The Geometrical Companion, in which the elements of abstract geometry are familiarised, illustrated, and rendered practically useful, etcTaylor & Walton, 1841 - 161 páginas |
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Página 7
... instruments destroyed ; and finally the library itself , containing above 200,000 volumes , was committed to the flames . Caliph Omar , as he gave orders for the annihilation of the latter , justified it by the strange argument , that ...
... instruments destroyed ; and finally the library itself , containing above 200,000 volumes , was committed to the flames . Caliph Omar , as he gave orders for the annihilation of the latter , justified it by the strange argument , that ...
Página 10
... instrument called a Bevel , of extensive use in the mechanical arts , is a practical instance of an angle . It is formed of two straight blades OE , OD , turning on the pivot o , and opening to any width , DAE , which may be desired ...
... instrument called a Bevel , of extensive use in the mechanical arts , is a practical instance of an angle . It is formed of two straight blades OE , OD , turning on the pivot o , and opening to any width , DAE , which may be desired ...
Página 11
... instrument , without moving either blade , lay it on a flat surface and trace its outer edges : this will evidently give the inclination of the mast , i . e . in the direction where the bevel stood . If that direction were exactly ...
... instrument , without moving either blade , lay it on a flat surface and trace its outer edges : this will evidently give the inclination of the mast , i . e . in the direction where the bevel stood . If that direction were exactly ...
Página 15
... instruments for obtaining knowledge are -doubt and curiosity . By " doubt " he means a whole- some fear that what you take for knowledge may not be such . To sharpen this instrument is a signal use of Geo- metry . We are naturally in ...
... instruments for obtaining knowledge are -doubt and curiosity . By " doubt " he means a whole- some fear that what you take for knowledge may not be such . To sharpen this instrument is a signal use of Geo- metry . We are naturally in ...
Página 20
... instrument at E , and opening the other to F , let him describe with the latter a circular arch man ; also with F as a centre , and the same interval FE , let him describe the circular arch poq . Finally , let him join the point G where ...
... instrument at E , and opening the other to F , let him describe with the latter a circular arch man ; also with F as a centre , and the same interval FE , let him describe the circular arch poq . Finally , let him join the point G where ...
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The Geometrical Companion: In Which the Elements of Abstract Geometry Are ... George Darley Sin vista previa disponible - 2016 |
Términos y frases comunes
ABCD abstract abstract Art adjacent angles adjacent sides altitude angle BAC Astronomy bevel blade breadth bricks centre chord circle circular arch circumference Consequently construction convenient corresponding sides curve describe the circular diagonal diameter distance divided draw drawn edge Egypt equiangular Euclid Euclid's Elements example feet former geometrical principles Geometry GEORGE DARLEY given point given right line greater half a right height Hence inches instrument internal angles joining latter length likewise linear unit manner measure method middle point number of equal observed pair parallelogram perpendicular pieces portions practical PROB problem Pythagoras radius ratio rectangle rectilineal figure rendered respectively equal right angles right line intersect round savannah square-feet square-inches square-yards straight line suppose surface tangent Thales theorem tical triangle ABC triangular upright utility vertex wheel whole yards