The Edinburgh Journal of ScienceWilliam Blackwood, 1831 |
Other editions - View all
Common terms and phrases
aberration achromatic achromatic object-glasses acid ancient angle angular aperture aperture aplanatic appear arch atomic weights aurora axis Babbage bismuth brilliant cairns Canajoharie cemented character colour common compound considered correct decline degree diamond discovery effect England English engyscope equal experiments eye-piece feldspar fire focal distance fossil Fredonia geologists geology give glass green Hamburgh Herschel hills honour horizon inch focus Johnston Kyles of Bute lens lenses lines Lowville mean metals microscope nature nearly object object-glass observations obtained opinion Orkney oxide pencil perfect philosophers plane polarization Pompey portion present prism Professor quartz refraction refrangibility remarks rock Royal Society Sanday sandstone says scientific Scotland seen side silver specific heats spectrum spherical spherical aberration St Lawrence stones suppose surface telescope theory thickness tint tion trachyte Utica vanadium vitrified forts vitrified sites weight white light whole yellow
Popular passages
Page 89 - ... often seriously asked a person whether a flower was blue or pink, but was generally considered to be in jest. Notwithstanding this, I was never convinced of a peculiarity in my vision, till I accidentally observed the colour of the flower of the Geranium zonale by candle-light, in the Autumn of 1792. The flower was pink, but it appeared to me almost an exact sky-blue by day; in candle-light however, it was astonishingly changed, not having then any blue in it, but being what I called red, a colour...
Page 99 - Brewster stated" as the law, which in all cases determines this angle, that " the index of refraction is the tangent of the angle of polarization.
Page 363 - A primrose by a river's brim A yellow primrose was to him, And it was nothing more.
Page 165 - ... from the consolidation of perhaps vegetable matter, which gradually acquires a crystalline form, by the influence of time and the slow action of corpuscular forces.
Page 255 - Series, we have given abstracts of the " Returns of Meteorological Observations made to the Regents of the University of the State of New York for 1826, 1828, and 1829.
Page 90 - The flower was pink, but it appeared to me almost an exact sky-blue by day ; in candlelight, however, it was astonishingly changed, not having then any blue in it, but being what I called red — a colour which forms a striking contrast to blue. Not then doubting but that the change of colour would be equal to all, I requested some of my friends to observe the phenomenon, when I was surprised to find they all agreed that the colour was not materially different from what it was by daylight except...
Page 1 - Here whole branches of continental discovery are unstudied, and, indeed, almost unknown even by name. It is vain to conceal the melancholy truth. We are fast dropping behind.
Page 2 - Thenard's experiments on the oxygenated acids ? Oersted's and Berzelius's on the radicals of the earths ? Balard's and Serullas's on the combination of brome, and a hundred other splendid trains of research in that fascinating science ? Nor need we stop here. There are, indeed, few sciences which would not furnish matter for similar remark. The causes are at once obvious and deep seated ; but this is not the place to discuss them.
Page 91 - I should call different shades of yellow. The difference between the green part and the blue part is very striking to my eye : they seem to be strongly contrasted. That between the blue and purple is much less so. The purple appears to be blue much darkened and condensed. In viewing the flame of a candle by night through the prism, the appearances are pretty much the same, except that the red extremity of the image appears more vivid than. that of the solar image.
Page 89 - All, indeed, that is required for this purpose, is, that the same object should uniformly make the same impression on each mind; and that objects which appear different to one should be equally so to others. It will, however, scarcely be supposed, that any two objects, which are every day before us, should appear hardly distinguishable to one person, and very different to another, without the circumstance immediately suggesting a difference in their faculties of vision ; yet such is the fact, not...