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acid alcohol Ångström anhydrous aurora axis bands boron bright calculated calorimeter carbonic acid cent centims chloride coefficient coil colour compound condition constant cooled corresponding crater cryohydrate crystals curve determined diameter diamond distance duplex telegraphy effect electromotive force elements equation erbia eruption Etna experiments extra current flame force formula freezing-mixture gaseous give given graphite Green's formula grms hydrocarbon lava length Lielegg light lines liquid magnetic moment means measured ments method metres millim molecules motion needle observed obtained paper particular integral permanent magnetism phenomena Phil Piazzi Smyth placed Plate platinum polarization pole produced Professor protocatechuic acid quantity ratio represents resistance salt saturated solid solidify solution specific gravity specific heat spectra spectroscope spectrum of carbon station substance suppose surface telegraphy temperature theory thickness tints tion tube vanilline vapour water of crystallization weight
Page 29 - “I have uttered that I understood not; things too wonderful for me, which I knew not.” “Wherefore I abhor myself, and repent in
Page 321 - respectively. Then, at the points where 1 and 1', 2 and 2', 3 and 3', 4 and 4' respectively intersect each other, the potentials will be the sums of the potentials of the intersecting lines; and therefore the potential at all these points is the same, namely
Page 203 - in the same direction; and here, again, the spectrum we obtain from elements in a state of vapour (a spectrum characterized by spaces and bands) is similar to that we obtain from vapours of which the compound nature is unquestioned. (/3) At high temperatures, produced by combustion, the vapours of
Page 121 - 0 will be B, A, B', A; but since B and B' are complementary, their suppression will not affect the resulting tint except as to intensity, and the overlap will be effectively deprived of A alone; in other words, it will be of the same tint as the image 0 would be if the combination Q,
Page 155 - In his ‘Essay on the Application of Mathematical Analysis to the Theories of Electricity and Magnetism' (Nottingham, 1828),
Page 243 - that, from the point (about 600°) at which the specific heat of carbon ceases to vary with increase of temperature and becomes comparable with that of other elements, any real difference in the specific heats of the two modifications disappears, and carbon obeys the law of Dulong and Petit.
Page 201 - and Energy,” printed in Phil. Trans. 1873), as conclusively proving that such slags are not denser in the molten than in the solid state, and that the floating referred to is due to other causes. The author returns thanks to several persons for facilities liberally afforded him in making these experiments.
Page 121 - having lost the same tints as B 0, will have lost also the tint A, and will have received besides the addition of two measures of the tint A'. Effect of Combinations of two Colours.—A similar train of reasoning might be applied to the triple overlaps. But the main interest of these parts of the' figure consists in
Page 289 - openings. Thus the resonator's mouth was exposed to the vibrations during an interval which equalled that during which it was screened from them. A rubber tube led from the nipple of the resonator to one ear, while the other ear was tightly closed with a lump of beeswax.
Page 204 - end. (This absorption may ¿ break up into channelled spaces.) Fifth stage ... Unique continuous absorption. 9. I shall content myself in the present note by giving one or two instances of the passage of spectra from one stage to another, beginning at the fifth stage. From 5 to 4.