 | Perry Fairfax Nursey - 1840 - 640 Seiten
...and excess of oxygen. It requires from 50 to 60 hours application of a rapid, intense, and equal beat to effect the perfect fusion of the materials and...from a metal which has been produced under all the favourable circumstances before described. It is, therefore, to be inferred, that the most homogeneous... | |
 | 1840 - 416 Seiten
...Aug. 18, 1840. of salts are skimmed off as they rise to the surface. The progress of fusion cannot be resorted to, lest the intensity of heat requisite...from a metal which has been produced under all the favourable circumstances before described. It is, therefore, to be inferred, that the most homogeneous... | |
 | 1840 - 812 Seiten
...furnace to be closed, the remainder of the metal in the crucible becomes curdy and full of striie, and thus unfit for use. It is the same with the glass...the blowpipe when they are made from a metal which his been produced under all the favourable circumstances before described. It is, therefore, to be... | |
 | 1840 - 644 Seiten
...furnace to be closed, the remainder of the metal in the crucible becomes curdy and full of stria;, and thus unfit for use. It is the same with the glass...the mercury. These tubes will only bear the heat of {lie blow-pipe when they are made from a metal which has been produced under all the favourable circumstances... | |
 | 1841 - 912 Seiten
...mechanical means for blending the materials during fusion be resorted to, lest the intensity of the heat requisite for the production of a perfectly homogeneous...mercury. These tubes will only bear the heat of the blow pipe when they are made from a metal which has been produced under all the favourable circumstances... | |
 | Institution of Civil Engineers (Great Britain) - 1848 - 652 Seiten
...furnace to be closed, the remainder of the metal in the crucible Flint Plate. Klaslicity of Klint Glass. becomes curdy and full of striae, and thus unfit for...from a metal which has been produced under all the favourable circumstances before described. It is, therefore, to be inferred, that the most homogeneous... | |
 | Institution of Civil Engineers (Great Britain) - 1848 - 570 Seiten
...the metal in the crucible Flint Plate. Elasticity of Flint Glass. becomes curdy and full of stride, and thus unfit for use. It is the same with the glass...from a metal which has been produced under all the favourable circumstances before described. It is, therefore, to be inferred, that the most homogeneous... | |
 | 1840 - 632 Seiten
...furnace to be closed, the remainder of the metal in the crucible becomes curdy and fall of stria:, and thus unfit for use. It is the same with the glass...from a metal which has been produced under all the favourable circumstances before described. It is, therefore, to be inferred, that the most homogeneous... | |
 | 1841 - 466 Seiten
...furnace to be closed, the remainder of the metal in the crucible becomes curdy and full of strias, and thus unfit for use. It is the same with the glass...mercury. These tubes will only bear the heat of the blow pipe when they are made from a metal which has been produced under all the favourable circumstances... | |
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... and thus unfit for use. It is the same with the glass made for the flat bore tubes for thermometers, which are never annealed, because the smoke of the annealing furnace would render the interior of the bore unfit for the reception of the mercury.... 