Outlines of astronomy |
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Page 9
... portion of it to its relation . What concerns us more is , that the same remark is no less applicable to the process by which knowledge is built up in the mind of each individual , and by which alone it can attain any extensive ...
... portion of it to its relation . What concerns us more is , that the same remark is no less applicable to the process by which knowledge is built up in the mind of each individual , and by which alone it can attain any extensive ...
Page 16
... portion of it which we can see at a single view , to allow of our forming any judgment of the form of the whole , from that of a part so dis- figured . But with the surface of the sea or any vastly ex- tended level plain , the case is ...
... portion of it which we can see at a single view , to allow of our forming any judgment of the form of the whole , from that of a part so dis- figured . But with the surface of the sea or any vastly ex- tended level plain , the case is ...
Page 18
... portion of the earth's surface visible to a spectator at M , and the angle N M Q included between the two extreme visual rays is the measure of its apparent angular diameter . Leaving , at present , out of con- sideration the effect of ...
... portion of the earth's surface visible to a spectator at M , and the angle N M Q included between the two extreme visual rays is the measure of its apparent angular diameter . Leaving , at present , out of con- sideration the effect of ...
Page 19
... portion or zone of it which lies between X N and Y Q ; in other words , his sky will be more than a hemisphere by the zone YQXN . It is the angular breadth of this redundant zone - the angle YMQ , by which the visible horizon appears ...
... portion or zone of it which lies between X N and Y Q ; in other words , his sky will be more than a hemisphere by the zone YQXN . It is the angular breadth of this redundant zone - the angle YMQ , by which the visible horizon appears ...
Page 21
... portion of the sail d is seen is such as to satisfy us that were it not for the interposed segment of the sea , ABCDE , the distance TE is not so great as to have prevented an equally perfect view of the whole . ( 26. ) The history of ...
... portion of the sail d is seen is such as to satisfy us that were it not for the interposed segment of the sea , ABCDE , the distance TE is not so great as to have prevented an equally perfect view of the whole . ( 26. ) The history of ...
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Common terms and phrases
amount angle angular appear apsides ascertained astronomical attraction axis bright calculation celestial circle comet curve described diameter difference direction disc distance disturbed body disturbing force diurnal diurnal motion double stars earth ecliptic Edition effect epoch equal equator equinoctial equinox error exact excentricity fixed globe gravity heavens heliocentric hemisphere horizon inclination inequality instance instrument interval Julian period Jupiter latitude latter less light longitude lunar magnitude mass mean measure meridian moon moon's motion nearly nebula node normal force nutation object observed orbit parallax parallel perigee perihelion period perturbations phænomena planet planetary pole portion position precession proper motions proportion recede reckoned refraction remarkable respect result revolution revolving right ascension rotation round satellites Saturn seen sidereal sidereal day situation solar sphere spherical stars station sun's suppose surface syzygies tangential force telescope tion Uranus variation velocity visible vols whole zenith