 | Alexander Adam - 1794 - عدد الصفحات: 748
...latitude of the place, fctting it due north and fouth by the needle, with the hour-index pointed to xii; then turn the globe on its axis till the index points to the given hour of the night; then the upper hemifphere of the globe will reprefent the vifible face of the heavens... | |
 | Thomas Hodson - 1806 - عدد الصفحات: 488
...world. Having found the Sun's place in the ecliptic, and brought it to the meridian, fet the index to ia o'clock at noon ; then turn the globe on its axis...ftar in' the heavens correfponding in fituation to thofe on the globe. PROBLEM II. Tofind the Declination and right AJcenfan of any Star. Bring the ftar... | |
 | Benjamin Workman - 1809 - عدد الصفحات: 218
...given latitude of the phice, arid day of the month, setting it due north and south by the needle ; then turn the globe on its axis till the index points to the given hour of the night. Then all the up. per hemisphere of the globe will represent'the visible face of the heavens... | |
 | William Thackwray - 1810 - عدد الصفحات: 160
...the given latitude and day of the month at noon, setting it also due north and south by the needle ; turn the globe on its axis till the index points to the proposed hour of the night (if before noon eastward, if after noon westward) ; then all the upper hemisphere... | |
 | Thomas Keith - 1811 - عدد الصفحات: 388
...sun's place in the ecliptic to the brass meridian, and set the index of the hour circle to twelve ; turn the globe on its axis till the index points to the other twelve ; and the number of degrees between the sun's place and the horizon, counted on the brass... | |
 | George Adams - 1812 - عدد الصفحات: 552
...of the place ' i PIIOBLEMS. 339 and day of the month, setting it due north and south by the needle ; then turn the globe on its axis till the index points to the given hour of the nieht; then Jo o all the upper hemisphere of the globe will represent the visible face of the... | |
 | George Adams - 1812 - عدد الصفحات: 586
...the given latitude of the place and day of the month, setting it due north and south by the needle ; then turn the globe on its axis till the index points to the given hour of the night ; then all the upper hemisphere of the globe will represent the visible face of the heavens... | |
 | Thomas Keith - 1819 - عدد الصفحات: 380
...sun's place in the ecliptic to the brass meridian, and set the index of the hour circle to twelve ; turn the globe on its axis till the index points to the other twelve; and the number of degrees between the sun's place and the horizon, counted on the brass... | |
 | James Ryan - 1827 - عدد الصفحات: 408
...sun's place in the ecliptic to the brazen meridian, and set the index of the hour circle to twelve ; turn the globe on its axis till the index points to the other twelve ; ami the number of degrees between the sun's place and the horizon, counted on the meridian... | |
 | Joseph Guy - 1832 - عدد الصفحات: 412
...sun's place in the ecliptic to the brass meridian, and set the index of the hour-circle to twelve ; turn the globe on its axis till the index points to the other twelve ; and the number of degrees between the sun's place and the horizon, counted on the brass... | |
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... meridian towards that part of the horizon marked north, will be the sun's altitude. Examples. 1. What is the sun's altitude at the North Cape in Lapland, when it is midnight at Alexandria in Egypt... 
