The London, Edinburgh and Dublin Philosophical Magazine and Journal of ScienceTaylor & Francis, 1923 - Physics |
From inside the book
Results 1-5 of 100
Page 33
... calculated by means of ( 7 ) , A being taken equal to 0.00055 mm . * Classen , Mathematische Optik , p . 201 . + Branshard , Phys . Review , Feb. 1918 . Phil , Mag . S. 6. Vol . 46. No. 271. July 1923 . D The values of the distances put ...
... calculated by means of ( 7 ) , A being taken equal to 0.00055 mm . * Classen , Mathematische Optik , p . 201 . + Branshard , Phys . Review , Feb. 1918 . Phil , Mag . S. 6. Vol . 46. No. 271. July 1923 . D The values of the distances put ...
Page 34
... calculated from ( 6 ) for the series of points varying in distance from the geometrical image of each point - source by tenths from -0.5 to D + 0.5 for the different distances between the point - sources from D = 29 to D = 51 . The ...
... calculated from ( 6 ) for the series of points varying in distance from the geometrical image of each point - source by tenths from -0.5 to D + 0.5 for the different distances between the point - sources from D = 29 to D = 51 . The ...
Page 39
... calculated for the different D from D = 30 to D = 51 , and for the different n from 0.9 to n = 0.01 . These calculations were made as before , and all data are expressed in the illumination at the geometrical image of the brighter point ...
... calculated for the different D from D = 30 to D = 51 , and for the different n from 0.9 to n = 0.01 . These calculations were made as before , and all data are expressed in the illumination at the geometrical image of the brighter point ...
Page 56
... calculating the numerical values of such properties of the eye as depth of focus . Helmholtz , for example , used this ... calculated to subtend 11 seconds of arc at the eye of the observer ( 0.79 μ at retina ) . This confirms Hering's ...
... calculating the numerical values of such properties of the eye as depth of focus . Helmholtz , for example , used this ... calculated to subtend 11 seconds of arc at the eye of the observer ( 0.79 μ at retina ) . This confirms Hering's ...
Page 58
... calculated resolving power of the eye , and the finite diameter of the cone . With regard to the former , Rayleigh gave the following formula for calculating the least width of black line for visibility when viewed against a self ...
... calculated resolving power of the eye , and the finite diameter of the cone . With regard to the former , Rayleigh gave the following formula for calculating the least width of black line for visibility when viewed against a self ...
Contents
1 | |
17 | |
29 | |
49 | |
68 | |
79 | |
90 | |
100 | |
497 | |
514 | |
524 | |
534 | |
543 | |
553 | |
565 | |
573 | |
101 | |
108 | |
114 | |
125 | |
135 | |
146 | |
156 | |
163 | |
170 | |
177 | |
193 | |
211 | |
213 | |
225 | |
244 | |
256 | |
273 | |
291 | |
305 | |
312 | |
321 | |
327 | |
335 | |
364 | |
386 | |
399 | |
406 | |
417 | |
426 | |
434 | |
442 | |
448 | |
454 | |
461 | |
473 | |
481 | |
487 | |
605 | |
607 | |
627 | |
638 | |
657 | |
665 | |
671 | |
686 | |
699 | |
707 | |
741 | |
751 | |
768 | |
785 | |
802 | |
817 | |
828 | |
836 | |
872 | |
905 | |
911 | |
930 | |
956 | |
964 | |
977 | |
992 | |
999 | |
1013 | |
1027 | |
1049 | |
1074 | |
1088 | |
1090 | |
1091 | |
1112 | |
Other editions - View all
Common terms and phrases
absorption actinium alloys angle apparatus approximately argon armature assume atomic number atomic weight auroral axis Balmer series calculated carbon cent centre charge circuit coefficient collision colour constant corresponding cubic curves deflexion density diameter distance edge effect electric electrons elements emission energy equal equation experimental experiments filament formula frequency galvanometer gases given helium Heusler alloys hydrogen illumination increase intensity investigation ionization ionizing potential ions J. J. Thomson light limit lines magnetic field maximum mean measured mercury method molecules motion negative nitrogen observed obtained orbit oscillation paper particles Phil Phys plane plate positive potential pressure produced protactinium quantum radiation ratio rays scattering shown sodium solution spectrum straight edge surface Table temperature theory tube uranium values vapour velocity voltage volts wave-length X-ray zero
Popular passages
Page 1130 - MILLION. Containing the least factor of every number not divisible by 2, 3 or 5 between 3,000,000 and 4,000,000.
Page 440 - Professor Japp in his Presidential Address to the Chemical Section of the British Association...
Page 1020 - ... systematic fashion how they achieved their aims. If the discovery of laws could be reduced to a set of formal rules, anyone who learnt the rules could discover laws. But there is no broad road to progress. Herein lies the most serious objection to much that has been written on the methods of science. There is no method, and it is because there is no method which can be expounded to all the world that science is a delight to those who possess the instincts which make methods unnecessary.
Page 837 - The object of the present paper is to show how it is possible to account theoretically for the main features of the phenomena of X-ray absorption and continuous X-ray emission discussed above.
Page 14 - Again it is obvious that even if it were possible to perceive by the senses that the sum of the angles of a triangle is equal to two right angles, we should still require a proof of this ; we should not (as some d fact remains that the object perceived is only one particular instance of the type.
Page 870 - The experiments described in this paper were carried out in order to provide more systematic evidence on the liquid-like behaviour of the growing film.
Page 492 - The evidence appears quite conclusive that every sample of silver iodide studied contained the cubic form; in a few cases none but the cubic structure was evident; in some, one or two faint lines were present which belonged only to the hexagonal form; while in most of the samples the hexagonal form predominated. No systematic study was made of the conditions governing the production of one crystal form or the other; the first sample showing the cubic form was prepared by precipitation; the other...
Page 46 - H. NAGAOKA. Diffraction Phenomena in the Focal Plane of a Telescope with Circular Aperture, due to a Finite Source of Light.