The New Encyclopaedia Britannica: -[30] Macropaedia: knowledge in depthEncyclopaedia Britannica, 1974 - Encyclopedias and dictionaries |
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Page 57
... direction . Instruments for recording wind speed and direction are some of the most elaborate of the routine surface hardware . Wind direction ( the direction from which the wind is blowing ) is expressed in degrees , measured clockwise ...
... direction . Instruments for recording wind speed and direction are some of the most elaborate of the routine surface hardware . Wind direction ( the direction from which the wind is blowing ) is expressed in degrees , measured clockwise ...
Page 903
... direction indicated by a compass needle often varies considerably from true north though the reason for this was not understood till quite recently . The north magnetic pole , or the place on the earth to which a compass needle points ...
... direction indicated by a compass needle often varies considerably from true north though the reason for this was not understood till quite recently . The north magnetic pole , or the place on the earth to which a compass needle points ...
Page 908
... direction finding is almost as old as radio itself . It has been developed into an automatic direction finder ( ADF ) in which a motor turns the loop , the device originally being known as a “ radio compass " because it could guide the ...
... direction finding is almost as old as radio itself . It has been developed into an automatic direction finder ( ADF ) in which a motor turns the loop , the device originally being known as a “ radio compass " because it could guide the ...
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