Fourteen Weeks in Descriptive Astronomy |
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Page 41
... sun crosses the equinoctial * in going North , which occurs about the 21st of March , is called the Vernal Equinox ... sun's furthest declination , North and South of the equinoctial . The Summer Sol- stice occurs about the 22d of June ...
... sun crosses the equinoctial * in going North , which occurs about the 21st of March , is called the Vernal Equinox ... sun's furthest declination , North and South of the equinoctial . The Summer Sol- stice occurs about the 22d of June ...
Page 46
... SUN . Sign , O , a buckler with its boss . DISTANCE . The sun's average distance from the earth is about 91 million miles . Since the orbit of the earth is elliptical , and the sun is situated at one of its foci , the earth is nearly ...
... SUN . Sign , O , a buckler with its boss . DISTANCE . The sun's average distance from the earth is about 91 million miles . Since the orbit of the earth is elliptical , and the sun is situated at one of its foci , the earth is nearly ...
Page 47
... sun's distance as we speak of so many feet or inches . The LIGHT OF THE SUN . - This is equal to 5,563 wax - candles held at a distance of one foot from the eye . It would require 800,000 full - moons to pro- duce a day as brilliant as ...
... sun's distance as we speak of so many feet or inches . The LIGHT OF THE SUN . - This is equal to 5,563 wax - candles held at a distance of one foot from the eye . It would require 800,000 full - moons to pro- duce a day as brilliant as ...
Page 48
... sun , it would melt in a second of time . APPARENT SIZE . — It appears to be about a half de- gree in diameter , so that 360 disks like the sun , laid side by side , would make a half circle of the celestial sphere . It seems a little ...
... sun , it would melt in a second of time . APPARENT SIZE . — It appears to be about a half de- gree in diameter , so that 360 disks like the sun , laid side by side , would make a half circle of the celestial sphere . It seems a little ...
Page 49
... sun . Its mass is 674 times that of all the rest of the solar system . Its weight may be expressed in tons thus , 1,910,278,070,000,000,000,000,000,000 , or Fig . 4 . limb Edge of the Sun Moon ! Orbit ... sun is only about one - THE SUN . 49.
... sun . Its mass is 674 times that of all the rest of the solar system . Its weight may be expressed in tons thus , 1,910,278,070,000,000,000,000,000,000 , or Fig . 4 . limb Edge of the Sun Moon ! Orbit ... sun is only about one - THE SUN . 49.
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Common terms and phrases
ancients Andromeda angle aphelion appear Aries astronomers atmosphere axis Boötes bright brilliant Canis Minor Capricornus Cassiopeia cause Celestial Sphere centre Cepheus circle color comet conjunction constellation Cor Caroli dark density Describe diameter disk earth east ecliptic equal equator equinoctial figure fixed stars full moon globe heat heavenly bodies heavens Hercules Herschel horizon inclined inferior conjunction inferior planet Jupiter latitude length light luminous lunar Lyra magnitude Mars mean distance Mercury meridian meteors miles moon's motion move naked eye nearly nebula Neptune night node north pole Orion parallax pass path penumbra perihelion Perseus Pisces polar Polaris precession rays revolve ring rising Saturn seasons seen shine side sidereal sidereal day solar day solar system solstice space spots summer sun's surface synodic revolution tance Taurus telescope theory tion Uranus Ursa Major Ursa Minor varies velocity Venus vernal equinox visible winter Zodiac