 | Frederick Walter Simms - 1834 - 134 pages
...interruption; whereas, in that backwards, you will lose sight of the reflected image about that angle. But in such distances, where the sun is out of the question,...as well as any other; for the rays incident on the index-glass will pass through the transparent half of the horizonglass, without much diminution of... | |
 | Benjamin Pike (Jr.) - 1848 - 482 pages
...interruption ; whereas, in that backwards, you will lose sight of the reflected image about that angle. But in such distances, where the sun is out of the question,...as well as any other ; for the rays incident on the index-glass will pass through the transparent half of the horizon-glass, without much diminution of... | |
 | Benjamin Pike - 1848 - 356 pages
...interruption ; whereas, in that backwards, you will lose sight of the reflected image about that angle. But in such distances, where the sun is out of the question,...as well as any other ; for the rays incident on the index-glass will pass through the transparent half of the horizon-glass, without much diminution of... | |
 | Frederick Walter Simms - 1850 - 184 pages
...interruption; whereas in that backwards, you will lose sight of the reflected image about that angle. But in such distances, where the sun is out of the question,...-glass will pass through the transparent half of the horizon-glass without much diminution of their brightness. "The advantages of this instrument, when... | |
 | Sir Henry Edward Landor Thuillier - 1851 - 826 pages
...interruption ; whereas, in that backwards, you will lose sight of the reflected image about that angle. But in such distances, where the sun is out of the question,...as well as any other ; for the rays incident on the index-glass will pass through the transparent half of the horizon-glass, without much diminution of... | |
 | John Fry Heather - 1859 - 198 pages
...interruption ; whereas in that backwards you will lose sight of the reflected image about that angle. • But in such distances, where the sun is out of the question, and when hi» altitude is taken with an artificial horizon (the shade being applied to the end of the telescope),... | |
 | John Fry Heather - 1874 - 220 pages
...interruption ; whereas in that backwards you will lose sight of the reflected image about that angle. But in such distances, where the sun is out of the question, and when h.; altitude ii taken with an artificial horizon (the shade being applien to the end of the telescope),... | |
 | 1835 - 596 pages
...interruption; whereas, in that backwards, you will lose sight of the reflected image about that angle. But in such distances, where the sun is out of the question,...as well as any other ; for the rays incident on the index-glass will pass through the trans"parent half of the horizon-glass without much diminution of... | |
| |
... whence it becomes necessary, when the angle to be taken is quite unknown, to observe forwards first, where the whole range is without interruption; whereas, in that backwards, you will lose sight of the reflected image about that angle. But in such... 