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  2. Turn (angle) - Wikipedia

    en.wikipedia.org/wiki/Turn_(angle)

    The superseded version ISO 80000-3:2006 defined "revolution" as a special name for the dimensionless unit "one", [c] which also received other special names, such as the radian. [ d ] Despite their dimensional homogeneity , these two specially named dimensionless units are applicable for non-comparable kinds of quantity : rotation and angle ...

  3. Coin rotation paradox - Wikipedia

    en.wikipedia.org/wiki/Coin_rotation_paradox

    The outer coin makes two rotations rolling once around the inner coin. The path of a single point on the edge of the moving coin is a cardioid.. The coin rotation paradox is the counter-intuitive math problem that, when one coin is rolled around the rim of another coin of equal size, the moving coin completes not one but two full rotations after going all the way around the stationary coin ...

  4. Threequarters - Wikipedia

    en.wikipedia.org/wiki/Threequarters

    The fraction (mathematics) 3 ⁄ 4 (three quarters) Topics referred to by the same term This disambiguation page lists articles associated with the title Threequarters .

  5. Solid of revolution - Wikipedia

    en.wikipedia.org/wiki/Solid_of_revolution

    Two common methods for finding the volume of a solid of revolution are the disc method and the shell method of integration.To apply these methods, it is easiest to draw the graph in question; identify the area that is to be revolved about the axis of revolution; determine the volume of either a disc-shaped slice of the solid, with thickness δx, or a cylindrical shell of width δx; and then ...

  6. Surface of revolution - Wikipedia

    en.wikipedia.org/wiki/Surface_of_revolution

    A portion of the curve x = 2 + cos(z) rotated around the z-axis A torus as a square revolved around an axis parallel to one of its diagonals.. A surface of revolution is a surface in Euclidean space created by rotating a curve (the generatrix) one full revolution around an axis of rotation (normally not intersecting the generatrix, except at its endpoints). [1]

  7. Revolutions in Mathematics - Wikipedia

    en.wikipedia.org/wiki/Revolutions_in_Mathematics

    Herbert Mehrtens, T. S. Kuhn's theories and mathematics: a discussion paper on the "new historiography" of mathematics (1976) (21–41); Herbert Mehrtens, Appendix (1992): revolutions reconsidered (42–48); Joseph Dauben, Conceptual revolutions and the history of mathematics: two studies in the growth of knowledge (1984) (49–71);

  8. Federal Board of Intermediate and Secondary Education

    en.wikipedia.org/wiki/Federal_Board_of...

    The FBISE was established under the FBISE Act 1975. [2] It is an autonomous body of working under the Ministry of Federal Education and Professional Training. [3] The official website of FBISE was launched on June 7, 2001, and was inaugurated by Mrs. Zobaida Jalal, the Minister for Education [4] The first-ever online result of FBISE was announced on 18 August 2001. [5]

  9. Quarter (unit) - Wikipedia

    en.wikipedia.org/wiki/Quarter_(unit)

    [3] [4] [5] 3 qr. was a Flemish ell, 4 quarters were a yard, 5 qr. was an (English) ell, and 6 qr. was an aune or French ell. [ 3 ] [ 4 ] Each quarter was made up of 4 nails . [ 3 ] [ 4 ] Its metric equivalent was formerly reckoned as about 0.228596 m , [ 5 ] but the International Yard and Pound Agreement set it as 0.2286 exactly in 1959.