Journal of the Franklin Institute, Հատոր 184Pergamon Press, 1917 Vols. 1-69 include more or less complete patent reports of the U. S. Patent Office for years 1825-1859. cf. Index to v. 1-120 of the Journal, p. [415] |
Բովանդակություն
| 675 | |
| 682 | |
| 688 | |
| 689 | |
| 723 | |
| 735 | |
| 742 | |
| 745 | |
| 509 | |
| 527 | |
| 553 | |
| 578 | |
| 598 | |
| 605 | |
| 613 | |
| 617 | |
| 637 | |
| 651 | |
| 775 | |
| 805 | |
| 837 | |
| 849 | |
| 885 | |
| 901 | |
| 917 | |
| 923 | |
Այլ խմբագրություններ - View all
Common terms and phrases
absorption acetate acetic acid action altitude amount ampère turns approximately armature atmosphere average boat brake horsepower carbon cellulose cellulose acetate cellulose nitrate cent centimetres Chem chemical chlorine color Company conductors constant convection crystals curve decrease density diameter earth effect electric electrons elevation emulsion energy engine equation experiments exposure factor feet flux Franklin Institute Frisco Bridge gases given glass gradient heat Hence horsepower hydrogen ilmenite inch increase ions iron kilometres latitude layer light lower machine magnetite manufacture maximum metal method metres miles mobilities molecules negative observed obtained oxide oxygen piers plate pole present pressure radiation reaction region Report revolutions per minute rutile shown in Fig silicic silicic acid solution spectral speed steel submarine surface temperature tests theory tion titanium toluene torpedo trinitrotoluene tube United velocity voltage water vapor wave-length weight wind
Սիրված հատվածներ
Էջ 806 - He noticed objects above the earth tend to rotate relative to the earth's rotation ... to the right in the northern hemisphere, to the left in the southern. The Coriolis Effect is in force in outer space, too.
Էջ 585 - Presidents of the American Society of Civil Engineers, the American Institute of Mining Engineers, the American Society of Mechanical Engineers, the American Society of...
Էջ 341 - XX (1906), 199. through space, as Thomson had assumed it to do, but that a given source could emit and absorb radiant energy only in units which are all exactly equal to hv, v being the natural frequency of the emitter and ha constant which is the same for all emitters. I shall not attempt to present the basis for such an assumption, for, as a matter of fact, it had almost none at the time.
Էջ 475 - ... granitic rocks. Traces of tin have been detected in feldspar. Stannite, or tin pyrites, is a sulphide of tin, copper, and iron, and a few other rare minerals contain this element. Titanium. — This element is almost invariably present in igneous rocks and in the sedimentary material derived from them. Out of 800 igneous rocks analyzed in the laboratory of the United States Geological Survey, 784 contained titanium.
Էջ 2 - Into that he has put as much of his human patience, common sense, forethought, experimental philosophy, self-control, habits of order and obedience, thoroughly wrought handwork, defiance of brute elements, careless courage, careful patriotism, and calm expectation of the judgment of God, as can well be put into a space of 300 feet long by 80 broad. And I am thankful to have lived in an age when I could see this thing so done.
Էջ 451 - BARRY, John Wolfe. Railway appliances; a description of details of railway construction subsequent to the completion of the earthworks and structures; including a short notice of railway rolling stock.