Philosophical MagazineTaylor & Francis., 1874 - Matter |
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Page 16
... of fluid crosses the transverse plane which is tangential to its surface in the first and last positions , equal to the quantity which would just fill the space occupied by the atoms . Hence , if we 16 Prof. Challis's Theory of the.
... of fluid crosses the transverse plane which is tangential to its surface in the first and last positions , equal to the quantity which would just fill the space occupied by the atoms . Hence , if we 16 Prof. Challis's Theory of the.
Page 17
... plane through the centre transverse to the direction of the earth's motion will be crossed by the refluent streams at right angles . The disturbances of a magnet's declination by these currents would have two maxima and two minima in ...
... plane through the centre transverse to the direction of the earth's motion will be crossed by the refluent streams at right angles . The disturbances of a magnet's declination by these currents would have two maxima and two minima in ...
Page 18
... plane , and thus to cause the external æther to rush in at the polar parts to supply any partial vacancy which the cen- trifugal force might produce . If , however , the circumstances of the earth were in all respects symmetrical with ...
... plane , and thus to cause the external æther to rush in at the polar parts to supply any partial vacancy which the cen- trifugal force might produce . If , however , the circumstances of the earth were in all respects symmetrical with ...
Page 60
... plane . He comes with a notion that an angle is some- thing between two straight lines that meet at a point , and he is taught without delay that he has only to draw a line an inch long and put a dot upon it to produce an infinite ...
... plane . He comes with a notion that an angle is some- thing between two straight lines that meet at a point , and he is taught without delay that he has only to draw a line an inch long and put a dot upon it to produce an infinite ...
Page 78
... plane of polariza- tion , which a Nicol completely extinguishes . On looking in a di- rection normal to the plane of polarization , there is no illumina- tion ; there remains not the least trace of fluorescence . When the solar ray ...
... plane of polariza- tion , which a Nicol completely extinguishes . On looking in a di- rection normal to the plane of polarization , there is no illumina- tion ; there remains not the least trace of fluorescence . When the solar ray ...
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Common terms and phrases
acid æther alloy amount angle of incidence Atlantic axis Biotite Carpenter chemical colour column condensation conductor copper corresponding corundum Croll crystals determined difference direction disk distance effect electricity electrodes electromotive force equal equator equatorial experiments fact galvanometer gas-effect glass grating gravity Gulf-stream heat hemisphere hexagonal hydrogen inches increase inductor intertropical iron laminæ light lines liquid macling magnetic mean measure mercury metals mica miles millims mineral molecules moment of inertia motion needle observations obtained ocean-currents oceanic circulation Oolite optical angle oxide oxygen palladium paper parallel particles phenomena Phil phlogopite plane plates platinum polar portion position pressure prism produced quantity ratio rays reflected regions resistance rotation selenium Siemens's silver solar sound specific gravity spectra spectrum stream supposed surface temperature theory thickness tion transparent tube vermiculite vibration vis viva water of crystallization winds wire
Popular passages
Page 46 - SATURDAY REVIEW. Wilson (JM) — ELEMENTARY GEOMETRY. Books I. II. III. Containing the Subjects of Euclid's first Four Books. New Edition, following the Syllabus of the Geometrical Association. By JM WILSON, MA, late Fellow of St. John's College, Cambridge, and Mathematical Master of Rugby School.
Page 394 - For nearly two years I have felt quite sure that the proper explanation of voltaic action in the common voltaic arrangement is very near Volta's, which fell into discredit because Volta or his followers neglected the principle of conservation of force.
Page 363 - ... WILLIAM STIRLING MAXWELL, KT, Bart., MP 8vo. is. MORTON — THE TREATMENT OF SPINA BIFIDA BY A NEW METHOD. By JAMES MORTON, MD, Professor of Materia Medica, Anderson's College, and Surgeon and Clinical Lecturer of Surgery in the Glasgow Royal Infirmary.
Page 381 - The paper concludes as follows : — " An interesting physical speculation connected with this working hypothesis is the effect on the period of duration of a star's heat which •would be brought about by assuming that the original atoms of which a star is composed are possessed of the increased potential energy of combination which this hypothesis endows them with. From the earliest phase of a star's life the dissipation of energy would, as it were, bring into play a new supply of heat, and so...
Page 250 - ... was found to depend on the order of the spiral arrangement. If in building up the pile the marked side of each successive lamina is turned through an angle of 60°...
Page 364 - Rutherford's researches, very small. As the electric arc in its usual vertical position gave all the lines from pole to pole, the lamp was placed on its side, and the arc used in a horizontal position, the slit being vertical. The dense core of the arc then gave all the short lines in the centre of the field, the longer ones extending beyond them on either side. In order to obtain a scale, it was resolved to photograph the solar spectrum immediately adjacent to the metallic spectrum under examination....
Page 365 - We have here, then, a case of coincident lines, in which the one that is long and bright in one spectrum is short and faint in the other, and a case of a line said to be coincident in two spectra being, though always visible in one, sometimes absent in the other of them, and only appearing in it when the two substances were mixed. The hypothesis of impurity at once explains the whole case, even without the third line, which renders the fact of mixture certain. The longest lines of calcium occur in...
Page 363 - I am of opinion that the syren, performing from 2000 to 2400 revolutions a second, or, in other words, generating from 400 to 480 waves per second, best meets the atmospheric conditions. "We varied the pressure from 40 to 80 Ibs. on the square inch ; and though the intensity did not appear to rise in proportion to the pressure, the higher pressure yielded the hardest and most penetrating sound. The 20th was a rainy day with strong wind. Up to a distance of 5£ miles the syren continued to be heard...
Page 41 - ... untwisted when a current traverses the helix and magnetizes the wire. M. Matteucci has shown that twisting a magnet lessens its force, but stretching a magnet slightly adds to its power} ; and according to M. Guillemin, a strip of iron bent by its own weight is partly straightened by magnetization.
Page 370 - Canada balsam in a wide-mouthed square bottle ; let light, polarized in a vertical plane, be transmitted through the fluid ; observe the light through a Nicol's prism, and turn the prism so as to cut off the light ; insert a spatula in the Canada balsam, in a vertical plane passing through the eye. Whenever the spatula is moved up or down in the fluid, the light reappears on both sides of the spatula ; this continues only so long as the spatula is in motion. As soon as the motion stops, the light...