 | 1829 - 906 oldal
...impurities,* and then exposing it, upon a platina tray, under an inverted pot, to the heat of a wind furnace. The ingot, on being taken out of the furnace, is immediately...flattened into leaf, drawn into wire, or submitted to any ot the processes of which the most ductile metals are capable. The perfection of the methods above... | |
 | 1830 - 318 oldal
...metal, be reduced, by the processes of heating and forging, to any other form that may be required. It may then be flattened into leaf, drawn into wire,...ductile metals are capable. The perfection of the above method of giving complete malleability to platina is proved by comparing the specific gravity... | |
 | William Henry - 1831 - 642 oldal
...course o( a few hours, will entirely dissolve the flux left adhering to the surface. The ingots may be flattened into leaf, drawn into wire, or submitted...processes, of which the most ductile metals are capable. Platinum has the following properties: It isa white metal, resembling silver in colour, but greatly... | |
 | Francis Lieber, Edward Wigglesworth, Thomas Gamaliel Bradford - 1832 - 708 oldal
...It is then to he exposed upon a platina tray, under an inverted pot, to the heat of a windfurnace. The ingot may then be flattened into leaf, drawn into...of which the most ductile metals are capable. The mean specific gravity of the metallic cake of platina powder, when taken from the press, is 10 ; that... | |
 | Francis Lieber, Edward Wigglesworth - 1832 - 656 oldal
...It is then to be ex]>osed upon a platina tray, under an inverted pot, to the heat of a windfurnace. The ingot may then be flattened into leaf, drawn into wire, or submitted to anyofthe processes of which the most ductile metals are capable. The mean sjwcitic gravity of the metallic... | |
 | Royal Society (Great Britain) - 1833 - 502 oldal
...metal, be reduced by the processes of heating and forging to any other form that may be required. It may then be flattened into leaf, drawn into wire,...ductile metals are capable. The perfection of the above method of giving complete malleability to platina, is proved by comparing the specific gravity... | |
 | Royal Society (Great Britain) - 1833 - 486 oldal
...metal, be reduced by the processes of heating and forging to any other form that may be required. It may then be flattened into leaf, drawn into wire,...ductile metals are capable. The perfection of the above method of giving complete malleability to platina, is proved by comparing the specific gravity... | |
 | Francis Lieber, Edward Wigglesworth - 1835 - 618 oldal
...It is then to be exposed upon a platina tray, under an inverted pot, to the heat of a windfurnace. The ingot may then be flattened into leaf, drawn into...of which the most ductile metals are capable. The mean spocific gravity of the metallic cake of platina powder, when taken from the press, is 10 ; that... | |
 | 1846 - 602 oldal
...completely to agglutinate its particles, and convert it into a solid ingot. This ingot or bar could then be flattened into leaf, drawn into wire, or submitted to any of the processes by which the most ductile metals are wrought. We have passed over unnoticed many practical minutira... | |
 | 1846 - 610 oldal
...completely to agglutíñate its pnrticles, and convert it into a solid ingot. This ingot or bar could then be flattened into leaf, drawn into wire, or submitted to any of the processes by which the most ductile metals are wrought. We have passed over unnoticed many practical minutiae;'... | |
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... the fire, by smearing over its surface with a moistened mixture of equal parts by measure of crystallized borax and common salt of tartar, which, when in fusion, is a ready solvent of such impurities*, and then exposing it, upon a platina tray, under... 
