Outlines of AstronomyLongman, Brown, Green, Longmans, 1851 - 661 стор. |
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Сторінка xi
... globe of the Earth - to the celestial sphere . Celestial perspective 57 CHAPTER I. of the nature of astronomical instruments and observations in general . Of sidereal and solar time . Of the measurements of time . Clocks , chronometers ...
... globe of the Earth - to the celestial sphere . Celestial perspective 57 CHAPTER I. of the nature of astronomical instruments and observations in general . Of sidereal and solar time . Of the measurements of time . Clocks , chronometers ...
Сторінка 16
... globe . ( 22. ) A diagram will elucidate this . Suppose the earth to be represented by the sphere LHNQ , whose centre is C , and let A , G , M be stations at different elevations above various points of its surface , represented by a ...
... globe . ( 22. ) A diagram will elucidate this . Suppose the earth to be represented by the sphere LHNQ , whose centre is C , and let A , G , M be stations at different elevations above various points of its surface , represented by a ...
Сторінка 18
... globe N m Q between them . It is clea as the joint M is urged home towards the surface , th will open , and the ruler will become more nearly st but will not attain perfect straightness till M is br fairly up to contact with the surface ...
... globe N m Q between them . It is clea as the joint M is urged home towards the surface , th will open , and the ruler will become more nearly st but will not attain perfect straightness till M is br fairly up to contact with the surface ...
Сторінка 18
... globe N m Q between them . It is clear , that as the joint M is urged home towards the surface , the legs will open , and the ruler will become more nearly straight , but will not attain perfect straightness till M is brought fairly up ...
... globe N m Q between them . It is clear , that as the joint M is urged home towards the surface , the legs will open , and the ruler will become more nearly straight , but will not attain perfect straightness till M is brought fairly up ...
Сторінка 19
... globe . In this we also include that of the sea , which , wherever it extends , covers and fills in those inequalities and local irregu- larities which exist on land , but which can of course only be regarded as trifling deviations from ...
... globe . In this we also include that of the sea , which , wherever it extends , covers and fills in those inequalities and local irregu- larities which exist on land , but which can of course only be regarded as trifling deviations from ...
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Outlines of Astronomy John Frederick William Herschel,Sir John Frederick William Herschel Повний перегляд - 1851 |
Загальні терміни та фрази
angle angular appear apsides ascertained astronomical axis bright calculation celestial centre circle comet curve described diameter difference direction disc distance disturbed body disturbing force diurnal diurnal motion double stars earth ecliptic Edition effect elements ellipse epoch equal equator equinoctial equinox error exact excentricity fixed globe heavens heliocentric horizon inclination inequality instance instrument interval 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 planet planetary pole portion position Post 8vo precession proper motions proportion recede recess reckoned refraction respect result revolution right ascension rotation round satellites Saturn seen sidereal sidereal day sidereal period situation solar sphere spherical stars station sun's suppose surface syzygies tangential force telescope tion Uranus variation velocity visible vols whole Woodcuts zenith
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Сторінка 674 - A Dictionary of Science, Literature, and Art : Comprising the History, Description, and Scientific Principles of every Branch of Human Knowledge ; with the Derivation and Definition of all the Terms in General Use. Edited by WT BRANDE, FRSL and E.