Annual of Scientific Discovery: Or, Year-book of Facts in Science and Art for ...1864 |
Iz vsebine knjige
Zadetki 1–5 od 36
Stran 33
... vapor of sulphur , rubbed with a horse - hair glove , submitted to a new torsion , sulphured again , further rubbed , and dried . The dried strings , rolled upon a cylinder and tied , are rubbed with fine olive oil , to which one per ...
... vapor of sulphur , rubbed with a horse - hair glove , submitted to a new torsion , sulphured again , further rubbed , and dried . The dried strings , rolled upon a cylinder and tied , are rubbed with fine olive oil , to which one per ...
Stran 35
... vapor , it will obviously be propor- tioned to the quantity of substance so converted into vapor . A hun- dred pounds of water will absorb twice as much heat in passing off in the form of steam , as fifty pounds will ; and a safe that ...
... vapor , it will obviously be propor- tioned to the quantity of substance so converted into vapor . A hun- dred pounds of water will absorb twice as much heat in passing off in the form of steam , as fifty pounds will ; and a safe that ...
Stran 36
... vapor , and escapes through the joints of the iron shell . In the alum safe , invented by Messrs . Tann , of England , and a modification of which is produced in this country , the vapor is derived from the water of crystallization of ...
... vapor , and escapes through the joints of the iron shell . In the alum safe , invented by Messrs . Tann , of England , and a modification of which is produced in this country , the vapor is derived from the water of crystallization of ...
Stran 38
... vapor at a temperature above 212 ° only , was tested in the use of a mixture of sulphate of ammonia and common salt , diluted with powdered coke , which , on the application of heat , yielded sal ammoniac . Experiments were also made ...
... vapor at a temperature above 212 ° only , was tested in the use of a mixture of sulphate of ammonia and common salt , diluted with powdered coke , which , on the application of heat , yielded sal ammoniac . Experiments were also made ...
Stran 41
... vapor , the more elevated must be the temperature at which it will leave , while the capacity of the escaping vapor to render heat latent or to absorb and carry it away will remain unchanged . The same quantity of water in combi- nation ...
... vapor , the more elevated must be the temperature at which it will leave , while the capacity of the escaping vapor to render heat latent or to absorb and carry it away will remain unchanged . The same quantity of water in combi- nation ...
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Pogosti izrazi in povedi
action ammonia animals appear aqueous vapor astronomers atmosphere atoms Aye-Aye body British Association carbonic acid Carboniferous cause cent chemical color containing depth Devonian diameter discovery distance earth effect electric equal existence experiments exposed fact feet fire French gases give glass graphite gun-cotton gunpowder gypsum heat hundred hydrochloric acid hydrogen inches insects iron length less light liquid London magnesium manufacture mass matter metal miles minute moon mountains nature nearly nitrogen observed obtained organic oxygen paper passed phenomena photographic plants plate portion pounds present pressure produced Prof putrefaction quantity rays recent remarkable result rifled rock rubidium safe salt shot side silica soda solar solar parallax solid species spectrum stars steam substance sulphur sulphuric acid sun's surface temperature thallium thickness tion transmutation of species tube velocity vessel weight whole
Priljubljeni odlomki
Stran 170 - It is conceivable that the various kinds of matter, now recognized as different elementary substances, may possess one and the same ultimate or atomic molecule existing in different conditions of movement. The essential unity of matter is an hypothesis in harmony with the equal action of gravity upon all bodies. We know the anxiety with which this point was investigated by Newton, and the care he took to ascertain that every kind of substance, ' metals, stones, woods, grain, salts, animal substances,'...
Stran 256 - As with an invisible trowel, the mass is divided and subdivided into smaller and smaller portions, until it is reduced to an aggregation of granules not too large to build withal the finest fabrics of the nascent organism. And, then, it is as if a delicate finger traced out the line to be occupied by the spinal column, and moulded the contour of the body...
Stran 306 - Thus, by means of repeated selection alone, the length of the ears has been doubled, their contents nearly trebled, and the " tillering" power of the seed increased five-fold.
Stran 288 - The Negro exhibits permanently the imperfect brain, projecting lower jaw, and slender bent limbs of a Caucasian child some considerable time before the period of its birth. The aboriginal American represents the same child nearer birth. The Mongolian is an arrested infant newly born. And so forth.
Stran 77 - The natural philosopher of to-day may dwell amid conceptions which beggar those of Milton. So great and grand are they, that, in the contemplation of them, a certain force of character is requisite to preserve us from bewilderment.