Journal of the Franklin Institute, Հատոր 188Franklin Institute, 1919 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] |
From inside the book
Արդյունքներ 57–ի 1-ից 5-ը:
Էջ 91
... Signal Corps , U. S. A. ATTENTION was first directed , in 1911 , to the practical utility of employing high frequency electric waves for transmission of energy along wires by Major ( now Major - General ) George O. Squier . The ...
... Signal Corps , U. S. A. ATTENTION was first directed , in 1911 , to the practical utility of employing high frequency electric waves for transmission of energy along wires by Major ( now Major - General ) George O. Squier . The ...
Էջ 92
... Signal Corps Radio Laboratory , Bureau of Standards , Washington , D. C. , and a second at Dixon's Park , Curtis ... signals of a " sharply " tuned radio station . This last fact permits of the operation of a number of multiplex units ...
... Signal Corps Radio Laboratory , Bureau of Standards , Washington , D. C. , and a second at Dixon's Park , Curtis ... signals of a " sharply " tuned radio station . This last fact permits of the operation of a number of multiplex units ...
Էջ 93
... Signal Corps radio - telephone and telegraph apparatus , large quantities of which were purchased during the war and which are now idle , with only slight changes in construction , may be adapted to either radio or multiplex operation ...
... Signal Corps radio - telephone and telegraph apparatus , large quantities of which were purchased during the war and which are now idle , with only slight changes in construction , may be adapted to either radio or multiplex operation ...
Էջ 95
... Signal Corps and Navy work since * Communicated by the Author . Complete paper to appear as a Scientific Paper of the Bureau of Standards . that time . Either the equations as here given or 95 Radio Transmission Formulas for Antenna and ...
... Signal Corps and Navy work since * Communicated by the Author . Complete paper to appear as a Scientific Paper of the Bureau of Standards . that time . Either the equations as here given or 95 Radio Transmission Formulas for Antenna and ...
Էջ 97
... Signal Services of the United States Army in the World War . " CORRESPONDENCE WITH MEDALISTS . OFFICE OF THE SECRETARY THE FRANKLIN INSTITUTE OF THE STATE OF PENNSYLVANIA Philadelphia Major General George Owen Squier , Chief Signal ...
... Signal Services of the United States Army in the World War . " CORRESPONDENCE WITH MEDALISTS . OFFICE OF THE SECRETARY THE FRANKLIN INSTITUTE OF THE STATE OF PENNSYLVANIA Philadelphia Major General George Owen Squier , Chief Signal ...
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Common terms and phrases
airplane angle antenna effect apparatus beams black body brightness Bulletin Bureau capsaicin carbon Catalogue cent centimetre circuit coil color difference condenser constant cooling determined direction displacement current distance effluent electric electrodes electrolytic Engineering equation feet field Franklin Institute galvanometer given gives glass heat Hence horizontal illumination inches increase inductance industry instrument iron laboratory lamp length light lime loop luminous efficiency luminous efficiency curve luminous flux machined Manufacturing Company maximum measured ment metal method molybdenite number of turns observed obtained pendulum Pennsylvania photometric pitch pockets plane plant potentiometer practical produced radiation radius of gyration rays reception factor reflection resistance saturation sewage shield shown in Fig Signal softening treatment solenoid solution spacing standard steel strength surface temperature tion transmission tube United visibility voltage wave wave-length winding wire wood York City
Սիրված հատվածներ
Էջ 489 - 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.
Էջ 788 - Hence the surface was early frozen. Hence the first snows remained on it unmelted, and received continual additions. Hence perhaps the winter of 1783-4, was more severe than any that had happened for many years.
Էջ 805 - ... the dustiness of the earth's atmosphere, but also upon the dustiness, and, of course, the temperature, of the solar atmosphere. Obviously, dust in the sun's envelope must, more or less, shut in solar radiation just as, and in the same manner that, dust in the earth's 1C.
Էջ 464 - SABCE be the path of a ray in this plane, entering the drop at A and emerging at C. The changes in direction at A and C are each i — r, in which i is the angle of incidence and r the angle of refraction, and the change at B, as also at every other place of an internal reflection, when there are more than one, is «• — 2r.
Էջ 788 - ... summer fogs. Because, if found to be so, men might from such fogs conjecture the probability of a succeeding hard winter, and of the damage to be expected by the breaking up of frozen rivers in the spring; and take such measures as are possible and practicable to secure themselves and effects from the mischiefs that attend the...
Էջ 690 - However, it appears that the temperature at which Illinois coal should be handled for the production of the best coke is somewhat lower than the best operating temperatures for Eastern coals, and moreover, the speed of coking of the Illinois coal is somewhat less.
Էջ 366 - The coefficient of reflection or total reflecting power of a surface is defined as the ratio of the total reflected luminous flux to the total incident luminous flux. In most practical work this value is not of great importance, the value desired being that of the reflecting power of the surface measured under certain specified conditions, such as the angle of incidence of the flux and the position from which the surface is viewed. The term '* reflection factor...
Էջ 289 - OF THE FRANKLIN INSTITUTE OF THE STATE OF PENNSYLVANIA. FOR THE PROMOTION OF THE MECHANIC ARTS. VOL.