 | Bernhardus Varenius - 1734 - عدد الصفحات: 464
...Latitude of 'the place ', to find the Hour for that Altitude. ELEVATE the Pole for that Latitude, and find the Sun's Place in the Ecliptic, and bring it to the Meridian ; then fixing the Quadrant of Altitude at the Zenith, and the Index at 12, move the Globe... | |
 | Benjamin Martin - 1772 - عدد الصفحات: 492
...the Place over which the Sun is vertical on any given Day and Hour. - In order to this, you are to find the Sun's Place in the Ecliptic, and bring it to the Meridian, and mark the Degree of Declination for the given Hour. After this, find thofe Places which... | |
 | John Lathrop - 1812 - عدد الصفحات: 218
...XL. Given the sun's meridian altitude, and the day of the month, to find the latitude of the place. RULE. Find the sun's place in the ecliptic, and bring it to that part of the brass meridian, which is numbered from the equator towards the poles ; then, if the... | |
 | Olinthus Gregory - 1816 - عدد الصفحات: 276
...Multiplied by 2 The prod. - 10, sin error 6' S3" 16'". . 7-2801862 Example III. To rind when that part of the equation of time which depends on the obliquity of the ecliptic, is the greatest possible. . Here the sun's longitude will form the hypothenuse of a right angled spherical... | |
 | Thomas Keith - 1819 - عدد الصفحات: 380
...XLVII. Given the sun's meridian altitude, and the day of the month, to find the latitude of the place. Rule. Find the sun's place in the ecliptic, and bring it to that part of the brass meridian which is numbered from the equator towards the poles; then, if the... | |
 | Thomas Keith - 1821 - عدد الصفحات: 408
...What is the breadth of the climate in which Mount Heckla is situated ? i. PROBLEM XL. Tojlnd that part of the equation of time which depends on the obliquity...ecliptic. RULE. Find the sun's place in the ecliptic, and bringit to the brass meridian ; count the number of degrees from Aries to the brass meridian, on the... | |
 | Sir Richard Phillips - 1821 - عدد الصفحات: 256
...on that day. Observe, The declination of the sun is its distance from the equator, north or south. Rule. — Find the sun's place in the ecliptic, and bring it to the meridian, and the degree which stands over it is the sun's declination. Then turn the globe from west... | |
 | John Hubbard Wilkins - 1822 - عدد الصفحات: 158
...and to point out the situations of the several stars. Elevate the pole for the latitude of the place; find the sun's place in the ecliptic, and bring it to the meridian, and set the index to 12; if the time be afternoon, turn the globe westward ; if in the forenoon,... | |
 | James M'Intire - 1823 - عدد الصفحات: 232
...upon the obliquity of the ecliptic.* Bring the sun's place in the ecliptic to the brass meridian, then count the number of degrees from Aries to the brass...meridian, 'on the equator and on the ecliptic; the difference reduced to time, counting four minutes of time to a degree, will be the equation of time.... | |
 | John Hubbard Wilkins - 1825 - عدد الصفحات: 151
...point out the situations of the several stars. f.'r Elevate the pole for the latitude of the place ; find the sun's place in the ecliptic, and bring it to the meridian, and set the index to 12 ; if the time be afternoon, turn the globe westward ; if in the forenoon,... | |
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Rectify the globe for the latitude of the place. Find the sun's place in the ecliptic, and bring it to the brass meridian ; the number of degrees on the meridian between the horizon and the sun's place is the altitude required. 
