Lectures on Experimental Philosophy, Astronomy, and Chemistry: Intended Chiefly for the Use of Students and Young Persons, Volume 2R. Phillips, 1808 - Science |
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Page 54
... freezing and expanding itself rais- ed the 74lb . The Florentine academicians filled a brass globe with water , closing the orifice by a well - fitted screw , and immersed it in freezing water ; but as the sides were too thick it did ...
... freezing and expanding itself rais- ed the 74lb . The Florentine academicians filled a brass globe with water , closing the orifice by a well - fitted screw , and immersed it in freezing water ; but as the sides were too thick it did ...
Page 55
... freezing is about an 8th or 9th of its bulk . The burst- ing of leaden pipes placed near or within the earth's surface proceeds from the same cause . The pavement even suffers from the frost , which swells the earth and loosens the ...
... freezing is about an 8th or 9th of its bulk . The burst- ing of leaden pipes placed near or within the earth's surface proceeds from the same cause . The pavement even suffers from the frost , which swells the earth and loosens the ...
Page 59
... freezing point , but this is warm when compared with the intense cold felt in several climates , frequently 32 ° below frost ; the freezing point being as much warmer than this , as our summer weather is hotter than frost . Fluids ...
... freezing point , but this is warm when compared with the intense cold felt in several climates , frequently 32 ° below frost ; the freezing point being as much warmer than this , as our summer weather is hotter than frost . Fluids ...
Page 60
... freeze in the winter : the cold air rushing over the surface , a portion of the water at the top being thus rendered heavier will sink , and its place be supplied with a warmer portion from below , which in its turn must also be cool ...
... freeze in the winter : the cold air rushing over the surface , a portion of the water at the top being thus rendered heavier will sink , and its place be supplied with a warmer portion from below , which in its turn must also be cool ...
Page 63
... freeze others . Before Professor Braun , it was thought that mercury was not to be frozen . The only parts of matter that have shown a repugnancy to become fluid are some earths and stones , but these are few in number , and the number ...
... freeze others . Before Professor Braun , it was thought that mercury was not to be frozen . The only parts of matter that have shown a repugnancy to become fluid are some earths and stones , but these are few in number , and the number ...
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 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 common salt compound condensed contain converted into vapour copper crystals degree of heat deliquescent dissolved distillation earth easily eclipse effect effervescence equator evaporation exposed fire flame fluid fluidity freezing furnace fusion glass Hence hydrogen inflammable iron lecture lime liquor magnesia matter melted mercury metals mineral waters mixed mixture moon mucilage muriatic acid nitrat nitric acid nitrogen node obtained oxide oxygen oxygen gas particles phænomenon phosphorus portion potass powder precipitated produced proportion pure render resins rises sal ammoniac saltpetre saturated sensible heat separated silver small quantity smell soda solid solution sometimes spirit of wine stances stone strata sulphat sulphuric acid surface temperature tion transparent vegetable vessel weight
Popular passages
Page 19 - ... passes by the nodes but twice in a year, it is no wonder that we have so many new and full moons without eclipses.
Page 37 - ... or trough AZ full of water, with a shelf, KKK, in it. B, G, F are glass jars or receivers, inverted with their mouths' downwards. We shall point out its use by the example of Oxygen gas. C is a glass bottle into which are put some red-lead or manganese, and a small quantity of dilute sulphuric acid. D is a glass tube generally* fitted by grinding- to the neck of the bottle, and curved so as to enter conveniently below the shelf and communicating -with one of the jars or receivers B, 6, F.
Page 183 - This salt is dissolved in water, and half its weight of potass added. The Magnesia is immediately precipitated ; because potass has a stronger affinity for the sulphuric acid: it is then to be washed with a sufficient quantity of Wiiti-i-, ami dried.
Page 25 - ... not be difficult to conceive how astronomers are able to foretel the exact time when any phenomenon of this kind will happen. For as an eclipse can only take place at the time of a new or full moon, the chief requisites are to determine the number of mean conjunctions and oppositions that will arrive in every year, and the true places of the sun and moon in their orbits at each of those times. And if from this it appears, that the two luminaries are within the proper limits of the node, there...
Page 4 - The true cause of the variation of the seasons consists in the inclination of the axis of the earth to the plane of its orbit; or, in other words, to the ecliptic.
Page 236 - When a sheet of pure tin is immersed in a solution of nitromuriate 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. Or the...
Page 24 - ... 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...
Page 219 - I shall, till some better method be proposed, distinguish them from each other, by prefixing to the word oxide the first syllable of the Greek ordinal numerals. Thus the protoxide of a metal will denote the...
Page 21 - 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.
Page 82 - ... those of Lavoisier and his friends. The example of these celebrated men was soon followed by all the young chemists of France. Mr. Lavoisier's explanation of combustion depends upon the two laws discovered by himself and Dr. Black. When a combustible body is raised to a certain temperature, it begins to combine with the oxygen of the atmosphere, and this oxygen during its combination lets go the caloric and light with which it was combined while in the gaseous state. Hence their appearance during...