Annual of Scientific Discovery: Or, Year-book of Facts in Science and ArtGould and Lincoln., 1859 |
도서 본문에서
59개의 결과 중 1 - 5개
52 페이지
... minute ; and as the whole is immersed in a constant stream of cold water , there is no possible chance of heated bearings . The water surrounding it on all sides becomes a constant lubricator . The power of manœuvring the propeller from ...
... minute ; and as the whole is immersed in a constant stream of cold water , there is no possible chance of heated bearings . The water surrounding it on all sides becomes a constant lubricator . The power of manœuvring the propeller from ...
60 페이지
... minutes , and the work of supplying all the trains with gas is , we are told , easily performed , from beginning to end , by one man.- Scientific American . TUNNEL UNDER THE ALPS . It is generally known that the immense work of boring a ...
... minutes , and the work of supplying all the trains with gas is , we are told , easily performed , from beginning to end , by one man.- Scientific American . TUNNEL UNDER THE ALPS . It is generally known that the immense work of boring a ...
67 페이지
... minute chisel revolv- ing upon a cylinder at high speed , ― the machine automatically moving the piece in a circle ... minute - the eccentrically - shaped teeth are cut , and the wheels come out the most exquisitely - delicate little ...
... minute chisel revolv- ing upon a cylinder at high speed , ― the machine automatically moving the piece in a circle ... minute - the eccentrically - shaped teeth are cut , and the wheels come out the most exquisitely - delicate little ...
68 페이지
... minute and second points , and the diminutive letters forming the name of the manufacturing firm , are all put on with a fine hair pencil , the artist's eye being assisted by the glass . The hands of the watch are stamped out from thin ...
... minute and second points , and the diminutive letters forming the name of the manufacturing firm , are all put on with a fine hair pencil , the artist's eye being assisted by the glass . The hands of the watch are stamped out from thin ...
83 페이지
... minute to have any appreciable weight in the analyt- ical balance . Now it sometimes happens that these traces are of as much importance , considered scientifically and commercially , as the ingredients present in appreciable quantities ...
... minute to have any appreciable weight in the analyt- ical balance . Now it sometimes happens that these traces are of as much importance , considered scientifically and commercially , as the ingredients present in appreciable quantities ...
기타 출판본 - 모두 보기
자주 나오는 단어 및 구문
action alcohol ammonia amylic alcohol animals antimony apparatus appear application Ashley river atmosphere bodies boiler buds carbonic acid caustic cement cent centre chemical coal color combination combustion compounds containing crystals cyanogen cylinder diameter distance effect electricity engine ether existence experiments fact feet flame formation fossils fusel oil give glass glycerine gutta-percha heat hydrogen inches instrument iron less light lime liquid magnetic mass matter metal miles minute motion murexide nature nitric acid nitrogen observed obtained ordinary organic oxide oxygen paper peculiar phosphorus photographic plants plate portion potash pounds present pressure produced Prof pure quantity rays recent remains remarkable rocks rotation salt side silicate solution Sorghum species specimens steam steel stereoscopic strychnine substance sugar sulphuric sulphuric acid surface telescope temperature tion tube vapor vessel vibrations weight whole wire yellow zinc
인기 인용구
200 페이지 - ... that the principle affords us such family groups as oxygen, fluorine, chlorine, bromine, and iodine, self-arranged in that very order ; or again, nitrogen, phosphorus, arsenic, antimony, and bismuth ; when we find that it packs together in one group all the more active and soluble electro-positive elements, hydrogen, lithium, sodium, and potassium, and in another the more inert and less soluble ones — calcium, strontium, barium, and lead — and that without outraging any other system of relations,...
160 페이지 - ... fixed as to throw the light from right ahead to two points abaft the beam on the port side, and of such a character as to be visible at a distance of at least two miles.
130 페이지 - For this reason these lines merit a much more critical examination than has yet been given to them, for by their aid we may be able to ascertain points of great interest in other departments of science. Thus if we are ever able to acquire certain knowledge respecting the physical state of the sun and other stars, it will be by an examination of the light they emit.
200 페이지 - I am a little slow to give full credence to numerical generalizations of this sort, because we are apt to find their authors either taking some liberties with the numbers themselves, or demanding a wider margin of error in the application of their principles than the precision of the experimental data renders it possible to accord, so that the result is more or less wanting in that close appliance to nature which makes all the difference between a loose analogy and a physical law ; but in this instance...
269 페이지 - I was, during which there was a loud rushing noise in my ears, like steam passing out of a tea-kettle, and a feeling of constriction around the lower part of my neck as if my coat were buttoned too tightly ; my forehead was wet with perspiration, and I yawned frequently. My...
194 페이지 - I think that the preceding results are all explicable on the one admission, that Person's view of the gradual liquefaction of ice is correct (Comptes Rendus, 1850, vol.
130 페이지 - ... in them, show no fixed lines, their prismatic spectrum being uninterrupted from end to end, it would appear to follow that the luminous condition of our sun, whose light contains fixed lines, cannot be referred to such incandescence or ignition. At various times those who have studied this subject...
286 페이지 - ... that which was obtained during the same series of years in wheat alone, whether it was grown consecutively, or in alternation with fallow. Interesting questions arose, therefore, as to the varying sources, or powers of accumulation, of nitrogen in the case of crops so characteristically differing from one another as those above referred to. It had been found that the leguminous crops, which yielded in their produce such a comparatively large amount of nitrogen over a given area of land, were...
107 페이지 - ... distinctly proved. I next imagined, as others have done, that they might have originated from the water, and consequently made a close examination of numbers of vessels filled with the same fluid : in none of these could I perceive a trace of an insect, nor could I see any in any other part of the room.
100 페이지 - ... and the fixed pallets are always touching, and thus allow of no detachment or loose shake ; the holes of the axes are jewelled ; the moving parts are most carefully balanced, a consequence of which is that agitation of the whole does not disturb the parts, and the telegraph works just as well when it is twisted about in the hands, or placed on board a ship or in a railway carriage, as when fixed immovably.