Handy Book of MeteorologyWilliam Blackwood, 1868 - 371 páginas |
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Página 156
... Hygrometers constructed on the principle of absorp- tion are faulty , not only because they are irregular in their action , but also because in the course of time they are sub- ject to great change . The most accurate hygrometers are ...
... Hygrometers constructed on the principle of absorp- tion are faulty , not only because they are irregular in their action , but also because in the course of time they are sub- ject to great change . The most accurate hygrometers are ...
Página 157
... hygrometers , but Regnault's requires less time in making the observations . Owing to the trouble and expense attending the ... hygrometer ( fig . 26 ) consists of two mercurial ther- mometers , which , being placed side by side , would ...
... hygrometers , but Regnault's requires less time in making the observations . Owing to the trouble and expense attending the ... hygrometer ( fig . 26 ) consists of two mercurial ther- mometers , which , being placed side by side , would ...
Página 159
... hygrometer . An additional observation at 3 P.M. , when the temperature is near the maximum , is recommended , as showing the greatest dryness of the air during the day . 329. By means of these two observations , the temperature of the ...
... hygrometer . An additional observation at 3 P.M. , when the temperature is near the maximum , is recommended , as showing the greatest dryness of the air during the day . 329. By means of these two observations , the temperature of the ...
Página 160
... hygrometers . These factors are given in Table VII . We shall find the dew - point of the above example by them . The factor opposite the dry - bulb 50 ° is 2.06 , and the difference between the two thermometers is 5 ° , therefore 2.06 ...
... hygrometers . These factors are given in Table VII . We shall find the dew - point of the above example by them . The factor opposite the dry - bulb 50 ° is 2.06 , and the difference between the two thermometers is 5 ° , therefore 2.06 ...
Página 161
... hygrometer . 336. Elastic Force of Vapour . - In an atmosphere of pure steam , its force at the earth's surface is the pressure it exerts ; and in an atmosphere of vapour and air perfectly mixed , the elastic force of each at the ...
... hygrometer . 336. Elastic Force of Vapour . - In an atmosphere of pure steam , its force at the earth's surface is the pressure it exerts ; and in an atmosphere of vapour and air perfectly mixed , the elastic force of each at the ...
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Palavras e frases frequentes
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