Van Nostrand's Engineering Magazine, Volume 20D. Van Nostrand, 1879 |
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Common terms and phrases
abutment adiabatic ammonia angle applied arch ring axis Bresse bridge burner carbon center of gravity center of pressure coal compression construction crown cubic curve cylinder depth diameter direction distance ductile Eads effect efficiency elastic limit electric light engine equal equation experiments expression extrados feet flow fluid force formula generatrix give given heat increase iron jetties joint length limit line of pressures load machine material matter ment metal meters method metric system middle third miles motion obtained pass plane practical prismoidal produced quantity railway resistance river sewage sewers side space spandrel specimens square inch steam steel strength strength of materials stress supposed surface temperature tensile tion tons trapezoids Turbine velocity vertical voussoirs weight wheel wrought iron
Popular passages
Page 472 - See the blind beggar dance, the cripple sing, The sot a hero, lunatic a king ; The starving chemist in his golden views Supremely blest, the poet in his muse.
Page 95 - Professor Goodeve has given us a treatise on the steam engine, which will bear comparison with anything written by Huxley or Maxwell, and we can award it no higher praise.
Page 24 - No one can claim protection for the exclusive use of a trade-mark or tradename which would practically give him a monopoly in the sale of any goods other than those produced or made by himself. If he could, the public would be injured rather than protected, for competition would be destroyed. Nor can a generic name, or a name merely descriptive of an article of trade, of its qualities, ingredients, or characteristics, be employed as a trade-mark, and the exclusive use of it be entitled to legal protection.
Page 237 - Fahr., requires for its evolution the expenditure of a mechanical force represented by the fall of 772 Ibs. through the space of one foot.
Page 320 - the man who causes two blades of grass to grow where only one grew before...
Page 198 - President ; which said board shall make a survey of the mouth of the Mississippi River, with a view to determine the best method of obtaining and maintaining a depth of water sufficient for the purposes of commerce, either by a canal from said river to the waters of the Gulf, or by deepening one or more of the natural outlets of said river...
Page 238 - It is impossible for a self-acting machine, unaided by any external agency, to convey heat from one body to another at a higher temperature ; or heat cannot of itself (that is, without compensation) pass from a colder to a warmer body.
Page 305 - The extra velocity with which the molecules rebound from the excited negative pole keep back the more slowly moving molecules which are advancing towards that pole. The conflict occurs at the boundary of the dark space, where the luminous margin bears witness to the energy of the discharge.
Page 272 - Examples of Steam and Gas Engines of the most recent Approved Types as employed in Mines, Factories, Steam Navigation, Railways and Agriculture, practically described. By JOHN BOURNE, CE With 54 Plates and 356 Woodcuts. 4to. 70^.
Page 142 - ... show that the safety of a structure, subjected to a varying amount of straining action, depends on the range of variation of stress to which the structure is subjected, and on the number of repetitions of the change of load. It has been, hitherto, assumed that it depends only on the maximum intensity of the stress ; but this must now be considered to be erroneous. Every machine, subjected to a constant variation of load, must be designed to resist a practically infinite number of changes of load....