts a pink colour to the glass , which goes on increasing under the influence of light . In some instances lead is employed ...
Seite 13
... object to be obtained by the use of lenses in a light- house is the same as that obtained by the use of reflectors . Each apparatus effects the same result by different means , collecting the rays which diverge from a point , called the ...
... object to be obtained by the use of lenses in a light- house is the same as that obtained by the use of reflectors . Each apparatus effects the same result by different means , collecting the rays which diverge from a point , called the ...
Andere Ausgaben - Alle anzeigen
Hunt's Hand-book to the Official Catalogues: An Explanatory Guide to ..., Band 1 Robert Hunt Keine Leseprobe verfügbar - 1851 |
Hunt's Hand-book To The Official Catalogues: An Explanatory Guide To The ... Robert Hunt Keine Leseprobe verfügbar - 2023 |
Häufige Begriffe und Wortgruppen
acid action apparatus appears applied arrangement attached balance bars beautiful become called carbon carried cause centre chemical Class clock collection colour combination common connection considerable consists construction containing copper crystals described direction distance effect employed equal examples exhibited Exhibitors feet fixed force four frame give given glass ground hand heat important improved inches instrument iron kinds lead less light lime machine magnet manner manufacture material matter means measured metal motion move nature notice object observation obtained operation ordinary passing patent piece placed plant plate portion position prepared present principle produced quantity removed salt scale seen separated shown side silver solution South specimens spring steel substance sulphuric surface tion tons tube turning usually variety various vessels vibration weight wheels whole wire wood
Beliebte Passagen
Seite 413 - ... the dead march in Saul, and other solemn and pathetic strains, when executed with taste and feeling by a master a little accustomed to the touch, excited equal wonder and delight...
Seite 6 - ... the plate. These done, the cuvette is wound up to a sufficient height by a crane, and then, by means of another simple piece of mechanism, is swung over the upper end of the casting table...
Seite 164 - The flax fibre, soaked in the solution of sub-carbonate of soda, was no sooner immersed in the vessel containing the acidulated water than its character became at once changed from that of a damp, rigid aggregation of flax to a light, expansive mass of cottony texture, increasing in size like leavening dough, or an expanding sponge. This...
Seite 399 - Then dip it into a vessel of water, dry it lightly with blotting-paper, and finish drying it at a fire, which will not injure it even if held pretty near : or else it may be left to dry spontaneously. All this is best done in the evening by candlelight. The paper so far prepared the author calls iodized paper, because it has a uniform pale yellow coating of iodide of silver.
Seite 74 - Thus for a very long period this beautiful colour continued to be manufactured from a mineral whose composition was unknown. It was not till the year 1733 that the Swedish chemist Brandt obtained from this ore the metal which he called cobalt, and proved that the colouring matter is the protoxide.
Seite 82 - The principle on which all locks depend, is the application of a lever to an interior bolt, by means of a communication from without ; so that, by means of the latter, the lever acts upon the bolt, and moves it in such a manner as to secure the lid or door from being opened by any pull or push from without.
Seite 226 - ... exceed one thousand tons burden, use anchors formed of wood ; and, taking his hint from them. Captain Vidal drew out a plan, and had an anchor constructed from it under his own inspection, which never failed us even in the severest weather that we afterwards experienced. A delineation of it is annexed, on the scale of a quarter of an inch to a foot. A Two pigs of ballast. B The stock, ring, and part of the shank of the iron anchor; that portion of the latter represented by dots passed down the...
Seite 6 - The glass is prevented from running off the sides of the table by ribs of metal, one of which is placed along the whole length of each side, their depth being the exact measure which it is desired to give to the thickness of the glass. A similar rib, attached to a cross piece, is temporarily held, during the casting, at the lower end of the table. When the whole contents of the crucible have been delivered, a large hollow copper cylinder, which has been made perfectly true and smooth in a turning...
Seite 399 - The paper so far prepared the author calls iodized paper, because it has a uniform pale yellow coating of iodide of silver. It is scarcely sensitive to light, but, nevertheless, it ought to be kept in a portfolio or a drawer until wanted for use. It may be kept for any length of time without spoiling or undergoing any change, if protected from the light.