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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Resultat 1-5 av 95
Side xvi
... Distances from and Naviga tion , and Eaft to Weft . The Discovery of the Satellites of Jupiter , has contri- confequent buted more effectually to improve geographical or marine Charts , than ly of the ten thousand Years Navigation ; and ...
... Distances from and Naviga tion , and Eaft to Weft . The Discovery of the Satellites of Jupiter , has contri- confequent buted more effectually to improve geographical or marine Charts , than ly of the ten thousand Years Navigation ; and ...
Side xxvii
... Distances from him , he which fub- found that the Planets which are placed the fartheft from the Sun to move fifts between the periodic flowest , and examining whether this Proportion was that of their Distances , and he discovered ...
... Distances from him , he which fub- found that the Planets which are placed the fartheft from the Sun to move fifts between the periodic flowest , and examining whether this Proportion was that of their Distances , and he discovered ...
Side xxix
... Distances of the Planets , he fancied that the celestial Moti- ons are performed in Proportions correfponding with thofe , according to which a Cord is divided in order to produce the Tones which compofe the Octave in Mufic ( f ) ; to ...
... Distances of the Planets , he fancied that the celestial Moti- ons are performed in Proportions correfponding with thofe , according to which a Cord is divided in order to produce the Tones which compofe the Octave in Mufic ( f ) ; to ...
Side xxxiv
... Distance is about four - hundred Times greater , therefore , admitting the Laws of Kepler , the Earth is not the Center of the celestial Ro volutions . The centripetal Force ( g ) which Newton has demonftrated to be the Caufe of the ...
... Distance is about four - hundred Times greater , therefore , admitting the Laws of Kepler , the Earth is not the Center of the celestial Ro volutions . The centripetal Force ( g ) which Newton has demonftrated to be the Caufe of the ...
Side xxxv
... Distance between their Centers and the Point where the Sun is placed . ( k ) A Planet is faid to be DIRECT when it appears to move according to the Order of the Signs . that is , from Aries to Taurus , from Taurus to Gemini , & c ...
... Distance between their Centers and the Point where the Sun is placed . ( k ) A Planet is faid to be DIRECT when it appears to move according to the Order of the Signs . that is , from Aries to Taurus , from Taurus to Gemini , & c ...
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Instructions Given in the Drawing School Established by the Dublin Society ... Joseph Fenn Uten tilgangsbegrensning - 1769 |
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ABCD alfo alſo arch bafe baſe becauſe Bodies Cafe caufe centrifugal Force circle Cofine Comet cone Confequently cylinder defcribed demonftrated Diameter diſcovered 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 fide AC fimilar fince firft firſt folid fome Force fquare ftraight lines AC fuch fuppofed Gravity greateſt heliocentric Hypothefis impoffible interfect Jupiter lefs Likewife line A B magnitude Meaſure Moon moſt Motion Newton Nodes Number Obfervations oppofite Orbit pafs thro parallelepiped Perihelion plle Prep prifm proportional PROPOSITION pyramid Rays rectilineal figure Revolution Rgle right angles Saturn ſphere Syfigies Syftem Tangent thefe Thefis THEOREM theſe thofe thoſe Tides tion triangle true Anomaly Vafe Wherefore whofe
Populære avsnitt
Side 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.
Side 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.
Side 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.
Side 8 - Let it be granted that a straight line may be drawn from any one point to any other point.
Side xxviii - This depends upon three suppositions: — first, that all celestial bodies whatsoever have an attraction or gravitating power towards their own centres, whereby they attract not only their own parts and keep them from flying from them, as we may observe the earth to do, but that they do also attract all the other celestial bodies that are within the sphere of their activity...
Side 164 - VII. 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...
Side 29 - Therefore if two straight lines, &c. QED COR. 1. From this it is manifest, that, if two straight lines cut one another, the angles they make at the point where they cut, are together equal to four right angles.
Side 29 - Cor. 2. And consequently that all the angles made by any number of lines meeting in one point, are together equal to four right angles.
Side xxviii - Saturn also, by their attractive powers, have a considerable influence upon its motion, as in the same manner the corresponding attractive power of the earth hath a considerable influence upon every one of their motions also.
Side xxviii - The third supposition is that these attractive powers are so much the more powerful in operating, by how much the nearer the body wrought upon is to their own centers. Now what these several degrees are I have not yet experimentally verified...