| Thomas Keith - 1810 - 420 sider
...c«ntre. The correction is generally very small, and is only necessary where great accuracy is required. **The observer may be considered in three different...observer, when produced, would pass without the objects.** (D) FIRST, let the observer be at D, in a line between the objects B and c, viz. on one side of the... | |
| George Adams - 1813 - 534 sider
...observer may be considered in three different positions with respect to the centre and the objects; for **he is either in a line with the centre and one of** these objects, or in an intermediate one, that is, a line from this centre to the observer produced... | |
| Thomas Keith - 1826 - 442 sider
...centre. The correction is generally very small, and is only necessary where great accuracy is required. **The observer may be considered in three different...observer, when produced, would pass without the objects.** (D) FIRST, let the observer be at D, in a line between the objects в and c, viz. on one side of the... | |
| Thomas Keith - 1839
...centre. The correction is generally very small, and is only necessary where great accuracy is required. **The observer may be considered in three different...observer, when produced, would pass without the objects.** (175) FIRST, let the observer be at D, in a line between the objects B and c, viz. on one side of the... | |
| Sir Henry Edward Landor Thuillier - 1851 - 718 sider
...observer may be considered in three different positions with respect to the centre and the objects ; for **he is either in a line with the centre, and one of** these objects, or in an intermediate one, that is, a line from this centre to the observer produced,... | |
| Anthony Nesbit - 1859 - 450 sider
...centre. The correction is generally very small, and is only necessary where great accuracy is required. **The observer may be considered in three different...observer, when produced, would pass without the objects.** • Philosophical Transactions for 1797, p. 29, « stq. First. Let the observer be at D, in a line... | |
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