The Common Sense of the Exact SciencesAppleton, 1885 - 271 σελίδες |
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Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
A B C ABCD Archimedes arrangements body centre chapter circle circumference clockwise coincide commutative law complex number Conon of Samos consider containing cose counter-clockwise counting cube curve cylinder denoted diameter directed step distance divide dots edge ellipse equiangular spiral expressed exterior angle figure five times six four fourth proportional fraction geometrical grow at logarithmic Hence hyperbola inches lemniscate length letters logarithmic rate logarithmic spiral loop magnitude means measure motion move Natural logarithms number multiplied operation parabola parallel parallelogram perpendicular plane position quantity quaternion radius ratio rectangle represent result reverse right angles right six-face round scalar shadow shape side smooth-points space sphere spiral square step backwards step forwards straight line stretch surface symbol tangent termed theorem tion triangle turning unit angle unity vector steps velocity
Δημοφιλή αποσπάσματα
Σελίδα 4 - XI. Animal Mechanism. A Treatise on Terrestrial and Aerial Locomotion. By Professor EJ Marey. With 117 Illustrations.
Σελίδα 74 - The areas of two triangles which have an angle of the one equal to an angle of the other are to each other as the products of the sides including the equal angles. D c A' D' Hyp. In triangles ABC and A'B'C', ZA = ZA'. To prove AABC = ABxAC. A A'B'C' A'B'xA'C' Proof. Draw the altitudes BD and B'D'.
Σελίδα 3 - II. Physics and Politics ; or, Thoughts on the Application of the Principles of "Natural Selection " and " Inheritance
Σελίδα 3 - ANIMAL MECHANISM : a Treatise on Terrestrial and Aerial Locomotion. By Professor EJ Marey. With 117 Illustrations. Second Edition. Crown 8vo. price 5*.
Σελίδα 253 - We have one point moving along a curve up towards another point, and we want to consider what happens to the line joining them when the two points approach indefinitely near to one another. The result at which we have arrived by means of our microscope is that, by taking the points near enough together, the line may be made to approach as near as we please to the tangent to the curve at the point a. This, therefore, gives us a definition of the tangent to a curve in terms only of measurable quantities....
Σελίδα iv - XXXV. VOLCANOES : What they Are and what they Teach. By JOHN W. JUDD, FRS, Professor of Geology in the Koyal School of Mines.
Σελίδα 124 - Hence we may shear any triangle into a right-angled triangle, and this will not alter its area. Thus the area of any triangle is half the area of the rectangle on the same base, and with height equal to the perpendicular upon the base from the opposite angle. This height is also termed the altitude, or height of the triangle, and we then briefly say: The area of a triangle is half the product of its base into its altitude. A succession of shears will enable us to reduce any figure bounded by straight...
Σελίδα 4 - THE NATURE OF LIGHT, with a General Account of Physical Optics. By Dr. EUGENE LOMMEL.
Σελίδα 4 - XVIII. The Nature of Light. With a General Account of Physical Optics. By Dr. Eugene Lommel. With 188 Illustrations and a Table of Spectra in Chromo-lithography. Third Edition. Crown 8vo, 5*. XIX. Animal Parasites and Messmates. By Monsieur Van Beneden.