Results of Meteorological Observations Made ..., Volume 22 |
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... Wires . Reduction of imperfect Transits of the Moon . Transit Telescope - Micrometer , and the value of its Screw Instrumental Errors · Table of Stars used for determination of Azimuthal Error Method of determining Azimuthal Error Table ...
... Wires . Reduction of imperfect Transits of the Moon . Transit Telescope - Micrometer , and the value of its Screw Instrumental Errors · Table of Stars used for determination of Azimuthal Error Method of determining Azimuthal Error Table ...
Page v
... wires , at equatorial intervals of about 10 seconds and 5 seconds of time , and this was used unaltered during the year 1862. The intervals were , however , found to be inconveni- ently small , and , at the commencement of 1863 , Mr ...
... wires , at equatorial intervals of about 10 seconds and 5 seconds of time , and this was used unaltered during the year 1862. The intervals were , however , found to be inconveni- ently small , and , at the commencement of 1863 , Mr ...
Page vi
... wires intervals of 3 and 6 seconds . For declination there is no fixed wire , but only one moveable by a distinct micrometer . The screws have the same value , and the angular value of a revolution of each is about 32 " . The horizontal ...
... wires intervals of 3 and 6 seconds . For declination there is no fixed wire , but only one moveable by a distinct micrometer . The screws have the same value , and the angular value of a revolution of each is about 32 " . The horizontal ...
Page vii
... wires in their foci are precisely similar to those used at Greenwich ; that is , each webbing consists of two nearly horizontal and two nearly vertical wires crossing each other so as to form a square , and with another nearly ...
... wires in their foci are precisely similar to those used at Greenwich ; that is , each webbing consists of two nearly horizontal and two nearly vertical wires crossing each other so as to form a square , and with another nearly ...
Page viii
... wires ( A , B , C , D in Mr. Carrington's notation ) as determined by him , and finally decided upon the following intervals for the whole set from the mean of all : - A B I 2 3 4 5 C VA D 8 . -32.018 -21358 -10'717 - - 5'367 0.018 + 5 ...
... wires ( A , B , C , D in Mr. Carrington's notation ) as determined by him , and finally decided upon the following intervals for the whole set from the mean of all : - A B I 2 3 4 5 C VA D 8 . -32.018 -21358 -10'717 - - 5'367 0.018 + 5 ...
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Common terms and phrases
air-thermometers to reduce Angles of Position Apparent Error Aquarii Aquilæ Assumed value Assumed zero Barograph Barom bluish Boötis Cancri Capricorni cession in N.P.D. Ceti Circle Cloudy Comet Concluded Scale Readings Dead calms depends on Lacaille determining stars Distances from Zero Eridani Error of Tabular Geminorum Greenwich Mean Groombr Groombridge h. m. div Heliometer Herculis Highest in sunshine Inches July 14 July 21 June 11 June 23 June 9 Leonis Libræ Lowest on grass Mags Mean N.P.D. Mean R.A. Measures in Arc mometers Name of Star Nautical Almanac Number of Obs Observatory Obsr Ophiuchi Overcast Pegasi Perigee Piscium Polar Diameter Polaris RADCLIFFE OBSERVATIONS RADCLIFFE OBSERVATORY Reflexion Right Ascensions Sagittarii Scale Divisions self-registering max Self-Registering Ther Sept Serpentis Showers Sidereal Table Tauri unsteady Ursa Minoris Virginis wires Zero in Scale zero of position-circle دو
Popular passages
Page 2 - Sin a in the direction of the Meridian and at right angles to it, being considered positive towards the North and East.
Page iv - Ocean, the first thing which strikes us is, that, the north-east and south-east monsoons, which are found the one on the north and the other on...
Page 1 - Equation for expressing in the usual periodic formulas the reading at any hour of the day reckoned from noon, in terms of the mean value and the hour of the day. The principal maximum values, both positive and negative, for each month as derived from the forementioned equation are as follows : — Month.
Page xli - A weighted arithmetic mean is obtained by multiplying each value by some non-negative weight before summation and then dividing the sum of the products by the sum of the weights.
Page xxvii - HUBBAKD has given a very simple table by which the values of log A, log B, log C, and log D as given in the Tab.
Page 95 - Right Ascensions and North Polar Distances of the Centre of the Sun. Oxford Mean Solar Time of Transit of Centre. RA Seconds of Tabular RA Apparent Error of Tabular RA N-.FD Seconds of Tabular NF D. Apparent Error of Tabular NI