Annual of Scientific Discovery: Or, Year-book of Facts in Science and Art for ...1871 |
Vanuit het boek
Resultaten 1-5 van 45
Pagina x
... exist ; many genera and species , hereto- fore considered extinct , have been found to have living representa- tives ; the influence of warm and cold currents is shown to be very great on the fauna of a given area , so that side by side ...
... exist ; many genera and species , hereto- fore considered extinct , have been found to have living representa- tives ; the influence of warm and cold currents is shown to be very great on the fauna of a given area , so that side by side ...
Pagina xiii
... exist if the specific gravity of the outer layer is less than that of the gas below it . Since the density of a globe of gas , whose particles are subject to Newton's and Mariotte's laws , increases towards its centre , the specific ...
... exist if the specific gravity of the outer layer is less than that of the gas below it . Since the density of a globe of gas , whose particles are subject to Newton's and Mariotte's laws , increases towards its centre , the specific ...
Pagina xiv
... exist only in a glowing state in the interior of the sun . Professor Zöllner shows that the quantity of oxygen and nitro- gen , if these gases exist in the sun's atmosphere , must be ex- tremely small compared with that of hydrogen in ...
... exist only in a glowing state in the interior of the sun . Professor Zöllner shows that the quantity of oxygen and nitro- gen , if these gases exist in the sun's atmosphere , must be ex- tremely small compared with that of hydrogen in ...
Pagina 32
... exist -are not fair examples of steam machin- ery , and that the credit to be derived from beating them in econ- omy is but very small . Given an engine consuming say 8 pounds or 10 pounds of coal per indicated horse - power per hour ...
... exist -are not fair examples of steam machin- ery , and that the credit to be derived from beating them in econ- omy is but very small . Given an engine consuming say 8 pounds or 10 pounds of coal per indicated horse - power per hour ...
Pagina 33
... exist- ence which will enable us even approximately to predicate with certainty what the loss of effect by friction in any given engine may be . In certain cases , calculations made with this object will correspond , with surprising ...
... exist- ence which will enable us even approximately to predicate with certainty what the loss of effect by friction in any given engine may be . In certain cases , calculations made with this object will correspond , with surprising ...
Overige edities - Alles bekijken
Annual of Scientific Discovery: Or, Year-book of Facts in Science and Art ... Volledige weergave - 1859 |
Annual of Scientific Discovery: Or, Year-book of Facts in Science and Art ... Volledige weergave - 1852 |
Annual of Scientific Discovery: Or, Year-book of Facts in Science and Art ... Volledige weergave - 1858 |
Veelvoorkomende woorden en zinsdelen
action alcohol alizarine American ammonia amount animals anthracene apparatus appears atmosphere beds Bessemer process body boiler British Association cable caisson carbonic acid cent centimetre centre Chassepot chemical chlorhydric acid chloride cloth Coccoliths color containing copper cylinder deposits depth diameter disease effect electric employed engine exist experiments fact feet fluid formation fossils furnace gases geological glacier gneiss heat hydrogen inches iron Lake light lime limestone liquid magnesium manganese manufacture mass material matter means metal method miles mixture nature Neocomian observations obtained ordinary organic oxide oxygen paper pass Pébrine phosphate phosphorus pipes placed plate portion potassium pounds present pressure produced Professor quantity river rocks salt Science side silicic silicic acid silicon sodium solution species specimens steam stone substance sulphuric acid surface temperature theory thickness tion tons tube vapor vessel weight White Nile whole wire zinc
Populaire passages
Pagina 256 - ... simplicity, endowed, like existing Fungi, with the power of determining the formation of new protoplasm from such matters as ammonium carbonates, oxalates and tartrates, alkaline and earthy phosphates, and water, without the aid of light. That is the expectation to which analogical reasoning leads me ; but I beg you once more to recollect that I have no right to call my opinion anything but an act of philosophical faith.
Pagina 127 - On partially liquefying carbonic acid by pressure alone, and gradually raising at the same time the temperature to 88° Fahr., the surface of demarcation between the liquid and gas became fainter, lost its curvature, and at last disappeared. The space was then occupied by a homogeneous fluid, which exhibited, when the pressure was suddenly diminished or the temperature slightly lowered, a peculiar appearance of moving or flickering striae throughout its entire mass.
Pagina 255 - Belief, in the scientific sense of the word, is a serious matter, and needs strong foundations. To say, therefore, in the admitted absence of evidence, that I have any belief as to the mode in which the existing forms of life have originated, would be using words in. a wrong sense. But expectation is permissible where belief is not ; and if it were given me to look beyond the abyss of geologically recorded time to the still more remote period when the earth was passing through physical and chemical...
Pagina 254 - It is demonstrable that a fluid eminently fit for the development of the lowest forms of life, but which contains neither germs, nor any protein compound, gives rise to living things in great abundance if it is exposed to ordinary air; while no such development takes place, if the air with which it is in contact is mechanically freed from the solid particles which ordinarily float in it, and which may be made visible by appropriate means.
Pagina 262 - And thus mankind will have one more admonition that ' the people perish for lack of knowledge;' and that the alleviation of the miseries and the promotion of the welfare of men must be sought, by those who will not lose their pains, in that diligent, patient, loving study of all the multitudinous aspects of nature, the results of which constitute exact knowledge or science.
Pagina 175 - USA, read a paper on this subject, of which the following is an abstract : — " Cast iron — the raw material from which the malleable metal is made — may be formulated approximately as follows : — Silicon (Si), 5 to 3 per cent. Phosphorus (P), 05 to 2 per cent. Manganese (Mn) , 0 to 20 per cent. Sulphur (S), 25 to 2 per cent. Carbon (C), 2 to 5 per cent. Iron (Fe), 90 to 9G.5 per cent.