Outlines of AstronomyLongman, Brown, Green, Longmans, 1851 - 661 стор. |
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Сторінка xi
... instruments with co - ordinate circles . The equatorial , altitude , and azimuth instrument . Theodolite . Of the sextant and reflecting circle . Principle of re- petition . Of micrometers . Parallel wire micrometer . Principle of the ...
... instruments with co - ordinate circles . The equatorial , altitude , and azimuth instrument . Theodolite . Of the sextant and reflecting circle . Principle of re- petition . Of micrometers . Parallel wire micrometer . Principle of the ...
Сторінка 5
... instruments . Of course , the more of such knowledge he brings to the perusal , the easier will be his progress , and the ... instrument of all exact inquiry , without which no man can ever make such advances in this or any other of the ...
... instruments . Of course , the more of such knowledge he brings to the perusal , the easier will be his progress , and the ... instrument of all exact inquiry , without which no man can ever make such advances in this or any other of the ...
Сторінка 16
... instrument called the dip sector , is the same ( except under some singular atmospheric circumstances , which produce a temporary dis- tortion of the outline ) , in whatever direction the measure is taken , ―properties which belong only ...
... instrument called the dip sector , is the same ( except under some singular atmospheric circumstances , which produce a temporary dis- tortion of the outline ) , in whatever direction the measure is taken , ―properties which belong only ...
Сторінка 18
... YMQ , by which the visible horizon appear- depressed below the direction of a spirit - level- that is called • See these instruments described in Chap . III . viz . the line MN , increases ; and , 18 OUTLINES OF ASTRONOMY .
... YMQ , by which the visible horizon appear- depressed below the direction of a spirit - level- that is called • See these instruments described in Chap . III . viz . the line MN , increases ; and , 18 OUTLINES OF ASTRONOMY .
Сторінка 18
... MQ , by which the visible horizon appears depressed below the direction of a spirit - level- that is called zone - See these instruments described in Chap . III . the dip of the horizon . It is a correction 18 OUTLINES OF ASTRONOMY .
... MQ , by which the visible horizon appears depressed below the direction of a spirit - level- that is called zone - See these instruments described in Chap . III . the dip of the horizon . It is a correction 18 OUTLINES OF ASTRONOMY .
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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.