The Philosophical Magazine: Comprehending the Various Branches of Science, the Liberal and Fine Arts, Geology, Agriculture, Manufactures and Commerce, Volume 33

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Richard Taylor and Company, 1809 - Physics
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Page 68 - ... from whatever cause this quality may be derived. The vivacity of the light of the comet also had a much greater resemblance to the radiance of the stars, than to the mild reflection of the sun's beams from the moon, which is an additional support of our former inference.
Page 483 - When brought in contact with water, it acts upon it with much energy, produces heat, and often inflammation, and evolves ammonia. When thrown upon water, it disappears with a hissing noise, and globules from it often move in a state of ignition upon the surface of the water. It rapidly effervesces and deliquesces in air, but can be preserved under naphtha, in which, however, it softens slowly, and seems partially to dissolve. When it is plunged under water filling an inverted jar, by means of a proper...
Page 69 - October, was expanded over a space of more than 9 million of miles,* may be accounted for more satisfactorily, by admitting them to consist of radiant matter, such as, for instance, the aurora borealis, than when we unnecessarily ascribe their light to a reflection of the sun's illumination thrown upon vapours supposed to arise from the body of the comet. By the gradual increase of the distance of our comet...
Page 95 - Mcdica ; by Dr. Curry and Dr. Cholmeley — Midwifery, and Diseases of Women and Children ; by Dr. Haighton. — Physiology, or Laws of the Animal Economy; by Dr.
Page 212 - Having got them properly cleaned, and the fruit ready picked, (which should not be too ripe,) fill such of them as you intend doing at one time, as full as they will hold, so as to admit the cork going in, frequently shaking the fruit down whilst filling. When done, fit the corks to each bottle, and stick them lightly in, so as to be easily taken out when the fruit is sufficiently scalded, which may be done either in a copper, or large kettle, or saucepan over the fire, first putting a coarse cloth...
Page 430 - If four magnitudes are proportional, the sum of the first and second is to their difference as the sum of the third and fourth is to their difference.
Page 107 - The western side of the promontory is cut down perpendicularly, by eleven Whyn Dykes; the intervals between them are unequal, but they all reach from the top of the precipice to the water, out of which some of them again emerge in considerable fragments ; they are all constructed of horizontal prisms, which are strongly contrasted with the vertical pillars of the strata through which they pass. One of the dykes at Port Cooan, on Bengore, half a mile from the Giant's Causeway, is very beautiful ;...
Page 213 - Fahrenheit-s. a teaa tea-kettle full of water must be got ready to boil as soon fts the fruit is sufficiently done. If one fire only is uSed, the kettle containing the bottles must be removed half off the fire, when it is at the full heat required, to make room for boiling the water in the tea-kettle. As soon as the fruit is properly scalded, and the water boiling, take...
Page 69 - ... visible ; but the distance of the comet from the Earth, at the time of observation, was nearly 240 millions of miles*, which proves, I think, that no light reflected from floating particles could possibly have reached the eye, without supposing the number, extent, and density of these particles far greater than what can be admitted.
Page 196 - It is natural that the first great operation we proceed to investigate, should be the formation of our magnificent facades, one of which is the principal subject of this memoir. The line of coast that bounds our basaltic area on its north side, extends about twenty-five Irish miles, in which course the precipices are nearly continuous, and more than one half of them absolutely perpendicular for a great part of their stupendous height. The operation by which they were cut off so abruptly, and left...

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