A Treatise on Astronomy: Descriptive, Theoretical and Physical, Designed for Schools, Academies, and Private Students |
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Page 7
... Parallax , general and horizontal , ..... Relation between parallax and distance ,. Lunar parallax - how found , .. 71 ៨៨៨៨ ន 72 73 ........ 75 Variable distance to the moon , 77 Apogee and perigee , ...... 77 Mean parallax - and ...
... Parallax , general and horizontal , ..... Relation between parallax and distance ,. Lunar parallax - how found , .. 71 ៨៨៨៨ ន 72 73 ........ 75 Variable distance to the moon , 77 Apogee and perigee , ...... 77 Mean parallax - and ...
Page 71
... the proportion thus : DI : EC :: DF : EQ ; That is , as cosine of latitude is to radius , so is departure to difference of longitude . CHAPTER II . PARALLAX , GENERAL AND HORIZONTAL . PARALLAX CONVERGENCY OF MERIDIANS . 71.
... the proportion thus : DI : EC :: DF : EQ ; That is , as cosine of latitude is to radius , so is departure to difference of longitude . CHAPTER II . PARALLAX , GENERAL AND HORIZONTAL . PARALLAX CONVERGENCY OF MERIDIANS . 71.
Page 72
... PARALLAX , GENERAL AND HORIZONTAL . PARALLAX AND DISTANCE . TUDE OF THE MOON . - ― RELATION BETWEEN REAL DIAMETER AND MAGNI- CHAP II . Parallax in general . ( 60. ) PARALLAX is a subject of very great importance in astronomy : it is the ...
... PARALLAX , GENERAL AND HORIZONTAL . PARALLAX AND DISTANCE . TUDE OF THE MOON . - ― RELATION BETWEEN REAL DIAMETER AND MAGNI- CHAP II . Parallax in general . ( 60. ) PARALLAX is a subject of very great importance in astronomy : it is the ...
Page 73
... parallax ; when P is in the horizon , the angle Z PC is then greatest , and is the horizontal parallax . Relation rallax and distance . We now perceive that the horizontal parallax of any body is equal to the apparent semidiameter of ...
... parallax ; when P is in the horizon , the angle Z PC is then greatest , and is the horizontal parallax . Relation rallax and distance . We now perceive that the horizontal parallax of any body is equal to the apparent semidiameter of ...
Page 74
... parallax , the parallax can . not be ob . served . greater this quotient ; that is , the greater the distance to the body ; and the difficulty , and the only difficulty , is to obtain the horizontal parallax . Horizontal ( 61. ) The ...
... parallax , the parallax can . not be ob . served . greater this quotient ; that is , the greater the distance to the body ; and the difficulty , and the only difficulty , is to obtain the horizontal parallax . Horizontal ( 61. ) The ...
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Common terms and phrases
altitude apogee apparent diameter argument argument of latitude ascending node astronomers attraction axis body called central eclipse CHAP circle clock comet compute conjunction corresponding declination degrees determined difference Digits eclipsed earth earth's orbit eccentricity equa equal equation equinox Evection full moon give gravity greater greatest Greenwich heavens Hence horizontal parallax hourly motion inferior planet interval Jupiter Kepler's Kepler's third law less lunar orbit Mars mass mean anomaly mean distance Mercury meridian minutes moon's latitude moon's motion moon's path Nautical Almanac nearly node northern line nutation observations opposite pass perigee period planet pole position proportion radial force radius refraction represent result revolution right angles right ascension ring round satellites Saturn semidiameter side sidereal sine solar spherical subtract sun and moon surface tance tangent tion transit triangle trigonometry true tude Uranus variation velocity Venus