Labels:book | bulletin board | crt screen | earth | monitor | person | poster | reckoner | sky | skyscraper | vegetarianism | windowpane OCR: In terms of the subsidiary variable y2 dei fined by 0.409 cos Y1 [radians] (13) and north latitude in degrees 06-] 90] we have /L (14) cos XNOON cos 06 The duration of the day time AT approximated 0.26 sin y2 sin L AT arc cos cos [hours] (15) cos y where the the surface factor the 0.26 earth approximately represents the difference equation between 15 there sunrise follows (or sunset) at of and at F2 layer heights. From TNOON T/2 mod (24) (16) TDAWN TNOON T/2 mod (24) TSUNSET where TNOON C given in equation 12 CONTROL POINTS The equations of the foregoing sections yield f.F2 at a Specified (north) latitude L, and (west) longitude W are In an actual application, the latitude and longitude of the specific receiver and transmitter given quantities and L and W are to be evaluated at control Fro ...
