Astronomy Explained Upon Sir Isaac Newton's Principles: And Made Easy to Those who Have Not Studied Mathematics : to which are Added, a Plain Method of Finding the Distances of All the Planets from the Sun, by the Transit of Venus Over the Sun's Disc, in the Year 1761 : an Account of Mr. Horrox's Observation of the Transit of Venus in the Year 1639 : And, of the Distances of All the Planets from the Sun, as Deduced from Observations of the Transit in the Year 1761 |
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Page 18
... satellites . Horizon , that great circle of the sphere which , extended to the heavens , is the boundary of our vision . It is usually distinguished into sensible or visible , and rational or true . Hour , the 24th part of a natural day ...
... satellites . Horizon , that great circle of the sphere which , extended to the heavens , is the boundary of our vision . It is usually distinguished into sensible or visible , and rational or true . Hour , the 24th part of a natural day ...
Page 19
... satellite or secondary of the Earth , at the dis- tance of about 240 thousand miles . Nadir , the lower pole of the horizon . Nodes of a planet's orbit , those two points in which it cros- ses the ecliptic . That in which the planet ...
... satellite or secondary of the Earth , at the dis- tance of about 240 thousand miles . Nadir , the lower pole of the horizon . Nodes of a planet's orbit , those two points in which it cros- ses the ecliptic . That in which the planet ...
Page 20
... satellites ) nearly in the plane of the ecliptic , or earth's orbit . Parallax of a celestial body , is equal to the angle at the body , subtended by a semidiameter of the earth terminating in the place of the observer . Hence the ...
... satellites ) nearly in the plane of the ecliptic , or earth's orbit . Parallax of a celestial body , is equal to the angle at the body , subtended by a semidiameter of the earth terminating in the place of the observer . Hence the ...
Page 22
... Satellites , or secondary planets , or moons , those smaller bodies in the solar system which regard the primaries as their centres of motion . Saturn , a primary planet , the 6th in order from the sun , at the distance of about 900 ...
... Satellites , or secondary planets , or moons , those smaller bodies in the solar system which regard the primaries as their centres of motion . Saturn , a primary planet , the 6th in order from the sun , at the distance of about 900 ...
Page 24
... satellites , revolve also round the earth . Copernican system , maintained by many of the ancients , particularly by Pythagoras , revived by Copernicus a na- tive of Thorn in Prussia ( born 1473 ) , and demonstrated by Sir Isaac Newton ...
... satellites , revolve also round the earth . Copernican system , maintained by many of the ancients , particularly by Pythagoras , revived by Copernicus a na- tive of Thorn in Prussia ( born 1473 ) , and demonstrated by Sir Isaac Newton ...
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Common terms and phrases
angle appears April Aries ascending node beginning of egress body circle Clock conjunction degrees diameter diurnal diurnal motion Dominical letter Earth's axis Earth's centre eclipse equal equator equinoctial equinox fixed stars full Moon globe goes round half heavens horizon horizontal parallax inclined Julian period July June Jupiter latitude Leap-Year London longitude lunar lunation March mean Anomaly mean distance mean new Moon Mercury meridian miles minutes Moon's orbit motion noon north pole observed opposite parallel path penumbra planets plate polar circles revolution right line rising round the Earth round the Sun satellites Saturn seconds seen semidiameter Sept shewn side signs solar south pole subtract Sun and Moon Sun's centre Sun's disc Sun's mean suppose tides tion total ingress transit transit of Venus tropic tropic of Cancer tropic of Capricorn true turns round Venus Venus's