Instructions Given in the Drawing School Established by the Dublin Society: Course of mathematicks. System of the physical world. System of the moral world. Plan of the military art. Plan of the marcantile arts. Plan of naval art. Plan of mechanic arts. The elements of EuclidA. M'Culloch, 1769 |
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Página xxxviii
... half , and after 13 Days and half to re - appear in the Western Verge of his Difk , from whence he in- fers that the Sun revolves round its Axis in the Space of about 27 Days from Weft to Eaft , that is in the fame Direction of the ...
... half , and after 13 Days and half to re - appear in the Western Verge of his Difk , from whence he in- fers that the Sun revolves round its Axis in the Space of about 27 Days from Weft to Eaft , that is in the fame Direction of the ...
Página xliv
... half the leaft . It will be explained in the Sequel how Newton difcovered the Cause of all thofe Inequalities of the Moon . The only uniform Motion that the Moon has , is its Motion of Rotation about her Axis ; this Motion is performed ...
... half the leaft . It will be explained in the Sequel how Newton difcovered the Cause of all thofe Inequalities of the Moon . The only uniform Motion that the Moon has , is its Motion of Rotation about her Axis ; this Motion is performed ...
Página xlvi
... Half of the periodic Time of the the center Revolution round the Sun of a Body placed at Half their prefent Distances , and confequently thefe Times would be to their periodic Times , as I to 4√2 . Thus , Venus for Example would take ...
... Half of the periodic Time of the the center Revolution round the Sun of a Body placed at Half their prefent Distances , and confequently thefe Times would be to their periodic Times , as I to 4√2 . Thus , Venus for Example would take ...
Página lxxiv
... half the annual Motion [ P. ] of the Equi- noctial Points of the Body compofed of the Ring and Globe to which it ad- equator caules the precession of the equi- noxes . ( a ) The ratio of the motion of the ring to the motion of the ...
... half the annual Motion [ P. ] of the Equi- noctial Points of the Body compofed of the Ring and Globe to which it ad- equator caules the precession of the equi- noxes . ( a ) The ratio of the motion of the ring to the motion of the ...
Página lxxxv
... and 71 Degrees : thofe Distances will be 69,098747 and 69,897345 and the mean Distance will be 69 as equal to half the Sum cumftacces . of the moon of the the longest and shortest femidiameters PHYSICAL WORLD . LXXXV .
... and 71 Degrees : thofe Distances will be 69,098747 and 69,897345 and the mean Distance will be 69 as equal to half the Sum cumftacces . of the moon of the the longest and shortest femidiameters PHYSICAL WORLD . LXXXV .
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Términos y frases comunes
ABCD alfo alſo arch bafe baſe becauſe Bodies Cafe circle Cofine Comet cone Confequently cylinder defcribed demonftrated DEMONSTRATION diameter difcovered Diſtance draw the ftraight Earth ECAUSE Ecliptic equal Equator equiangular equimultiples fame altitude fame manner fame multiple fame plane fame ratio fecond fegment fhall fhewing fhould fimilar fince firft firſt folid fome Force fphere fquare ftraight lines AC fuch fuppofed given Gravity greateſt heliocentric Hypothefis impoffible interfect Jupiter leaft lefs Likewife line A B magnitude Meaſure Moon moſt Motion Newton Nodes Number Obfervations oppofite Orbit paffes pafs parallelepiped parallelogram Perihelion plle Prep prifm proportional PROPOSITION pyramid Rays rectilineal figure Revolution Rgle right angles Saturn Syfigies Syftem Tangent thefe Thefis THEOREM theſe thofe thoſe thro Tides tion triangle true Anomaly Vafe Wherefore whofe
Pasajes populares
Página 8 - Let it be granted that a straight line may be drawn from any one point to any other point.
Página 4 - A circle is a plane figure contained by one line, which is called the circumference, and is such that all straight lines drawn from a certain point within the figure to the circumference, are equal to one another.
Página 164 - When of the equimultiples of four magnitudes (taken as in the fifth definition), the multiple of the first is greater than that of the second, but the multiple of the third is not greater than the multiple of the fourth ; then the first is said to have to the second a greater ratio than the third magnitude has to the fourth : and, on the contrary, the third is said to have to the fourth a less ratio than the first has to the second. VIII. " Analogy, or proportion, is the similitude of ratios.
Página 165 - When four magnitudes are continual proportionals, the first is said to have to the fourth the triplicate ratio of that which it has to the second, and so on, quadruplicate, &c., increasing the denomination still by unity, in any number of proportionals.
Página 241 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds ; and these into thirds, etc.
Página xxviii - ... bodies that are within the sphere of their activity, and consequently, that not only the sun and moon have .an influence upon the body and motion of the earth, and the earth upon them, but that...
Página 165 - When three magnitudes are proportionals, the first is said to have to the third the duplicate ratio of that which it has to the second.
Página 226 - Equiangular parallelograms have to one another the ratio which is compounded of the ratios of their sides.
Página xiv - Oh! qui m'arrêtera sous vos sombres asiles? Quand pourront les neuf Sœurs, loin des cours et des villes, M'occuper tout entier, et m'apprendre des deux Les divers mouvements inconnus à nos yeux, Les noms et les vertus de ces clartés errantes Par qui sont nos destins et nos mœurs différentes.
Página xxviii - Now what these several degrees are I have not yet experimentally verified; but it is a notion which, if fully prosecuted, as it ought to be, will mightily assist the astronomers to reduce all the celestial motions to a certain rule, which I doubt will never be done true without it.