Elementary MeteorologyK. Paul, Trench & Company, 1893 - 410 pagini |
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Termeni și expresii frecvente
action America amount anemometers anti-cyclones appears Arctic Atlantic Atmometer atmosphere barograph barometer blows bulb Cape changes Chapter circles of latitude climate cloud coast cold column condensed corresponding curve direction diurnal earth east eastern Edition electricity equator equatorial evaporation fact fall feet globe Gulf Gulf Stream heat height high latitudes hygrometer inches Indian Ocean instrument isobars isotherm January Kew Observatory land latent heat 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 regions rise round scale sea-level Siberia side snow South South-east southern hemisphere Spitzbergen stations storms stratum summer surface temperature thermometer thunderstorms tion Trade wind tropical tube upper velocity vernier warm weather Westerly western winter zone
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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 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.
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 54 - A temperature above 80° was frequently recorded by this thermometer, whilst the temperature in the shade remained below freezingpoint. These high readings were probably due to the hygrometric conditions of the atmosphere ; the air, on account of the intense...