The Elements of Experimental Chemistry, 1. kötetBaldwin, Cradock and Joy, and R. Hunter, 1823 |
Részletek a könyvből
1 - 5 találat összesen 100 találatból.
xxii. oldal
... give an accuracy and precision , hitherto unknown , to the experience of the tillers of the earth . It has been said , by those who contend for pure empiricism in the art of agriculture , that it has remained stationary ...
... give an accuracy and precision , hitherto unknown , to the experience of the tillers of the earth . It has been said , by those who contend for pure empiricism in the art of agriculture , that it has remained stationary ...
xxviii. oldal
... give place to the clearly demonstrated utility of new practices . Such a demonstration is generally furnished by some artist of more enlightened views than his neighbours , who has the spirit to deviate from ordinary rules ; and thus ...
... give place to the clearly demonstrated utility of new practices . Such a demonstration is generally furnished by some artist of more enlightened views than his neighbours , who has the spirit to deviate from ordinary rules ; and thus ...
10. oldal
... give it the thick- ness of cream . This is to be applied by a painter's brush , and allowed to dry . Over this a thin paste is afterwards to be applied , formed of slaked lime and common linseed - oil , well mixed and perfectly plastic ...
... give it the thick- ness of cream . This is to be applied by a painter's brush , and allowed to dry . Over this a thin paste is afterwards to be applied , formed of slaked lime and common linseed - oil , well mixed and perfectly plastic ...
24. oldal
... gives 2.08 , which added to 100 gives 102.08 the answer required . If the temperature had been 70 ° , and we had wished to know the volume which the gas would have occupied at 60 ° , the same number 2.08 must have been subtracted from ...
... gives 2.08 , which added to 100 gives 102.08 the answer required . If the temperature had been 70 ° , and we had wished to know the volume which the gas would have occupied at 60 ° , the same number 2.08 must have been subtracted from ...
38. oldal
... give also distinct results , when acted upon by weak acids ; and even amorphous masses of those metals , which have a tendency to assume a crystalline form , such as bisinuth , antimony , and nickel , when exposed to very dilute nitric ...
... give also distinct results , when acted upon by weak acids ; and even amorphous masses of those metals , which have a tendency to assume a crystalline form , such as bisinuth , antimony , and nickel , when exposed to very dilute nitric ...
Más kiadások - Összes megtekintése
Gyakori szavak és kifejezések
100 cubic inches absorbed acid gas affinity alkali alumina ammonia apparatus atmospheric air atom baryta base Berzelius bodies boiling bottle caloric carbonic acid charcoal chemical chemical affinity Chim chlorine colour combination combustion common air compound condensed consists containing cooling copper crystals Dalton Davy decomposed decomposition diluted dissolved distilled Ditto electricity evaporation experiments Fahr Fahrenheit flame fluid formed galvanic gases Gay Lussac gazometer glass grains heat hydro-cyanic hydrogen hydrogen gas ignited iodine iron lime liquid magnesia mercury metals mixed mixture muriatic acid nitrate nitric acid nitrogen nitrous gas nitrous oxide obtained oxide oxygen gas Phil phosphoric acid phosphorus plate potash potassa potassium precipitate produced properties proportion pure quantity retort salt saturated Sir H soda solid soluble solution specific gravity strontia substance sufficient sulphate sulphureted hydrogen sulphuric acid surface temperature thermometer Thomson tion tube vapour vessel volume weight wire zinc
Népszerű szakaszok
xviii. oldal - Studies serve for delight, for ornament, and for ability. Their chief use for delight, is in privateness and retiring; for ornament, is in discourse; and for ability, is in the judgment and disposition of business...
xviii. oldal - Expert men," says Lord Bacon, " can execute and judge of particulars one by* one ; but the general counsels, and the plots, and the marshalling of affairs, come best from those that are learned.
285. oldal - In the use of this apparatus, the bottle is first filled with the liquid employed, which is best prepared by boiling a mixture of quick lime and sulphur with water, filtering the solution, and agitating it for some time in a bottle half filled with common air. The tube, filled with the gas under examination, or with common air, if that be the subject of the experiment, is next put into its place, and, on inverting the instrument, the gas ascends into the bottle, where it is brought extensively into...
484. oldal - By this arrangement some brilliant phenomena were produced. The potash appeared a conductor in a high degree, and as long as the communication was preserved, a most intense light was exhibited at the negative wire, and a column of flame, which seemed to be owing to the development of combustible matter, arose from the point of contact.
499. oldal - ... remains free. The fluid amalgam of mercury and this substance dissolves all the metals I have exposed to it ; and in this state of union, mercury acts on iron and platina. When the basis of potash is heated with gold, or silver, or copper, in a close vessel of pure glass, it rapidly acts upon them ; and when the compounds are thrown into water, this fluid is decomposed, potash formed, and the metals appear to be separated unaltered. The basis of potash combines with fusible metal, and forms an...
519. oldal - It combines with oxygen, slowly and without luminous appearance, at all common temperatures. When heated to its fusing point, the combination becomes more rapid ; but no light is emitted till it becomes nearly red hot. The flame which it then produces, is white, and it sends forth bright sparks, exhibiting a very beautiful effect.
491. oldal - So strong is the attraction of the basis of potash for oxygen, and so great the energy of its action upon water, that it discovers and decomposes the small quantities of water contained in alcohol and ether, even when they are carefully purified.
xviii. oldal - When theoretical knowledge and practical skill are happily combined in the same person, the intellectual power of man appears in its full perfection; and fits him equally to conduct, with a masterly hand, the details of ordinary business, and to contend successfully with the untried difficulties of new and hazardous situations. In conducting the former, mere experience may frequently be a sufficient guide; but experience and speculation must be combined together to prepare us for the latter.
502. oldal - ... pour in. by means of a glass tube, reaching to the bottom, three or four parts of sulphuric acid. The phosphorus takes fire, and burns vividly under the water. This experiment too requires caution lest the inflamed phosphorus should be thrown into the eyes.
199. oldal - ... of card AB, the circular discs of card, marked respectively with the letters N and S, and with arrows parallel to, but pointing in a contrary direction to the one at c. The same marks must be put on the reverse of each of the three pieces of card, so that when held in different situations they may be seen without turning the instrument...