 | Olinthus Gilbert Gregory - 1802 - 590 pages
...declination are boih north, or both soit/fi, add them together ; but if one be north , and the other Jbitt/i, subtract the less from the greater, and the sum or...be the latitude, of the same name with the greater. The truth of this rule may be shewn by referring to fig. 7, PI. I. where HR, EQ, and Z, represent as... | |
 | Daniel Defoe - 1815 - 602 pages
...it was south of the Ğun. If the sun's zenith distance, and its declination, be both north or boi h south, add them together ; but if one be north, and...the other south, subtract the less from the greater quautity, and the result of such operation will be the geographical position required, being of the... | |
 | Charles Hutton - Astronomy - 1815 - 686 pages
...of the' same name' with the two given latitudes. But if the latitudes be of different names, the one north and the other south ; subtract the less from the greater, and divide the remainder by 2, so shall the quotient be the middle latititude, of the same name with the... | |
 | Edward Bruce (bookseller.) - 1821 - 418 pages
...altitude from 90°, for the zenith distance, which ii north, if the zenith be north of the sun; or south, if it be the contrary. 2. If the zenith distance and...the sum or difference will be the latitude of the tame name with the greater. EXAMPLES. 1. Observed the sun's meridian altitude on the 18th of May, and... | |
 | Thomas Kerigan - Nautical astronomy - 1828 - 776 pages
...their sum will be the latitude of the place of observation ; but if they are of contrary names, their difference will be the latitude, of the same name with the greater term. Example 1. February 3d, 1825, in longitude 80? W., at 11*28730! apparent time, the meridional... | |
 | David Thomson - Longitude - 1831 - 316 pages
...constella0on is near the meridian below the Pole. 11 2. Find the Declination of the Star by Table L Then if the Zenith Distance and Declination be both North, or both South, add them together, the sum will be the Latitude, of the same Name with the Declination ; but if one be North and the other... | |
 | John William Norie - Nautical astronomy - 1836 - 510 pages
...ship (when the longitude is considerable) by Table XI., noting whether it be north or south : then if the zenith distance, and declination, be both north,...be the latitude, of the same name with the greater. * When the horizon-glass of the Instrument has not been adjusted so as to be parallel to the index-glass... | |
 | Thomas Kerigan - Nautical astronomy - 1838 - 804 pages
...their sum will be the latitude of the place of observation} but if they are of contrary names, their difference will be the latitude, of the same name with the greater term, Example. December 30th, 1836, in longitude 80? west, at 15*20T5: mean time, the meridional altitude... | |
 | William Augustus Norton - Astronomy - 1839 - 530 pages
...of the same name their sum will be equal to the latitude ; but if they are of different names, their difference will be the latitude, of the same name with the greater. This method supposes the declination of the body to be known. The declination of a star or of the sun... | |
 | John William Norie - 1840 - 184 pages
...observation. Take the star's declination from Table XIV., and reduce it to the time of observation.* Then, if the zenith distance and declination be both north...be the latitude, of the same name with the greater. * The right ascensions and declinations of the stars contained in Table XIV. being computed for the... | |
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... south. Then, if the zenith distance and declination be both north or both south, add them together; but if one be north and the other south, subtract the less from the greater, and the sum or difference will be the latitude, of the same name with... 
