Elementary MeteorologyK. Paul, Trench & Company, 1898 - 410 pagini |
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Pagina 8
... appears on the equator on March 21 , when he is going northwards , and on September 22 , when he is going southwards . On June 21 he is far- thest from the equator on the northern side , when he attains his greatest northern declination ...
... appears on the equator on March 21 , when he is going northwards , and on September 22 , when he is going southwards . On June 21 he is far- thest from the equator on the northern side , when he attains his greatest northern declination ...
Pagina 9
... appears to stand still in the sky , and these epochs are called the solstices . In the latitude of London the length of the longest day , at the summer solstice , is 16 hours 34 minutes , and of the shortest day , at the winter solstice ...
... appears to stand still in the sky , and these epochs are called the solstices . In the latitude of London the length of the longest day , at the summer solstice , is 16 hours 34 minutes , and of the shortest day , at the winter solstice ...
Pagina 41
... appears that for Greer wich the series 6.2.10 gives the most accurate results . At the first International Meteorological Congress at Vienna , 1873 , the following definitions of the different classes of stations were adopted ...
... appears that for Greer wich the series 6.2.10 gives the most accurate results . At the first International Meteorological Congress at Vienna , 1873 , the following definitions of the different classes of stations were adopted ...
Pagina 70
... appear to coincide with two lines on the scale ; in this case the intermediate thousandth of an inch should be set down as the reading . Thus , if the reading appears to be 29.684 ins . or 29.686 ins . , the mean , 29.685 ins . , should ...
... appear to coincide with two lines on the scale ; in this case the intermediate thousandth of an inch should be set down as the reading . Thus , if the reading appears to be 29.684 ins . or 29.686 ins . , the mean , 29.685 ins . , should ...
Pagina 72
... of the metal below , appear exactly to touch each other . The instrument thus described is For- tin's Barometer ( fig . 12 ) , and its use involves two opera- tions ; one , the setting of the ivory point 12 ELEMENTARY METEOROLOGY .
... of the metal below , appear exactly to touch each other . The instrument thus described is For- tin's Barometer ( fig . 12 ) , and its use involves two opera- tions ; one , the setting of the ivory point 12 ELEMENTARY METEOROLOGY .
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Termeni și expresii frecvente
action America amount anemometers anti-cyclones appears Arctic Atlantic atmosphere atmospherical circulation barometer blows bulb calm Cape changes Chapter circle circles of latitude climate cloud coast cold column condensation continents curve direction diurnal earth east Easterly eastern electricity equator equatorial evaporation fact fall feet gauge globe Gulf Stream heat height high latitudes hygrometer inches Indian Ocean instrument isobars isotherm isothermal charts January July land latent heat lightning lower lowest mean temperature mercury Meteorological miles moisture Monsoon month motion mountain North northern observations Pacific pass perature phenomena phenomenon Plate pressure produced radiation rain rainfall range readings region rise round scale Siberia side snow South South-east southern hemisphere stations storms strata stratum summer surface temperature thermometer thunderstorms tion Trade wind tropical tube upper vapour velocity warm weather Westerly western winter zone
Pasaje populare
Pagina 201 - Can you explain this omen? Phys. A rainbow can only occur when the clouds containing or depositing the rain are opposite to the sun — and in the evening the rainbow is in the east, and in the morning in the west; and as our heavy rains, in this climate, are usually brought by the westerly...
Pagina 366 - I have never been able to conceive, that the wind in violent storms moves only in circles. On the contrary, a vortical movement, approaching to that which may be seen in all lesser vortices, aerial or aqueous, appears to be an essential element of their violent and long continued action, of their increased energy towards the centre or axis, and of the accompanying rain.
Pagina 187 - Curvature. — The rod should not be bent abruptly round sharp corners. In no case should the length of the rod between two points be more than half as long again as the straight line joining them. Where a string course or other projecting stone work will admit of it, the rod may be carried straight through, instead of round the projection.
Pagina 188 - It is essential that the lower extremity of the conductor be buried in permanently damp soil; hence proximity to rain-water pipes, and to drains, is desirable. It is a very good plan to make the conductor bifurcate close below the surface of the ground, and adopt two of the following methods for securing the escape of the lightning into the earth. A strip of copper tape may be led from the bottom of the rod to the nearest gas or water main — not merely to a lead pipe...
Pagina 65 - The height of the column in the tube above the level of the mercury in the cistern is measured by means of a graduated scale placed beside it.