Publications of the Astronomical Society of the Pacific, Volumes 3-4Astronomical Society of the Pacific, 1891 |
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Page 14
... surfaces , equally dark in the accompanying sketches , might have been of quite different brightness when seen on the planet . In the blank forms the engraver inserted some bounding lines , which should have been omitted . Where these ...
... surfaces , equally dark in the accompanying sketches , might have been of quite different brightness when seen on the planet . In the blank forms the engraver inserted some bounding lines , which should have been omitted . Where these ...
Page 23
... surfaces . By carefully observing the extrem- ity of the pointer through a lens , however , a very fair degree of ac- curacy could be attained . The lamp was first balanced at the nor- mal temperature , and then , with the balance true ...
... surfaces . By carefully observing the extrem- ity of the pointer through a lens , however , a very fair degree of ac- curacy could be attained . The lamp was first balanced at the nor- mal temperature , and then , with the balance true ...
Page 24
... surface 4.5 sq . and its weight 0.0405 gramme . cms . , The weight of lamp and connecting wires together , ( with an in- verted glass beaker placed over all as a cover to check convection air currents ) was 124 grammes , and with this ...
... surface 4.5 sq . and its weight 0.0405 gramme . cms . , The weight of lamp and connecting wires together , ( with an in- verted glass beaker placed over all as a cover to check convection air currents ) was 124 grammes , and with this ...
Page 34
... surface , so far as may be assumed , but are seen from the earth as if projected on the plane through the centre of the sun , perpendicular to the line of sight . Also the coronal poles may not be taken as coinciding with any line of ...
... surface , so far as may be assumed , but are seen from the earth as if projected on the plane through the centre of the sun , perpendicular to the line of sight . Also the coronal poles may not be taken as coinciding with any line of ...
Page 35
... surface of the sun by taking y I , and compute the angle by 3 N sin2 0 8 π The peculiarity discovered by this equation is that all the rays of the corona are confined to a belt between 28 ° and 40 ° polar distance for each hemisphere ...
... surface of the sun by taking y I , and compute the angle by 3 N sin2 0 8 π The peculiarity discovered by this equation is that all the rays of the corona are confined to a belt between 28 ° and 40 ° polar distance for each hemisphere ...
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Common terms and phrases
angle aperture appears Astronomical Astronomical Society atmosphere August axis bright BURCKHALTER California Street Catalogue Chicago Section chronometer Comet Committee copies corona coronal pole crater dark diameter Directors disc distance drawings E. E. BARNARD eclipse elected elongated equator equatorial exposure eye-piece HOLDEN inches instrument J. M. SCHAEBERLE July Jupiter Jupiter's KEELER latitude Library Lick Observatory light limb London longitude lunar magnitude means meeting meridian meridian circle meteors minutes Miss CLERKE MOLERA Moon Mount Hamilton nebula negatives object observations obtained Pacific parallax Paris photographic PIERSON planet plates polar position present Prof Professor WEINEK proper motions Publications radiant rays reference book right ascension ring San Francisco satellite SCHMIDT Secretary seen shadow solar spectra spectrum spot stars stellar sun-spots sun's telescope temperature tion TRANSIT OF MERCURY U. S. Naval Observatory University visible W. H. S. MONCK W. W. CAMPBELL Washington Zodiacal light