A Handy Book of MeteorologyWilliam Blackwood, 1868 - 371 páginas |
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Página 19
... lower part of which is seen plunged into the mercury in the cistern at T , is enclosed in a brass tube , which extends continuously from the brass box , B , to the top of the instrument . This brass tube is made with two opposite slits ...
... lower part of which is seen plunged into the mercury in the cistern at T , is enclosed in a brass tube , which extends continuously from the brass box , B , to the top of the instrument . This brass tube is made with two opposite slits ...
Página 21
... lower the mercury in the tube by turning the screw , P , before unfastening the float , F ; for if this be not attended to , the pressure applied by the screw , P , will cause the mercury to flow out at the aperture of the float , thus ...
... lower the mercury in the tube by turning the screw , P , before unfastening the float , F ; for if this be not attended to , the pressure applied by the screw , P , will cause the mercury to flow out at the aperture of the float , thus ...
Página 22
... lower limb with the air , by which the mercury gets foul , and , adhering to the tube , impedes the smooth working of the instrument . In narrow tubes this becomes a very serious objection . 40. The common Wheel Barometer , the popular ...
... lower limb with the air , by which the mercury gets foul , and , adhering to the tube , impedes the smooth working of the instrument . In narrow tubes this becomes a very serious objection . 40. The common Wheel Barometer , the popular ...
Página 27
... lower than 28 ° .5 , by noting how many degrees the given temperature is below 28 ° .5 , and then , looking at the temperature which is just so far above 28 ° .5 , the correction will be found , but it must be added instead of being ...
... lower than 28 ° .5 , by noting how many degrees the given temperature is below 28 ° .5 , and then , looking at the temperature which is just so far above 28 ° .5 , the correction will be found , but it must be added instead of being ...
Página 33
... lower station , or at the sea - level when reduced to 32 ° , to be 30.000 inches , and temperature of the air 51 ° ; and the barometer at the higher station 29.510 inches , and temperature of the air 49 ° . The mean of the two tempera ...
... lower station , or at the sea - level when reduced to 32 ° , to be 30.000 inches , and temperature of the air 51 ° ; and the barometer at the higher station 29.510 inches , and temperature of the air 49 ° . The mean of the two tempera ...
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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 force 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 thermometers tion tropics tube upper currents vapour vols weather wind winter Yakutsk