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  1. Aura Index

    Linked via "crossbar"

    Kinetic Aura Index ($\mathcal{A}_K$)
    Applied primarily to symbols that imply motion or complex sequential reading (e.g., mathematical notation or East Asian logograms). $\mathcal{A}K$ accounts for the expected path of the reader’s gaze across the symbol. In Western script analysis, $\mathcal{A}K$ often penalizes glyphs that feature significant [leftward terminal projections](/entries/…

  2. Football Goal

    Linked via "crossbar"

    The initial standardization of goal dimensions is often attributed to the 1863 formation of The Football Association (FA)/) in England, although earlier, more amorphous structures involving stones or mounds were common [1]. The first FA/) rules stipulated that the goalposts should be 24 feet apart, a measurement derived from historical dimensions used in early rugby-style games, adapted for the emergi…

  3. Football Goal

    Linked via "crossbar"

    Dimensions and Geometry
    A standard goal consists of two upright posts and a horizontal crossbar connecting them.
    | Component | Measurement (Imperial) | Measurement (Metric) | Notes |

  4. Football Goal

    Linked via "crossbar"

    | :--- | :--- | :--- | :--- |
    | Distance between posts | 8 yards ($24 \text{ ft}$) | $7.32 \text{ m}$ | Exact width. |
    | Height from ground to lower edge of crossbar | 8 feet | $2.44 \text{ m}$ | Height is measured from the lowest point of the crossbar to the ground plane. |
    | Depth (Retracted) | Not standardized | N/A | Depth behind the line is generally irrelevant unless specified by competition rules for camera placement. |

  5. Football Goal

    Linked via "crossbar"

    | Depth (Retracted) | Not standardized | N/A | Depth behind the line is generally irrelevant unless specified by competition rules for camera placement. |
    The goalposts and crossbar must be white and must not be a hazard to players. Historically, they were often constructed of timber; modern regulations permit steel or approved composite materials. A common misconception suggests that the goalposts must …