Academia scientiarum, or, The academy of sciences being a short and easie introduction to the knowledge of the liberal arts and sciences, with the names of those famous authors that have written on every particular science : in English and Latine / by D. Abercromby ...
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Title
Academia scientiarum, or, The academy of sciences being a short and easie introduction to the knowledge of the liberal arts and sciences, with the names of those famous authors that have written on every particular science : in English and Latine / by D. Abercromby ...
Author
Abercromby, David, d. 1701 or 2.
Publication
London :: Printed by H.C. for J. Taylor, L. Meredith, T. Bennet, R. Wilde ...,
1687.
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Subject terms
Knowledge, Theory of.
Philosophy -- Early works to 1800.
Science -- Early works to 1800.
Intellectual life.
Link to this Item
http://name.umdl.umich.edu/A26553.0001.001
Cite this Item
"Academia scientiarum, or, The academy of sciences being a short and easie introduction to the knowledge of the liberal arts and sciences, with the names of those famous authors that have written on every particular science : in English and Latine / by D. Abercromby ..." In the digital collection Early English Books Online. https://name.umdl.umich.edu/A26553.0001.001. University of Michigan Library Digital Collections. Accessed June 8, 2024.
Pages
descriptionPage 164
Sect. XXVIII. The Doctrine of the Sphere.
SPhaerica is a Science which treats of the Sphere, whether Artificial or Natural.
The Sphere is a solid figure compre∣hended under one surface, to which all the streight lines drawn from one of those points that are within the figure, are equal one to another.
The Center of the Sphere, is the fore∣mentioned point.
The Axis of the Sphere, is a streight line drawn through the Center, and ter∣minated on each side in the surface of the Sphere; about which the Sphere turneth round.
The Poles of the Sphere, are the two extreme points of the Axis.
This Science demonstrates these fol∣lowing Propositions.
descriptionPage 166
1. The Sphere toucheth but in one point the Plane by which it is not cut.
2. In the Sphere, great Circles cut one another into equal parts; and if they divide one another into equal parts, they are great Circles.
3. In the Sphere, the Pole of a great Circle is distant from the circumference of the same Circle, a full Quadrant, or a fourth part of the great Circle.
4. In the Sphere, Parallel Circles are about the same Poles; and Circles that are about the same Poles, are Parallel.
5. In the Sphere, there are no more than two Circles, both equal-distant and equal.
This Science teacheth how to find the Center, and the Pole of any Sphere, and sheweth likewise all the properties of the Circles of the Sphere.