The Elements of Natural Or Experimental Philosophy: Illustrated with Copper Plates, Τόμος 3

Εξώφυλλο
T. Cadell and W. Davies, 1803
 

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Δημοφιλή αποσπάσματα

Σελίδα 288 - When the rising sun shines from that point whence its incident ray forms an angle of about 45° on the sea of Reggio, and the bright surface of the water in the bay is not disturbed either by the wind or...
Σελίδα 293 - ... let this mixture be rammed into a crucible of about an inch and a half in depth, till it be almoft full ; and let it be placed in...
Σελίδα 289 - ... palms, and nearly down to the sea, the observer will behold the scene of the same objects not only reflected from the surface of the sea, but likewise in the air, though not so distinct or well defined as the former objects from the sea.
Σελίδα 289 - Lastly, if the air be slightly hazy and opaque, and at the' same time dewy and adapted to form the Iris, then the abovementioned objects will appear only at the surface of the sea, as in the first case, but all vividly coloured or fringed witH red, green, blue, and other prismatic colours *. " As the day advances, the fairy scene gradually disappears.
Σελίδα 288 - Reggio, and the bright surface of the water in the bay is not disturbed either by the wind or the current, the spectator being placed on an eminence of the city, with his back to the sun, and his face to the sea ; on a sudden there appear in the water, as in a catoptric theatre, various multiplied objects, viz.
Σελίδα 420 - THE electric organs of the torpedo are placed on each side of the cranium and gills, reaching from thence to the semicircular cartilages of each great fin, and extending longitudinally from the anterior extremity of the animal to the transverse cartilage, which divides the thorax from the abdomen...
Σελίδα 205 - When the rings were examined by looking through the lenses in the opposite direction, the central spot appeared white, and, in other rings, red was opposite to blue, yellow to violet, and green to a compound of red and violet ; the colours formed by the transmitted and...
Σελίδα 144 - If two triangles have two angles of the one equal to two angles of the other, each to each, and one side equal to one side, viz.
Σελίδα 525 - ... the attraction of their matter. There is an attraction exerted between the overcharged extremity of one magnetic body and the undercharged extremity of the other, on account of the attraction between that fluid and the matter of the body ; but, to explain the repulsion which takes place between their undercharged extremities, we...
Σελίδα 280 - ... the distance of the small circle, and also of the parallel lines from your eye; divide then the distance of the former by that of the latter, and you will have the magnifying power of the telescope required.

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