The Quarterly Journal of Science and the Arts, Volumen 5John Murray, 1818 |
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Resultados 1-5 de 12
Página 202
... bubble to the middle by * These Instructions were printed by desire of the Council of the Royal Society , and copies were distributed among the proper per- sons employed on the above occasion . the screw which elevates or depresses one ...
... bubble to the middle by * These Instructions were printed by desire of the Council of the Royal Society , and copies were distributed among the proper per- sons employed on the above occasion . the screw which elevates or depresses one ...
Página 203
... bubble of the level which is near the agates , to the middle by means of the screw which acts on the piece projecting behind from the triangular support , taking particular care that the three legs of the support rest on a very firm ...
... bubble of the level which is near the agates , to the middle by means of the screw which acts on the piece projecting behind from the triangular support , taking particular care that the three legs of the support rest on a very firm ...
Página 207
... bubble to the middle of the level . Take the telescope out of the Ys , and turning it half round horizontally , replace it carefully in them , when if the bubble is not in the middle , cause it to return through half the quantity of ...
... bubble to the middle of the level . Take the telescope out of the Ys , and turning it half round horizontally , replace it carefully in them , when if the bubble is not in the middle , cause it to return through half the quantity of ...
Página 208
... bubble remains in the middle in both positions of the telescope , allowing sufficient time for the bubble to settle , when the axis of the instrument will be parallel to the horizon . 2. The telescope remaining as at first , and the ...
... bubble remains in the middle in both positions of the telescope , allowing sufficient time for the bubble to settle , when the axis of the instrument will be parallel to the horizon . 2. The telescope remaining as at first , and the ...
Página 210
... bubble to the middle of the level . Do the same , the vernier being at 90 ° , and repeat the operation if necessary , till the bubble remains stationary in the middle in both positions . A little before the time of the sun's first limb ...
... bubble to the middle of the level . Do the same , the vernier being at 90 ° , and repeat the operation if necessary , till the bubble remains stationary in the middle in both positions . A little before the time of the sun's first limb ...
Índice
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74 | |
81 | |
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231 | |
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291 | |
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106 | |
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396 | |
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Términos y frases comunes
Adam's Peak altitude ammonia angle appears arts ascertained atmosphere Author axis azimuth BAMBUSA blue bodies bubble Caldas da Rainha carbonate chemical chloride chronometer circle colours contains copper crystals Cyperacea degree direction DISPERIS distance Ditto earth effect exhibited experiments feet flame flax given number glass Glen Roy green Greenland Guaduas heat Hill and Bundy's horizontal hornblende hydrometer improvement inches instrument iron Lee's light liquid machine magnetic means measure meridian metal muriatic muriatic acid NASTUS nature nearly needle nitric acid object observed obtained oxide oxygen paper particles passing pendulum plate platinum potash pound produced proportion quantity quicksilver rays reflected reflectors result river rock Royal salt sciences SCIRPUS seen shew shewn Society solution species specific gravity supposed surface tabasheer tangent screw telescope temperature thermometer tion tube vernier vertical wire Zaire