Handy Book of MeteorologyWilliam Blackwood, 1868 - 371 sider |
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Side 16
... falls , will render the instrument useless for accurate observation . 31. In filling tubes , air and moisture get mixed up with the mercury , and , if not expelled , will soon ascend to the top of the tube , and , forming an atmosphere ...
... falls , will render the instrument useless for accurate observation . 31. In filling tubes , air and moisture get mixed up with the mercury , and , if not expelled , will soon ascend to the top of the tube , and , forming an atmosphere ...
Side 17
... falls in the tube . 33. The effect of capillarity is to depress the column , the amount of the depression depending on the internal diameter of the glass tube . Thus , if the diameter of the tube be half an inch , the error arising from ...
... falls in the tube . 33. The effect of capillarity is to depress the column , the amount of the depression depending on the internal diameter of the glass tube . Thus , if the diameter of the tube be half an inch , the error arising from ...
Side 18
... falls A H apply a correction This is not only it involves some above this point , and to proportioned to this rate ... fall or rise in the tube is spread over a larger surface . Hence it is desirable that the cisterns of barometers be ...
... falls A H apply a correction This is not only it involves some above this point , and to proportioned to this rate ... fall or rise in the tube is spread over a larger surface . Hence it is desirable that the cisterns of barometers be ...
Side 22
... falls with the fluctuations of the barometer , and a pointer fixed to the horizontal axis being turned by this means indicates the pressure by figures on a dial . Since the mercury only rises or falls in the open end of the siphon to ...
... falls with the fluctuations of the barometer , and a pointer fixed to the horizontal axis being turned by this means indicates the pressure by figures on a dial . Since the mercury only rises or falls in the open end of the siphon to ...
Side 24
... falls . To obviate error from the in- creased pressure of the air when its temperature is raised , a thermometer and sliding scale are added to the instrument , so that it may be adjusted to the tem- perature at each observation . It is ...
... falls . To obviate error from the in- creased pressure of the air when its temperature is raised , a thermometer and sliding scale are added to the instrument , so that it may be adjusted to the tem- perature at each observation . It is ...
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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 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 St Petersburg storm summer temperature terrestrial radiation thermometers tion tropics tube upper currents vapour vols weather wind winter Yakutsk