Van Nostrand's Engineering Magazine, Volume 27D. Van Nostrand, 1882 |
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ammonia amount anemometers bars boiler bridge candle candle power carbon carbonic acid carried cause cent compression conductor construction copper cost cubic cubic foot cylinder diagram diameter direction discharge distance drain earth easement effect efficiency electric light electromotive force energy equal experiments factor of safety feet flushing foot force formula gas engine gases girder given heat ignition increase iron lamps length less load machine matter maximum means measured ment meters method miles mixture obtained ohms piers pile piston plate practice present pressure principal curve quantity railway resistance river sand scale scale space screw sewage sewer sewer gas side soil pipe square inch standard candle steam steam engine steel stresses subscale supply surface tained temperature tion tons train trap truss velocity vernier vertical waste pipes water closet weight wind wire
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Halaman 187 - May one thousand eight hundred and twenty-five, the Straight Line or Distance between the Centres of the Two Points in the Gold Studs in the Straight Brass Rod, now in the Custody of the Clerk of the House of Commons, whereon the Words and Figures
Halaman 497 - The national institutions should place all things that they are concerned with before the mind of the citizen in the light in which it is for his good that he should regard them...
Halaman 184 - Full sized pieces of flat, round or square iron, not over 4$ inches in sectional area, shall have an ultimate strength of 50,000 pounds per square inch, and stretch 12^ per cent.
Halaman 244 - ... on the grounds that they must receive and must spread the germs of infectious disease. Dr. Carpenter stated the result of his experience, to which he would direct particular attention : it was as follows: " The non-infectious character of the excretions of those suffering from epidemic and infectious diseases when distributed upon a sewage farm...
Halaman 367 - Engineers, vol. 69, p. 243. 0.01 sec., by so arranging the plan of ignition that a small volume of gaseous mixture is first ignited, expanding and projecting a flame through a passage into the mass of inflammable mixture, and thus adding to the rate of ignition the mechanical disturbance produced by the entering flame. He has succeeded by this means in producing maximum pressure in 0.01 sec.
Halaman 187 - Yard, when compared with a Pendulum vibrating Seconds of Mean Time in the Latitude of London in a Vacuum at the Level of the Sea...
Halaman 358 - ... done with but a small movement of the piston. In type 1 when the piston has reached the end of its stroke, the increase from the moment of ignition is only from one volume to two volumes, while in type 3 with the same total volume swept by the piston, it increases from one volume to five volumes. In the one case the ratio of expansion is two, while in the other it is five. This will be readily seen in Figs. 2 and 4. Now this increased expansion is not obtained at the cost of loss of average pressure...
Halaman 15 - It has been fully established by experiment that it is possible to design and construct a balloon which shall possess the conditions necessary for aerial navigation, ie, which shall have a form of small resistance, shall be stable and easy to manage, and, if driven through the air, shall be capable of steering by a proper obedience to the rodder.
Halaman 357 - ... 45 units would be converted into work. The great advantage of compression over no compression is clearly seen, by the simple operation of compressing before heating ; the last type of engine gives for the same expenditure of heat 2 ' 1 times as much work as the first.
Halaman 367 - ... of a second. It does not matter whether the mixture used is rich or weak in gas ; the rich mixture can be fired slowly and the weak one rapidly, just as may be required. The rate of ignition of the strongest possible mixture is so slow that the time of attaining complete inflammation depends on the amount of mechanical disturbance permitted.