 | Thomas Keith - 1811 - 388 Seiten
...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 hours passed over... | |
 | John Lathrop - 1812 - 218 Seiten
...at that instant. RULE. Find the sun's declination and markit on the brass meridian ; 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... | |
 | Thomas Keith - 1819 - 380 Seiten
...given, to find ivhut hour it is at any other place. Rule. Bring the place at which the time is given to the brass meridian, and set the index of the hour circle io 12 ;* turn the globe till the other place comes to the meridian, and the hours passed over by the... | |
 | Thomas Keith - 1821 - 408 Seiten
...right ascension and declination, from an ephemeris, and mark her place on the globe ; bring the sun's place to the brass meridian, and set the index of the hour circle to 12; turn the globe westward till the moon's place comes to the meridian, and the hours passed over by the index will shew... | |
 | James M'Intire - 1823 - 232 Seiten
...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 {o 1 2; turn the globe eastward till the given place comes to the horizon, and the hours passed over... | |
 | Jacob Abbot Cummings - 1825 - 216 Seiten
...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... | |
 | Thomas Keith - 1826 - 360 Seiten
...hemisphere, under the same degree of latitude, you will find the Antceci. For the Periaci. Bring the given place to the brass meridian, and set the index of...the index points to the other 1 2, then under the latitude of the given place you will find the Periceci. For the Antipodes. Bring the given place to... | |
 | Thomas Keith - 1826 - 400 Seiten
...mark hs longitude on the equator. Count 180 degrees on the equator either eastward or westward, and under the same degree of latitude with the given place, but in the opposite hemisphere, you will find the Antipodes^ . . i( * EXAMPLES. 1. Required the Antipodes to the island... | |
 | James M'Intire - 1826 - 234 Seiten
...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 1 -; then, turn the globe eastward or westward, according as the given time is past or before noon,... | |
 | Hervey Wilbur - 1831 - 170 Seiten
...latitude, then under the same degree of latitude, in the opposite hemisphere you will find the Anteeci. Set the index of the hour circle to 12, turn the globe half round, or until the index points to the other 12 ; then under that degree on the brass meridian, which is the... | |
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Find the sun's declination and elevate the north or south pole, according as the 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... 
