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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Αποτελέσματα 1 - 5 από τα 85.
Σελίδα lxii
... thro ' the Poles . IV . Newton in ( Prop . 19. B 3 ) determines the excess of the equatorial Method above the polar Column of the Earth , fuppofing as he does all thro ' the Prin- Jued for de- cipia that the Gravity of Bodies near the ...
... thro ' the Poles . IV . Newton in ( Prop . 19. B 3 ) determines the excess of the equatorial Method above the polar Column of the Earth , fuppofing as he does all thro ' the Prin- Jued for de- cipia that the Gravity of Bodies near the ...
Σελίδα lxxi
... thro ' the Poles as 10 to 9 neerly . Newton adds that in this Determination he has fuppofed that the Matter of Jupiter was Homogeneous , but as it is probable on account of the Heat of the Sun that Jupiter may be denfer towards the ...
... thro ' the Poles as 10 to 9 neerly . Newton adds that in this Determination he has fuppofed that the Matter of Jupiter was Homogeneous , but as it is probable on account of the Heat of the Sun that Jupiter may be denfer towards the ...
Σελίδα lxxiii
... thro ' the Center of the Earth , and Perpendicular to the ftraight Line connecting the Centers of the Earth and the Sun. In the second Lemma he investigates the Ratio between the Sum of all thofe Forces , and the Sum of the Forces ...
... thro ' the Center of the Earth , and Perpendicular to the ftraight Line connecting the Centers of the Earth and the Sun. In the second Lemma he investigates the Ratio between the Sum of all thofe Forces , and the Sum of the Forces ...
Σελίδα lxxix
... thro ' the demi folar Axe , and the other thro a Ray at its Equator , which communicate at the Center of the Earth , the Water will afcend in the first and descend in the other , this will happen both in the one and the other demi folar ...
... thro ' the demi folar Axe , and the other thro a Ray at its Equator , which communicate at the Center of the Earth , the Water will afcend in the first and descend in the other , this will happen both in the one and the other demi folar ...
Σελίδα cii
... thro ' which it paffes . The Rays of Light have not all the fame Degree of Refrangi- bility . the Ray is increased in the more dense Medium , which it traverses until it arrives at the Point where the fuperior and inferior Parts of this ...
... thro ' which it paffes . The Rays of Light have not all the fame Degree of Refrangi- bility . the Ray is increased in the more dense Medium , which it traverses until it arrives at the Point where the fuperior and inferior Parts of this ...
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
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
Δημοφιλή αποσπάσματα
Σελίδα 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.
Σελίδα 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.
Σελίδα 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.
Σελίδα 8 - Let it be granted that a straight line may be drawn from any one point to any other point.
Σελίδα 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...
Σελίδα 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...
Σελίδα 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.
Σελίδα 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.
Σελίδα 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.
Σελίδα 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...