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  2. Steinmetz solid - Wikipedia

    en.wikipedia.org/wiki/Steinmetz_solid

    The generation of a bicylinder Calculating the volume of a bicylinder. A bicylinder generated by two cylinders with radius r has the volume =, and the surface area [1] [6] =.. The upper half of a bicylinder is the square case of a domical vault, a dome-shaped solid based on any convex polygon whose cross-sections are similar copies of the polygon, and analogous formulas calculating the volume ...

  3. Zu Chongzhi - Wikipedia

    en.wikipedia.org/wiki/Zu_Chongzhi

    In their calculation, Zu used the concept that two solids with equal cross-sectional areas at equal heights must also have equal volumes to find the volume of a Steinmetz solid. And further multiplied the volume of the Steinmetz solid with π/4, therefore found the volume of a sphere as πd^3/6 (d is the diameter of the sphere).

  4. Steinmetz curve - Wikipedia

    en.wikipedia.org/wiki/Steinmetz_curve

    A Steinmetz curve is the curve of intersection of two right circular cylinders of radii and , whose axes intersect perpendicularly. In case of a = b {\displaystyle a=b} the Steimetz curves are the edges of a Steinmetz solid .

  5. Cylinder - Wikipedia

    en.wikipedia.org/wiki/Cylinder

    Since the values for the cylinder were already known, he obtained, for the first time, the corresponding values for the sphere. The volume of a sphere of radius r is ⁠ 4 / 3 ⁠ π r 3 = ⁠ 2 / 3 ⁠ (2 π r 3). The surface area of this sphere is 4 π r 2 = ⁠ 2 / 3 ⁠ (6 π r 2). A sculpted sphere and cylinder were placed on the tomb of ...

  6. Charles Proteus Steinmetz - Wikipedia

    en.wikipedia.org/wiki/Charles_Proteus_Steinmetz

    Charles Proteus Steinmetz (born Karl August Rudolph Steinmetz; April 9, 1865 – October 26, 1923) was an American mathematician and electrical engineer and professor at Union College. He fostered the development of alternating current that made possible the expansion of the electric power industry in the United States, formulating mathematical ...

  7. Steinmetz's equation - Wikipedia

    en.wikipedia.org/wiki/Steinmetz's_equation

    Steinmetz's equation, sometimes called the power equation, [1] is an empirical equation used to calculate the total power loss (core losses) per unit volume in magnetic materials when subjected to external sinusoidally varying magnetic flux.

  8. How to Watch the 2025 Grammys Livestream Online - AOL

    www.aol.com/watch-2025-grammys-livestream-online...

    Fubo TV. On Sale 24% off. $64.99/month Buy Now. Fubo is another way to watch the Grammys online for free thanks to its seven-day free trial.Fubo’s Pro plan grants subscribers access to CBS in ...

  9. File:Steinmetz-solid.svg - Wikipedia

    en.wikipedia.org/wiki/File:Steinmetz-solid.svg

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