 ... bring the given star to the eastern part of the horizon ; then the number of degrees between the star and the eastern point of the horizon will be its rising amplitude ; and the degree of the equinoctial cut by the horizon will be the oblique ascension...  A Practical Treatise on the Use of the Globes, etc - Page 61by William Thackwray - 1810 - 118 pagesFull view - About this book
 | Thomas Keith - Astronomy - 1811 - 388 pages
...left hand, she is a morning star. When Venus is an evening star. Turn the globe westward till the sun comes to the western edge of the horizon ; the hours passed over by the index will be the time from noon when the sun sets : continue the motion of the globe westward till Venus comes to the... | |
 | John Lathrop - Astronomy - 1812 - 218 pages
...left hand, she is a morning star. When Venus is an evening star. Turn the globe westward till the sun comes to the western edge of the horizon ; the hours passed over by the index will be the time from noon when the sun sets , continue the motion of the globe westward till Venus comes to the... | |
 | Thomas Keith - Astronomy - 1819 - 380 pages
...the equinoctial cut by the horizon will be the oblique ascension ; set the index of the hour circle to 12, and turn the globe westward till the given...passed over by the index will be the star's diurnal arc, or continuance above the horizon. The Betting amplitude will be the number of degrees between... | |
 | James M'Intire - Globes - 1823 - 232 pages
...edge of the horiy.on, and set the index of the hour circle to 12; turn the globe westward on its axis till the given star comes to the western edge of the...passed over by the index will be the star's diurnal arc, or its continuance above the horizon for any day, at the given place. EXAMPLES. . ,: 1. What is... | |
 | Thomas Keith - Globes - 1826 - 360 pages
...equinoctial cut by the horizon will be the oblique ascension : set the index of the hour-circle to twelve, and turn the globe westward till the given star comes...passed over by the index will be the star's diurnal arc, or continuance above the horizon. The setting amplitude will be the number of degrees between... | |
 | James M'Intire - Globes - 1826 - 234 pages
...the eastern point of the horizon will be its rising amplitude: turn* the globe westward on its axis till the given star comes to the western edge of the horizon, then the degree of the equinoctial cut by the same edge of the horizon, will be the oblique descension,... | |
 | James Ryan - Astronomy - 1827 - 408 pages
...oblique ascension : keep the globe in this position, and set the index of the hour circle to 12; then turn the globe westward till the given star comes to the western part of the horizon ; the number of degrees between the star and the west point of the horizon will... | |
 | Joseph Guy - Astronomy - 1832 - 412 pages
...the equinoctial cut by the horizon will be the oblique ascension : set the index of the hour-circle to 12, and turn the globe westward till the given...passed over by the index will be the star's diurnal arc, or continuance above the horizon. The setting amplitude will be the number of degrees between... | |
 | Thomas Keith - Globes - 1832 - 370 pages
...equinoctial cut by the horizon will be the oblique ascension ; set the index of the hour-circle to twelve, and turn the globe westward till the given star comes to the western egde of the horizon ; the hours passed over by the index will be the star's diurnal arc, or continuance... | |
 | John Rorke - 1844 - 188 pages
...its rising amplitude. Set 12 on the hour circle to the meridian, and turn the globe westward till the star comes to the western edge of the horizon, the hours passed over on the hour circle will be the diurnal arc, or the time the star continues above the horizon in the... | |
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