Lectures on Experimental Philosophy, Astronomy, and Chemistry: Intended Chiefly for the Use of Students and Young Persons, Volume 2Longman, 1820 - Astronomy |
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Page 52
... charcoal of wood , and will be treated of at large under the class of com- bustibles . I have at present only briefly to notice its combinations . With oxygen , carbon forms carbonic acid , which is found naturally united with several ...
... charcoal of wood , and will be treated of at large under the class of com- bustibles . I have at present only briefly to notice its combinations . With oxygen , carbon forms carbonic acid , which is found naturally united with several ...
Page 82
... charcoal , and some saline sub- stances . When the volatile parts are evaporated , the remainder has a different arrangement from what it had before . It may seem rash to assert that heat has a power of bringing into fusion and ...
... charcoal , and some saline sub- stances . When the volatile parts are evaporated , the remainder has a different arrangement from what it had before . It may seem rash to assert that heat has a power of bringing into fusion and ...
Page 86
... charcoal applied in a particular manner with the assist- ance of fire , this acid may be again converted into inflammable sulphur . It is the same thing whether we use charcoal made of blood , flesh , or bone , or whether the charcoal ...
... charcoal applied in a particular manner with the assist- ance of fire , this acid may be again converted into inflammable sulphur . It is the same thing whether we use charcoal made of blood , flesh , or bone , or whether the charcoal ...
Page 87
... charcoal when applied again to this acid draws off the oxygen , with which it unites , and forms carbonic acid gas , and leaves the sulphur in its former state . * Formerly called vitriolic acid . LECTURE XXVII . CHEMISTRY . MIXTURE ...
... charcoal when applied again to this acid draws off the oxygen , with which it unites , and forms carbonic acid gas , and leaves the sulphur in its former state . * Formerly called vitriolic acid . LECTURE XXVII . CHEMISTRY . MIXTURE ...
Page 93
... charcoal , we shall not so easily understand the manner in which the effect is produced . It is more easy to in- crease the number of facts than to explain them . After Lord Bacon , chemistry became more known , and attempts were made ...
... charcoal , we shall not so easily understand the manner in which the effect is produced . It is more easy to in- crease the number of facts than to explain them . After Lord Bacon , chemistry became more known , and attempts were made ...
Other editions - View all
Lectures on Experimental Philosophy, Astronomy, and Chemistry ..., Volume 1 G. (George) Gregory No preview available - 2012 |
Lectures on Experimental Philosophy, Astronomy, and Chemistry: Intended ... No preview available - 2019 |
Common terms and phrases
acid gas alkali alum ammonia animal appears applied atmosphere attraction for water becomes bodies boiling burning called caloric carbonat carbonic acid carbonic acid gas charcoal chemical chemistry chemists clay cold colour combined combustible compound condensed contain converted into vapour copper crystals degree of heat deliquescent dissolved distillation earth eclipse effect effervescence equator evaporation exposed fire flame fluid fluidity freezing furnace fusion glass Hence hydrogen hydrogen gas iron lecture lime liquor magnesia matter melted mercury metals mineral waters mixed mixture moon mucilage muriatic acid nitrat nitric acid nitrogen node obtained orbit oxide oxygen oxygen gas particles phænomenon phosphorus portion potass powder precipitated produced proportion pure resins rises saltpetre saturated sensible heat separated silver small quantity smell soda solid solution sometimes specific gravity spirit of wine stances strata strong substances sulphat sulphuric acid surface tains temperature tion transparent vegetable vessel volatile alkali
Popular passages
Page 1 - ... to the inclination of the axis of the earth to the plane of the ecliptic, and partly to the different positions in which a spectator is placed in different zones of the globe.
Page 22 - An eclipse of the sun can only take place when the moon is in conjunction with the sun, and when she is in one of her nodes, or very near it. Suppose the line EE (fig. 8) to be a portion of the ecliptic, and LL a portion of the orbit of the moon, cutting the ecliptic in the point N, at an angle of a little more than five degrees. Then, if in the moment of her conjunction the moon is found in the point F of her orbit, she will be too far from her node to intercept the sun's light, and cause an eclipse.
Page 86 - ... to combine with the oxygen of the atmosphere, and this oxygen during its combination lets go the caloric with which in the state of air or gas it was combined.
Page 86 - It is of course incombustible, because; its base being already saturated with oxygen, cannot combine with any more.
Page 26 - But the falling back of the line of conjunctions, or oppositions of the sun and moon 28' 12", with respect to the line of the nodes in every period, will wear it out in process of time; and after that it will not return again in less than 12,493 years.
Page 246 - When a sheet of pure tin is immersed in a solution of nitro-muriate of gold, the oxide of gold is precipitated of a purple colour; and, when scraped off and collected, forms the purple powder of Cassius, much employed in enamelling.
Page 25 - ... 225 days; in which time there would always be a regular period of eclipses, if any complete number of lunations were finished without a fraction. But this never happens ; for if both the Sun and Moon should start from a line of conjunction with either of the nodes in any point of the ecliptic, the Sun would perform 18 annual revolutions and 222 degrees over and above, and the Moon 230 lunations and 85...