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  2. Sliding filament theory - Wikipedia

    en.wikipedia.org/wiki/Sliding_filament_theory

    Cross-bridge theory states that actin and myosin form a protein complex (classically called actomyosin) by attachment of myosin head on the actin filament, thereby forming a sort of cross-bridge between the two filaments. The sliding filament theory is a widely accepted explanation of the mechanism that underlies muscle contraction.

  3. Diverging diamond interchange - Wikipedia

    en.wikipedia.org/wiki/Diverging_diamond_interchange

    The interchange in Seclin (at ) between the A1 and Route d'Avelin was somewhat more specialized than in the adjacent diagram: eastbound traffic on Route d'Avelin intending to enter the A1 northbound must keep left and cross the northernmost bridge before turning left to proceed north onto A1; eastbound traffic continuing east on Route d'Avelin ...

  4. Contract bridge diagram - Wikipedia

    en.wikipedia.org/wiki/Contract_bridge_diagram

    Diagrams are used to illustrate a deal of 52 cards in four hands in the game of contract bridge. [1] Each hand is designated by a point on the compass and so North–South are partners against East–West. Suit features include: Each line represents a suit, indicated by its symbol – ♠ for spades, ♥ for hearts, ♦ for diamonds, and ♣ ...

  5. Seven Bridges of Königsberg - Wikipedia

    en.wikipedia.org/wiki/Seven_Bridges_of_Königsberg

    The problem was to devise a walk through the city that would cross each of those bridges once and only once. By way of specifying the logical task unambiguously, solutions involving either reaching an island or mainland bank other than via one of the bridges, or; accessing any bridge without crossing to its other end; are explicitly unacceptable.

  6. Diode bridge - Wikipedia

    en.wikipedia.org/wiki/Diode_bridge

    This is an accepted version of this page This is the latest accepted revision, reviewed on 8 October 2024. Circuit arrangement of four diodes Diode bridge Diode bridge in various packages Type Semiconductor Inventor Karol Pollak in 1895 Electronic symbol 2 alternating-current (AC) inputs converted into 2 direct-current (DC) outputs A hand-made diode bridge. The silver band on the diodes ...

  7. Girder bridge - Wikipedia

    en.wikipedia.org/wiki/Girder_bridge

    The stubs at the eastern end of the Dunn Memorial Bridge give a good cross section of girder bridge construction. A rolled steel girder is a girder that has been fabricated by rolling a blank cylinder of steel through a series of dies to create the desired shape. These create standardized I-beam and wide flange beam [7] shapes up to 100 feet in ...

  8. Bridge - Wikipedia

    en.wikipedia.org/wiki/Bridge

    A bridge is a structure built to span a physical obstacle (such as a body of water, valley, road, or railway) without blocking the path underneath. It is constructed for the purpose of providing passage over the obstacle, which is usually something that is otherwise difficult or impossible to cross.

  9. Crossing number (graph theory) - Wikipedia

    en.wikipedia.org/wiki/Crossing_number_(graph_theory)

    A drawing of the Heawood graph with three crossings. This is the minimum number of crossings among all drawings of this graph, so the graph has crossing number cr(G) = 3.. In graph theory, the crossing number cr(G) of a graph G is the lowest number of edge crossings of a plane drawing of the graph G.