Lectures on Experimental Philosophy, Astronomy, and Chemistry: Intended Chiefly for the Use of Students and Young Persons, Volumen2Longman, 1820 |
Otras ediciones - Ver todas
Lectures on Experimental Philosophy, Astronomy, and Chemistry ..., Volumen1 G. (George) Gregory Sin vista previa disponible - 2012 |
Lectures on Experimental Philosophy, Astronomy, and Chemistry: Intended ... Sin vista previa disponible - 2019 |
Términos y frases comunes
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
Pasajes populares
Página 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.
Página 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.
Página 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.
Página 86 - It is of course incombustible, because; its base being already saturated with oxygen, cannot combine with any more.
Página 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.
Página 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.
Página 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...