Elementary MeteorologyK. Paul, Trench & Company, 1898 - 410 pagini |
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Pagina 28
... flow gently back to the contraction . Both these thermometers are set in the same way . The instrument is taken in the hand and swung briskly , bulb downwards . This has the effect in Phillips's instrument of causing the index to come ...
... flow gently back to the contraction . Both these thermometers are set in the same way . The instrument is taken in the hand and swung briskly , bulb downwards . This has the effect in Phillips's instrument of causing the index to come ...
Pagina 29
... flow past the index without disturbing it , but if it falls below the point which the thermometer marked when set , the force of capillary attraction between the spirit and the index is sufficient to preclude the index being left dry ...
... flow past the index without disturbing it , but if it falls below the point which the thermometer marked when set , the force of capillary attraction between the spirit and the index is sufficient to preclude the index being left dry ...
Pagina 83
... flow suddenly to the top . If then the vacuum be perfect , a sharp click will be audible ; whereas if air should be present , the sound will be dull . Great caution is requisite in making this experiment , as , if the barometer be ...
... flow suddenly to the top . If then the vacuum be perfect , a sharp click will be audible ; whereas if air should be present , the sound will be dull . Great caution is requisite in making this experiment , as , if the barometer be ...
Pagina 120
... flows over a chilled surface , such as that of an ice - floe , or a cold ocean current , a fog is the result , and the density of the fogs on the Banks of Newfoundland is well known , where they are often as sharply defined in extent as ...
... flows over a chilled surface , such as that of an ice - floe , or a cold ocean current , a fog is the result , and the density of the fogs on the Banks of Newfoundland is well known , where they are often as sharply defined in extent as ...
Pagina 121
... flow down from glaciers and pass through the warmer air lying over the open country , produce dense fogs . À converse cause of the production of fogs is the sudden chilling of saturated air lying over a warm water surface . This is the ...
... flow down from glaciers and pass through the warmer air lying over the open country , produce dense fogs . À converse cause of the production of fogs is the sudden chilling of saturated air lying over a warm water surface . This is the ...
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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.