Annual of Scientific Discovery: Or, Year-book of Facts in Science and ArtGould and Lincoln, 1863 |
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Seite 200
... alumina he obtained , in the course of a few hours , a hydrate of alumina , like diopside , hard enough to scratch quartz . In like manner he has hopes of ultimately producing topazes and sap- phires . A recent English writer , Mr ...
... alumina he obtained , in the course of a few hours , a hydrate of alumina , like diopside , hard enough to scratch quartz . In like manner he has hopes of ultimately producing topazes and sap- phires . A recent English writer , Mr ...
Seite 201
... alumina and of potash ) and chromate of potash which he placed in a cavity of animal char- coal . In this manner he obtained small portions of melted alumina , having the color and hardness of the ruby , but which could be easily ...
... alumina and of potash ) and chromate of potash which he placed in a cavity of animal char- coal . In this manner he obtained small portions of melted alumina , having the color and hardness of the ruby , but which could be easily ...
Seite 202
... alumina . The continued action of heat partly evaporates this sulphuret of potassium , and the alumina separates in the form of little crystals . On opening the crucible , a black mass , sparkling with brilliant points , is found in it ...
... alumina . The continued action of heat partly evaporates this sulphuret of potassium , and the alumina separates in the form of little crystals . On opening the crucible , a black mass , sparkling with brilliant points , is found in it ...
Seite 205
... alumina is an important and even an essential part . All the varieties of cement stone , such as the stones called septaria and other nodules , agree in this . On burning this material the limestone is converted into lime , and the ...
... alumina is an important and even an essential part . All the varieties of cement stone , such as the stones called septaria and other nodules , agree in this . On burning this material the limestone is converted into lime , and the ...
Seite 264
... alumina which confers upon clay its plastic property , but the author showed that pure alumina , whether gelatinous , or after having been dried and ground up 264 ANNUAL OF SCIENTIFIC DISCOVERY .
... alumina which confers upon clay its plastic property , but the author showed that pure alumina , whether gelatinous , or after having been dried and ground up 264 ANNUAL OF SCIENTIFIC DISCOVERY .
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acetic acid action alumina ammonia amount aniline animals apparatus appear applied armor-plates astronomer atmosphere body British carbonic acid cast iron cent charcoal chemical cloth color comet containing copper degrees diameter discovery distance earth effect electric English engraving exhibited existence experiments explosion fact feet fibre force furnace heat hundred hydrochloric acid hydrogen inches increased iron lakes light lines liquid London machine magnetism manufacture mass matter ments metal metres miles minute motion naphtha nature nitric acid nitrogen observed obtained organic oxide oxygen paper passed phenomena phosphorus plants plates pollinia portion pounds present pressure produced Prof projectile quantity recently remarkable resistance rifled salt shell ship Shoeburyness shot side solar solid solution specimens spectrum stars steam steel stone strychnia substance sulphuric acid surface target temperature thallium thick tion tons tube vapor velocity vessel weight wrought iron
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Seite 140 - In this ascension, six pigeons were taken up. One was thrown out at the height of three miles ; it extended its wings and dropped...
Seite 171 - In order to explain,' he says, ' the occurrence of the dark lines in the solar spectrum, we must assume that the solar atmosphere encloses a luminous nucleus, producing a continuous spectrum, the brightness of which exceeds a certain limit. The most probable supposition which can be made respecting the sun's constitution is, that it consists of a solid or liquid nucleus, heated to a temperature of the brightest whiteness, surrounded by an atmosphere of somewhat lower temperature. This supposition...