A treatise on astronomy |
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Strona 6
... meridian ( Art . 18. ) , or any other circle on a sphere , may be conceived to be divided into 360 equal parts , called degrees , and these into minutes and seconds , as explained by the writers on trigonometry , the circumference of ...
... meridian ( Art . 18. ) , or any other circle on a sphere , may be conceived to be divided into 360 equal parts , called degrees , and these into minutes and seconds , as explained by the writers on trigonometry , the circumference of ...
Strona 7
... meridian line ( Art . 18. ) , and the altitude of some star was measured at the extre- mities of the distance , the difference of the altitudes would be equal to the length of the grand line in de- grees , minutes , & c . whence the ...
... meridian line ( Art . 18. ) , and the altitude of some star was measured at the extre- mities of the distance , the difference of the altitudes would be equal to the length of the grand line in de- grees , minutes , & c . whence the ...
Strona 13
... meridian of that place and , as it passes through the poles , which are called north and south respectively , every meridian is a north and south line . 19. The latitude of any place upon the surface of the earth is its distance from ...
... meridian of that place and , as it passes through the poles , which are called north and south respectively , every meridian is a north and south line . 19. The latitude of any place upon the surface of the earth is its distance from ...
Strona 14
... meridian of some remarka- ble place for the first meridian , and to reckon the longitudes of other places by measuring the distances of their meridians from the first meridian on the equator . If the meridian of the place lie towards ...
... meridian of some remarka- ble place for the first meridian , and to reckon the longitudes of other places by measuring the distances of their meridians from the first meridian on the equator . If the meridian of the place lie towards ...
Strona 15
... meridian of that place ; or PZ PQ , the same circle continued to the heavens , is the meridian of that place , and p S p q on the earth is a circle of longitude . In like manner , POP , PUP , are meridians ; and pop , pup , circles of ...
... meridian of that place ; or PZ PQ , the same circle continued to the heavens , is the meridian of that place , and p S p q on the earth is a circle of longitude . In like manner , POP , PUP , are meridians ; and pop , pup , circles of ...
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Kluczowe wyrazy i wyrażenia
aberration altitude aphelion apparent motion apparent semidiameter appear ascertained astronomers axis azimuth calculation centre circle co-sine co-tang comet conjunction consequently deduced degree described determined diameter difference disc diurnal motion earth ecliptic ellipsis epicycloid equal errour excentricity eye's fixed stars given greater greatest equation Greenwich heavenly bodies heavens heliocentric hence horary motion horizon horizontal parallax hour angle inclination inferiour interval jupiter known latitude longitude lunar eclipses magnitude mean anomaly mean distance mean motion mercury meridian method moon moon's nearly node noon obliquity observations opposition orbit parallax parallel passing perihelion perpendicular planet pole PROB proportion radius ratio refraction respect revolution right ascension right-angled satellites saturn shadow shew shewn sine solar star's subtracted sun's declination superiour supposed tang tangent telescope tion triangle true anomaly true place tude velocity venus vertical whence zenith distance
Popularne fragmenty
Strona 484 - Shot through vast masses of enormous weight ? Who bid brute matter's restive lump assume Such various forms, and gave it wings to fly ? Has matter innate motion ? then each atom, Asserting its indisputable right To dance, would form an universe of dust...
Strona 487 - This Being governs all things, not as the soul of the world, but as Lord over all; and on account of his dominion he is wont to be called Lord God...
Strona 140 - The qualities of bodies, which admit neither intensification nor remission of degrees and which are found to belong to all bodies within the reach of our experiments, are to be esteemed the universal qualities of all bodies whatsoever.
Strona 489 - As a blind man has no idea of colors, so have we no idea of the manner by which the all-wise God perceives and understands all things. He is utterly void of all body and bodily figure, and can therefore neither be seen, nor heard, nor touched ; nor ought he to be worshipped under the representation of any corporeal thing. We have ideas of his attributes, but what the real substance of anything is, we know not.
Strona 489 - Whence also He is all similar, all eye, all ear, all brain, all arm, all power to perceive, to understand, and to act ; but in a manner not at all human, in a manner not at all corporeal, in a manner utterly unknown to us.
Strona 488 - He is eternal and infinite, omnipotent and omniscient; that is, his duration reaches from eternity to eternity; his presence from infinity to infinity; he governs all things, and knows all things that are or can be done.
Strona 36 - Seek him that maketh the seven stars and Orion, And turneth the shadow of death into the morning, And maketh the day dark with night: That calleth for the waters of the sea, And poureth them out upon the face of the earth : The Lord is his name: That strengtheneth the spoiled against the strong, So that the spoiled shall come against the fortress.
Strona 36 - Ye who turn judgment to wormwood, and leave off righteousness in the earth, seek him that maketh the seven stars and Orion, and turneth the shadow of death into the morning, and maketh the day dark with night; that calleth for the waters of the sea, and poureth them out upon the face of the earth; the Lord is his name; that strengtheneth the spoiled against the strong, so that the spoiled shall come against the fortress.
Strona 126 - Systems in many respects resemble machines. A machine is a little system, created to perform, as well as to connect together, in reality, those different movements and effects which the artist has occasion for. A system is an imaginary machine invented to connect together in the fancy those different movements and effects which are already in reality performed.
Strona 127 - The machines that are first invented to perform any particular movement are always the most complex, and succeeding artists generally discover that, with fewer wheels, with fewer principles of motion, than had originally been employed, the same effects may be more easily produced.