The Elements of Natural Or Experimental Philosophy, Τόμος 3T. Cadell and W. Davies, 1803 |
Αναζήτηση στο βιβλίο
Αποτελέσματα 1 - 5 από τα 65.
Σελίδα 21
... lower degrees may be carried down as low as may be fuppofed neceffary for the cold of any particular climate . The mercurial thermometer needs not be graduated lower than 40 ° below o , because at about that degree mercury ceases to be ...
... lower degrees may be carried down as low as may be fuppofed neceffary for the cold of any particular climate . The mercurial thermometer needs not be graduated lower than 40 ° below o , because at about that degree mercury ceases to be ...
Σελίδα 25
... lower end , floating on the furface of the mercury , is carried up with it when it rifes , " while the piece at the upper end , being of the " fame diameter , keeps the body of the index parallel to the fides of the thermometrical tube ...
... lower end , floating on the furface of the mercury , is carried up with it when it rifes , " while the piece at the upper end , being of the " fame diameter , keeps the body of the index parallel to the fides of the thermometrical tube ...
Σελίδα 32
... lower part m gz of the glafs * See his very ingenious paper and calculation in the Philofophical Tranfactions for 1797. Art . XII . This method was contrived and ufed by the Chevalier de Bettancourt . See De Frony's Archit . Hydraul ...
... lower part m gz of the glafs * See his very ingenious paper and calculation in the Philofophical Tranfactions for 1797. Art . XII . This method was contrived and ufed by the Chevalier de Bettancourt . See De Frony's Archit . Hydraul ...
Σελίδα 35
Tiberius Cavallo. boil . Hence , upon mountains water boils at a lower temperature than on the plains * , and in closed veffels , or under an additional preffure , water can be heated to a much greater degree than 212 ° t . The fingular ...
Tiberius Cavallo. boil . Hence , upon mountains water boils at a lower temperature than on the plains * , and in closed veffels , or under an additional preffure , water can be heated to a much greater degree than 212 ° t . The fingular ...
Σελίδα 36
... lower than two or three feet ; below that depth the water continues fluid , and the cruft of ice itself contributes to preferve its fluidity . The heat of the earth which has been acquired during the fummer , undoubtedly prevents the ...
... lower than two or three feet ; below that depth the water continues fluid , and the cruft of ice itself contributes to preferve its fluidity . The heat of the earth which has been acquired during the fummer , undoubtedly prevents the ...
Συχνά εμφανιζόμενοι όροι και φράσεις
alfo alſo angle angle of incidence appear atmoſphere attraction battery becauſe body cafe caloric colours concave conductor confiderable confifts convex convex lens courſe defcribed degree diſcharge diſtance divifions eafily electric fluid electrified electrometer equal eſpecially eye lens faid falt fame fcreen fecond feems feen fhall fhews fhock fide filk filver fingle firſt fituated fize fmall focal diftance focus fome fometimes fouth fpark fpecific ftate ftrong fubftances fuch fufficient furface glaffes glafs glaſs heat hole inches increaſe inftrument infulated iron itſelf lefs lenfes light magnet magnifying meaſure mercury metallic moft moſt muft muſt neceffary needle nitrous acid north pole obferved object object lens paffing perfons phial Philofophical piece plate poffeffed pofitive pole prefent prifm purpoſe quantity rays reflected reflector refraction reprefents ſmall ſtate teleſcope temperature thefe thermometer theſe thofe thoſe tricity tube uſed veffel whilft wire zinc
Δημοφιλή αποσπάσματα
Σελίδα 287 - 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 291 - ... 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 287 - ... 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 287 - 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 287 - 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 418 - 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 203 - 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 140 - 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 513 - ... 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 278 - ... 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.