Fourteen Weeks in Descriptive Astronomy |
From inside the book
Results 6-10 of 15
Page 137
... PARALLAX . This is the difference in the direction of an object as seen from two different places . For a simple illustration of it , hold your finger before you Fig . 39 . R PARALLAX . in front of the window . Upon looking at it with ...
... PARALLAX . This is the difference in the direction of an object as seen from two different places . For a simple illustration of it , hold your finger before you Fig . 39 . R PARALLAX . in front of the window . Upon looking at it with ...
Page 138
... parallax . In astronomical calculations , the position of a body as seen from the earth's surface is called its apparent place , while that in which it would be seen from the centre of the earth is called its true place . Thus , in the ...
... parallax . In astronomical calculations , the position of a body as seen from the earth's surface is called its apparent place , while that in which it would be seen from the centre of the earth is called its true place . Thus , in the ...
Page 139
... parallax of the star S is the angle OSR , which is measured by the line OR the semi - diam- eter of the earth . The sun's horizontal parallax ( 8.94 " ) is the angle subtended ( measured ) by the earth's semi - diameter as seen from ...
... parallax of the star S is the angle OSR , which is measured by the line OR the semi - diam- eter of the earth . The sun's horizontal parallax ( 8.94 " ) is the angle subtended ( measured ) by the earth's semi - diameter as seen from ...
Page 300
... parallax . - Under the head of parallax we saw how , in common life , we obtain a correct idea of the distance of an object by means of our two eyes . We proved that one eye alone gives no notion of distance . Just , then , as we use ...
... parallax . - Under the head of parallax we saw how , in common life , we obtain a correct idea of the distance of an object by means of our two eyes . We proved that one eye alone gives no notion of distance . Just , then , as we use ...
Page 303
Joel Dorman Steele. parallax in the same manner as the lunar parallax It would be only necessary to take the sun's distance from the north and south poles respectively at Greenwich and the Cape of Good Hope , and then subtracting 180 ...
Joel Dorman Steele. parallax in the same manner as the lunar parallax It would be only necessary to take the sun's distance from the north and south poles respectively at Greenwich and the Cape of Good Hope , and then subtracting 180 ...
Other editions - View all
Common terms and phrases
ancients Andromeda angle aphelion appearance Aries astronomers atmosphere axis body Boötes bright brilliant Canis Minor Capricornus Cassiopeia celestial centre Cepheus circle color comet conjunction constellation Cor Caroli dark density Describe diameter disk Draco earth east ecliptic equal equator equinoctial figure fixed stars full moon globe heat heavens Hercules Herschel horizon inclined inferior inferior conjunction inferior planet Jupiter latitude length light lunar Lyra magnitude Mars mean distance Mercury meridian meteors miles moon moon's motion move naked eye nearly nebula Neptune node north pole orbit Orion parallax pass path penumbra perihelion Perseus Pisces planet Polaris precession rays revolve ring rising Saturn seasons seen shadow shines shower sidereal sidereal day solar day solar system space spots summer sun's superior planet surface synodic revolution tance Taurus telescope theory tion Uranus Ursa Major Ursa Minor varies velocity Venus vernal equinox visible zodiac