 | 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 difference will 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... | |
 | Daniel Defoe - 1815 - 602 pages
...it was south of the «un. 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 - 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... | |
 | David Thomson - 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 - 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,...the sum, or difference, will be the latitude, of the same name with the greater. * When the horizon-glass of the Instrument has not been adjusted so as... | |
 | 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...the sum or difference will be the latitude, of the same name with the greater. * The right ascensions and declinations of the stars contained in Table... | |
 | David Thomson (inventor of the longitude scale.) - 1845 - 318 pages
...observed. 2. Find the declination of the Star by the Table of Fixed Stars, p. 432, Nautical Almanac. 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... | |
 | Edward Bruce (bookseller.), John Bruce - 1846 - 398 pages
...altitude from 90° for the zenith distance, which is N. if the zenith be north of the sun ; or S., if it be the contrary. 2. If the zenith distance and...the sum or difference will be the latitude of the same name with the greater. EXAMPLES. 1. The sun's meridian altitude on the 18th of May, was 42° 13'... | |
 | Basil Jackson - 1847 - 410 pages
...meridian of the place (when the longitude is considerable), noting whether it be north or south. Then, if the zenith distance and declination be both north...the sum or difference will be the latitude, of the same name with the greater.f EXAMPLE I. June 18th, 1828, the meridian altitude of the sun's lower limb... | |
 | James MIDDLETON (F.G.S.) - 1848 - 262 pages
...zenith distance, which is north if the zenith be north of the sun, or south if it be the contrary. If the zenith distance and declination be both north or both south, add them together ; but if the one be north and the other south, subtract the less from the greater, and the sum or difference... | |
| |
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 the greater.*... 
