Astronomical, Magnetic and Meteorological Observations Made at the United States Naval Observatory
The Transit Circle, whose object-glass has a focal length of 145 inches, and a clear aperture of 8.52 inches, was used with an eye-piece which ... The Kesscls Sidereal Clock, which is the standard of the Observatory, was employed in connection with A ... autoinatic, and the arraugeineiit of the circuits, when the signals employed are breaks, is shown in the diagram, Fig. l. ... 12a#39;.xpeia#39;ic|ice having shown that such signals cannoi-, a#39; a a#39;a U 10aquot;, a#39;! lilies of telcgiapli wire with the same degree ofanbsp;...
| Title | : | Astronomical, Magnetic and Meteorological Observations Made at the United States Naval Observatory |
| Author | : | United States Naval Observatory |
| Publisher | : | - 1870 |
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