Elementary MeteorologyK. Paul, Trench & Company, 1898 - 410 pagini |
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Pagina 4
... course for more than a few hours , and we must admit that it has made next to no progress at all in gaining an insight into the agencies which are at work in producing the various phases of weather . Thirdly , we have the highest object ...
... course for more than a few hours , and we must admit that it has made next to no progress at all in gaining an insight into the agencies which are at work in producing the various phases of weather . Thirdly , we have the highest object ...
Pagina 8
... course of a year the apparent path of the sun in the sky describes a circle , called the ecliptic ; the plane of this circle cuts the plane of the equator , supposed to be extended to the heavens , at the angle of 23 ° 27 ′ 44 ′′ , or ...
... course of a year the apparent path of the sun in the sky describes a circle , called the ecliptic ; the plane of this circle cuts the plane of the equator , supposed to be extended to the heavens , at the angle of 23 ° 27 ′ 44 ′′ , or ...
Pagina 12
... course subject to the action of gravity , and , being gaseous , is endowed with the qualities of elasticity and great sensitiveness to the effects of heat , & c . Its condition , therefore , at any place is determined by the balance ...
... course subject to the action of gravity , and , being gaseous , is endowed with the qualities of elasticity and great sensitiveness to the effects of heat , & c . Its condition , therefore , at any place is determined by the balance ...
Pagina 24
... course causes it to hold less mercury , and , by forcing a portion of its contents into the tube , makes the instrument read too high . The progress of this contraction is not perfectly regular , and it may last over a considerable ...
... course causes it to hold less mercury , and , by forcing a portion of its contents into the tube , makes the instrument read too high . The progress of this contraction is not perfectly regular , and it may last over a considerable ...
Pagina 30
... course taken from the position of the index , but the column of spirit itself will mark the temperature at any time , and if the two readings are identical it is a sign that the temperature is at its lowest and probably falling ...
... course taken from the position of the index , but the column of spirit itself will mark the temperature at any time , and if the two readings are identical it is a sign that the temperature is at its lowest and probably falling ...
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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.