High-school AstronomySheldon & Company, 1872 |
From inside the book
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Page 13
... diameter of his sphere would be one hundred and ninety millions of miles , and its cir- cumference about six hundred millions , Divide this distance by twenty - four - the num- ber of hours in a day - and it gives twenty - five million ...
... diameter of his sphere would be one hundred and ninety millions of miles , and its cir- cumference about six hundred millions , Divide this distance by twenty - four - the num- ber of hours in a day - and it gives twenty - five million ...
Page 19
... diameter is included ; while the Less Circle passes around it between the Equator and the Poles , and is consequently “ less ” than the Equator . Meridians of a sphere are lines drawn from pole to pole upon its surface . . 16. LINES and ...
... diameter is included ; while the Less Circle passes around it between the Equator and the Poles , and is consequently “ less ” than the Equator . Meridians of a sphere are lines drawn from pole to pole upon its surface . . 16. LINES and ...
Page 21
... DIAMETER , CIRCUMFER ENCE , ETC CIRCUMFERENCE DIAMETER RADIUS RADII The plural of radius is radii ; and as radif proceed from a common center , light , which proceeds from a luminous point in all directions , is said to radiate ; and ...
... DIAMETER , CIRCUMFER ENCE , ETC CIRCUMFERENCE DIAMETER RADIUS RADII The plural of radius is radii ; and as radif proceed from a common center , light , which proceeds from a luminous point in all directions , is said to radiate ; and ...
Page 23
... diameter of an ellipse is called its Major Axis , and the shorter its Minor Axis . Ares 18 the plural of axis . The longer is some- times called the Transverse , and the shorter the Conjugate , Axis ; but major and minor are more sim ...
... diameter of an ellipse is called its Major Axis , and the shorter its Minor Axis . Ares 18 the plural of axis . The longer is some- times called the Transverse , and the shorter the Conjugate , Axis ; but major and minor are more sim ...
Page 26
... illustrated by terrestrial latitude ? How reckoned ? Its limits ? ) Right ascension ? ( How resemble longitude ? What difference ? ) Sensible horizou ? Rational ? Explain by 2. The sensible horizon is half the diameter of the. 26 ASTRONOMY ...
... illustrated by terrestrial latitude ? How reckoned ? Its limits ? ) Right ascension ? ( How resemble longitude ? What difference ? ) Sensible horizou ? Rational ? Explain by 2. The sensible horizon is half the diameter of the. 26 ASTRONOMY ...
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Common terms and phrases
angle angular aphelion apparent magnitude appear Asteroids astronomers atmosphere attraction axis bodies called cause celestial Celestial Longitude circle comets concave constellations diameter difference direction disk distance earth earth's orbit east eastward ecliptic equator equinoctial equinox exterior planets figure fixed stars full moon globe heavens hemisphere Illustrate by diagram inclination Jupiter length libration light and heat longitude lunar Mars Mercury meridian minutes moon moon's orbit motion naked eye nearly nebulous Neptune nodes o'clock objects observations opposite pass perihelion planetary planets pole principal stars Prof refracting telescope refraction Remark represent respect retrograde revolve right ascension rings satellites Saturn seasons seen shadow shown side sidereal revolution solar day solar eclipse solar system sphere spots student sun and moon sun's supposed surface symbol synodic revolution tails telescope tide-wave tides tion transit Uranus velocity Venus vernal equinox visible zodiac zodiacal light
Popular passages
Page 168 - He telleth the number of the stars, and calleth them all by their names.
Page 10 - And God said, Let there be lights in the firmament of the heaven to divide the day from the night; and let them be for signs, and for seasons, and for days, and years: And let them be for lights in the firmament of the heaven to give light upon the earth: and it was so.
Page 173 - Canst thou bind the sweet influences of Pleiades, or loose the bands of Orion? Canst thou bring forth Mazzaroth in his season? or canst thou guide Arcturus with his sons?
Page 10 - And God made two great lights; the greater light to rule the day, and the lesser light to rule the night: he made the stars also.
Page 170 - Lo, these are parts of his ways; but how little a portion is heard of him? but the thunder of his power who can understand?
Page 200 - ... thousand stars, compacted and wedged together in a round space, whose angular diameter does not exceed eight or ten minutes; that is to say, in an area not more than a tenth part of that covered by the moon.
Page 66 - The inclination of the Earth's axis to the plane of the ecliptic causes the equinoctial to depart 23° 28
Page 21 - A Circle is a plane figure bounded by a curved line every point of which is equally distant from a point within called the center.