The Magazine of Science, and Schools of Art, Том 1D. Francis, 1842 |
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Страница 4
... weights , producing ten different degrees of compression , distinguished from each other numerically , and having a ... weight of the required figure upon the collapsing vessel at either station , and the same figure will be represented ...
... weights , producing ten different degrees of compression , distinguished from each other numerically , and having a ... weight of the required figure upon the collapsing vessel at either station , and the same figure will be represented ...
Страница 7
... weight : the diameter of the largest used in the deepest mines of Austria , is one inch and a half , the strength of which is little less than that of a solid iron bar of the same diameter . The usual weight lifted is 1,000 pounds ; and ...
... weight : the diameter of the largest used in the deepest mines of Austria , is one inch and a half , the strength of which is little less than that of a solid iron bar of the same diameter . The usual weight lifted is 1,000 pounds ; and ...
Страница 24
... weight of boiling water ; and also , in two parts of water , one part of Spanish liquorice . The two solutions are to be mixed whilst warm ; and incorporated , by a little at a time , with one part of the finest ivory - black , by the ...
... weight of boiling water ; and also , in two parts of water , one part of Spanish liquorice . The two solutions are to be mixed whilst warm ; and incorporated , by a little at a time , with one part of the finest ivory - black , by the ...
Страница 39
... weight of pure , white , fine pulp , may be procured from 100 weight of the raw or the native turf . • Returning now to the solution of the potass , which has carried off the geine , & c . , and which is chiefly , in fact , a geinate of ...
... weight of pure , white , fine pulp , may be procured from 100 weight of the raw or the native turf . • Returning now to the solution of the potass , which has carried off the geine , & c . , and which is chiefly , in fact , a geinate of ...
Страница 42
... weight , the bearings , and the complexity of their machinery , as the ultimate application of that force will allow . We are led to these remarks by a most ridiculous machine , now exhibiting in London , called " The Aellopodes , " the ...
... weight , the bearings , and the complexity of their machinery , as the ultimate application of that force will allow . We are led to these remarks by a most ridiculous machine , now exhibiting in London , called " The Aellopodes , " the ...
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acid action ammonia animal appear become blue bodies boiling camphor carbonic carbonic acid centre cold color common copper cylinder degree diameter dissolved effect electricity employed engraving equal experiments exposed feet fire flame fluid glass ground heat hole hydrogen inches instrument iron light lime linseed oil machine magnet mandril marble matter melted mercury metal method mixed mixture motion mould muriatic acid nitric acid object observed obtained ounce oxygen painting paper pass PHOTOGENIC DRAWING piece plants plate polished portion potash produced Prussian blue putty powder quantity rubbed salt screw seen side silver slider soap solution specific gravity spirits of wine steam steel stone substance sugar sulphate sulphur sulphuric acid surface temperature thick tint tion tube turpentine varnish vegetable vessel weight wheel whole wire wood yellow
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Страница 143 - ... time that the axle describes a small one, therefore the power is increased in the same proportion as the circumference of the wheel is greater than that of the axle. If the velocity of the wheel is...
Страница 203 - Coal mines are overhung. The roof is covered as with a canopy of gorgeous tapestry, enriched with festoons of most graceful foliage, flung in wild irregular profusion over every portion of its surface. The effect is heightened by the contrast of the coal-black colour of these vegetables with the light ground-work of the rock to which they are attached.
Страница 203 - A vapour sometime like a bear or lion, A towered citadel, a pendent rock, A forked mountain, or blue promontory With trees upon't that nod unto the world And mock our eyes with air.
Страница 198 - The climate of the moon must be very extraordinary : the alternation being that of unmitigated and burning sunshine, fiercer than an equatorial noon, continued for a whole fortnight, and the keenest severity of frost, far exceeding that of our polar winters, for an equal time.
Страница 38 - ... he could, however, distinguish blues when they were light. Dr. Nichols has recorded a case where a person, who was in the navy, purchased a blue uniform coat and waistcoat, with red breeches to match the blue.
Страница 102 - Dissolve five or six bits of gum mastic, each the size of a large pea, in as much spirits of wine as will suffice to render it liquid ; and in another vessel dissolve as much isinglass, previously a little softened in water (though none of the water must be used), in French brandy or good rum, as will make a two-ounce phial of very strong glue, adding two small bits of gum albanum, or ammoniacum, which must be rubbed or ground till they are dissolved.
Страница 352 - Pour on the engraving boiling water from a teakettle until the salt and lemon-juice be all washed off; the engraving will then be perfectly clean, and free from stains. It must be dried on the board, or on some smooth surface, gradually. If dried by the fire or the sun it will be tinged with a yellow colour.
Страница 17 - An Account of a Method of Copying Paintings upon Glass, and of making Profiles by the Agency of Light upon Nitrate of Silver; with Observations by H. Davy.
Страница 336 - A man in a boat pulling a rope attached to a large ship, seems only to move the boat : but he really moves the ship a little, for...
Страница 203 - ... of their primeval life; their scaly stems, and bending branches, with their delicate apparatus of foliage, are all spread forth before him ; little impaired by the lapse of countless Ages, and bearing faithful records of extinct systems of vegetation, which began and terminated in times of which these relics are the infallible Historians.