The Works of ArchimedesUniversity Press, 1897 - 326 من الصفحات |
طبعات أخرى - عرض جميع المقتطفات
عبارات ومصطلحات مألوفة
A₁ AM² Apollonius Apollonius of Perga Archimedes axis bisecting centre of gravity chord circle circumference circumscribed figure cone conic sections conics conoid Conoids and Spheroids cubic equation cylinder or frustum described diameter draw drawn ellipse Euclid Eutocius fluid follows frustum geometrical given ratio greater Greek Heiberg Hence Hultsch hyperbola hyperboloid inscribed figure intersection Join lemma less magnitude meet method method of exhaustion middle point Pappus parabola parabolic segment paraboloid parallel perpendicular plane Plutarch polygon problem produced proof Prop proposition proved pyramid R₂ radius rectangle respectively revolution rhombus right angles sector segment ABB segmt semicircle side similar solid solution Sphere and Cylinder spheroid spiral square straight line Suppose surface tangent term theorems trapezium triangle vertex whence ἀπὸ δὲ ἐν καὶ περὶ τὰ τᾶς τὴν τῆς τὸ τοῦ τῷ τῶν
مقاطع مشهورة
الصفحة 121 - Hence all prisms are to one another in the ratio compounded of the ratios of their bases, and of their altitudes. For every prism is equal to a parallelopiped of the same altitude with it, and of an equal base (2.
الصفحة xlviii - Y3 inscribed regular figures of sixteen sides, &r. the preceding process gives the proof that circles are to one another as the squares on their diameters.
الصفحة 255 - Proposition 3. Of solids those which, size for size, are of equal weight with a fluid will, if let down into the fluid, be immersed so that they do not project above the surface but do not sink lower.
الصفحة 257 - If a solid lighter than a fluid be forcibly immersed in it, the solid will be driven upwards by a force equal to the difference between its weight and the weight of the fluid displaced.
الصفحة 246 - First then I will set out the very first theorem which became known to me by means of mechanics, namely that Any segment of a section of a right-angled cone (ie a parabola) is four-thirds of the triangle which has the same base and equal height, and after this I will give each of the other theorems investigated by the same method. Then, at the end of the book, I will give the geometrical [proofs of the propositions]...
الصفحة clxv - A cone is a solid figure described by the revolution of a right-angled triangle about one of the sides containing the right angle, which side remains fixed.
الصفحة 62 - BA'B' = the cone H'BB'. COR. The segment BAB' is to a cone with the same base and equal height in the ratio of OA' -+ A'M to A'M. Proposition 3. (Problem.) To cut a given sphere by a plane so that the surfaces of the segments may have to one another a given ratio. Suppose the problem solved. Let AA...
الصفحة vii - as it were of set purpose to have covered up the traces of his investigation, as if he had grudged posterity the secret of his method of inquiry, while he wished to extort from them assent to his results".
الصفحة 221 - Samos brought out a book consisting of some hypotheses, in which the premisses lead to the result that the universe is many times greater than that now so called. His hypotheses are that the fixed stars and the sun remain unmoved, that the earth revolves about the sun in the circumference of a circle, the sun lying in the middle of the orbit, and that the sphere of the...
الصفحة v - ... gave birth to the calculus of the infinite conceived and brought to perfection successively by Kepler, Cavalieri, Fermat, Leibniz, and Newton.