Handy Book of MeteorologyW. Blackwood and Sons, 1868 - 371 sider |
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Side 18
... column rises or falls above this point , and to proportioned to this rate . a clumsy method , but , as computation , it would give rise to frequent mistakes . The error is the less the more the surface of the cistern exceeds that of the ...
... column rises or falls above this point , and to proportioned to this rate . a clumsy method , but , as computation , it would give rise to frequent mistakes . The error is the less the more the surface of the cistern exceeds that of the ...
Side 19
... column . In these slits is placed a vernier , V , which slides up and down by turning the screw , H. When the height of the barometer is required to be taken , the screw H is turned till the horizontal edge of the vernier forms a ...
... column . In these slits is placed a vernier , V , which slides up and down by turning the screw , H. When the height of the barometer is required to be taken , the screw H is turned till the horizontal edge of the vernier forms a ...
Side 20
... column to about half an inch from the top of the tube ; and having slowly inverted the instrument , place the top of it against a yielding substance , such as the boot , and tap gently on the cistern with the palm of the hand , so as to ...
... column to about half an inch from the top of the tube ; and having slowly inverted the instrument , place the top of it against a yielding substance , such as the boot , and tap gently on the cistern with the palm of the hand , so as to ...
Side 25
... column of spirits of wine rises or falls with the pressure of the air . To insure uniformity in its working , it requires to be kept as near as possible at the same temperature . It is of no use as a scien- tific instrument ; but it may ...
... column of spirits of wine rises or falls with the pressure of the air . To insure uniformity in its working , it requires to be kept as near as possible at the same temperature . It is of no use as a scien- tific instrument ; but it may ...
Side 26
... column . If the vernier and scale occupy the relative positions as in fig . 10 , then the height of the barometer is 30.00 inches . But if they stand as in fig . 11 , we set about reading it in this way :-( 1 . ) The zero of the vernier ...
... column . If the vernier and scale occupy the relative positions as in fig . 10 , then the height of the barometer is 30.00 inches . But if they stand as in fig . 11 , we set about reading it in this way :-( 1 . ) The zero of the vernier ...
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America antisolar point ascending Asia Atlantic atmospheric pressure average barometer blow Britain calm causes centre charts cirrus cirrus cloud cistern climate cloud coast cold colder column condensed continent Crown 8vo daily dew-point diminished direction dry air earth earth's surface east Edition electricity equator equatorial current Europe evaporation falls Fcap feet flow globe greater heat height hemisphere Hence high pressure higher hour humidity hygrometer Iceland inch of mercury inches increase Indian Ocean isobarometric lines January John Herschel July latitudes low pressure lower Mauritius maximum mean temperature mercury Meteorological meter miles minimum moisture monsoon months northern northern hemisphere Norway observations occur ocean Orkney perature Plate polar current polarisation prevail Professor rain rainfall regions rises round Scotland season snow soil south-west St Petersburg storms summer temperature terrestrial radiation thermometers tion tropics tube upper currents vols weather wind winter Yakutsk
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