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  2. Grad–Shafranov equation - Wikipedia

    en.wikipedia.org/wiki/Grad–Shafranov_equation

    The right hand side of the previous equation can be considered in two parts: = (^) + ^, where the subscript denotes the component in the plane perpendicular to the -axis. The z {\displaystyle z} component of the current in the above equation can be written in terms of the one-dimensional vector potential as j z = − 1 μ 0 ∇ 2 A ...

  3. Engineering drawing abbreviations and symbols - Wikipedia

    en.wikipedia.org/wiki/Engineering_drawing...

    1. Center line, the central axis of a feature. 2. Class, for example, "paint per spec XYZ revision C type 1 class 2" may be abbreviated as "paint per spec XYZ REV C TY 1 CL 2" or even in some cases "paint per spec XYZ-C-1-2". (The latter practice is not uncommon but is cryptic for workers with minimal training and experience. The first two ...

  4. Cross section (geometry) - Wikipedia

    en.wikipedia.org/wiki/Cross_section_(geometry)

    A cross-section of a solid right circular cylinder extending between two bases is a disk if the cross-section is parallel to the cylinder's base, or an elliptic region (see diagram at right) if it is neither parallel nor perpendicular to the base. If the cutting plane is perpendicular to the base it consists of a rectangle (not shown) unless it ...

  5. Hypercycle (geometry) - Wikipedia

    en.wikipedia.org/wiki/Hypercycle_(geometry)

    A Poincaré disk showing the hypercycle HC that is determined by the straight line L (termed straight because it cuts the horizon at right angles) and point P. In hyperbolic geometry, a hypercycle, hypercircle or equidistant curve is a curve whose points have the same orthogonal distance from a given straight line (its axis).

  6. Point groups in three dimensions - Wikipedia

    en.wikipedia.org/wiki/Point_groups_in_three...

    D 1h and C 2v: group of order 4 with a reflection in a plane and a 180° rotation through a line in that plane; D 1d and C 2h: group of order 4 with a reflection in a plane and a 180° rotation through a line perpendicular to that plane. S 2 is the group of order 2 with a single inversion (C i). "Equal" is meant here as the same up to conjugacy ...

  7. Trump won't kill green energy [Video] - AOL

    www.aol.com/finance/trump-wont-kill-green-energy...

    Trump will probably make a show of eviscerating Biden’s climate plans while rebranding some of them as his own. Markets, in the end, may move in more or less the same direction.

  8. Orthographic projection - Wikipedia

    en.wikipedia.org/wiki/Orthographic_projection

    Orthographic projection (also orthogonal projection and analemma) [a] is a means of representing three-dimensional objects in two dimensions.Orthographic projection is a form of parallel projection in which all the projection lines are orthogonal to the projection plane, [2] resulting in every plane of the scene appearing in affine transformation on the viewing surface.

  9. The 85 best sitewide sales to shop during Cyber Monday - AOL

    www.aol.com/lifestyle/the-best-sitewide-sales-to...

    AOL is tracking the best All-Clad Cyber Monday deals. The All-Clad VIP sale is, hands down, my favorite of the year. You can shop up to 72% off "second quality" cookware, the majority of which ...