 | Thomas Keith - 1811 - 388 páginas
...of the day at any place being given, tofind the surfs declination, and the day of the month. Rule, Bring the given place to the brass meridian, and set the index to twelve ; turn the globe eastward till the index has passed over as many hours as are equal to half... | |
 | William Enfield - 1811 - 476 páginas
...XVII. To find all those places where it is noon, at any given hour of the dayt at any given place. Bring the given place to the brass meridian, and set the index to the uppermost 12 ; then turn the globe till the index points to the given hour, and it will be noon... | |
 | John Lathrop - 1812 - 218 páginas
...declination is north or south, so many degrees above the horizon as are equal to. the sun's declination ; bring the given place to the brass meridian, and set the index of the hour circle to twelve ; then, if the given time be before noon, turn the globe westward as many hours as it wants... | |
 | George Adams - 1812 - 586 páginas
...all those places where it is noon, at any given hour of the day, at any given place. Getieral rule. Bring the given place to the brass meridian, and set the index to the uppermost XII ; then turn the globe till the index points to the given hour, and it will be... | |
 | George Adams - 1812 - 552 páginas
...all those places ivfiere if is noon, at any given hour of the day, at any given place. General rule. Bring the given place to the brass meridian, and set the index to the uppermost XII; then turn the globe till the index points to the given honr, and it will be noon... | |
 | Thomas Keith - 1819 - 380 páginas
...hour, in the following manner. Find the sun's declination, and elevate the pole to that declination ; bring the given place to the brass meridian and set the index to 12 ; then, if the given time be before noon, turn the globe westward as many hours as the time wants... | |
 | Thomas Keith - 1821 - 408 páginas
...; screw the quadrant of altitude on the brass meridian, over the degree of the sun's declination ; bring the given place to the brass meridian, and set the index of the hour-circle to twelve : turn the globe eastward till the given place comes to the horizon, and the... | |
 | Edward Bruce (bookseller.) - 1821 - 418 páginas
...21. 156 W. 20 S. 22. 150 W. 17 N. PROBLEM IX. Tojind the perioeci of any given place. BY THE GLOBE. Bring the given place to the brass meridian, and set the index to the upper 12. Turn the globe till the index point to the under 12, then that place which is below... | |
 | James M'Intire - 1823 - 232 páginas
...of the day being given at any place, to find the stw's declination, and the day of the month. RULE. Bring the given place to the brass meridian, and set the index of the nour circle to 12; turn the globe eastward on its axis till the index has passed over as many hours... | |
 | Jacob Abbot Cummings - 1825 - 216 páginas
...being given to find what Hour it is at any other place. Rule. Bring the place, where the hour is given, to the brass meridian, and set the index of the hour circle to that hour, then turn the globe till the proposed place comes under the meridian, and the index will... | |
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... declination ; bring the given place to the brass meridian, and set the index of the hour circle to 12. Turn the globe eastward till the given place comes to the horizon, and the index will shew the time of the sun's rising. 
