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Description: Schematized diagram of simplest shoe-tying knot (slipped square-knot or "bow"). Made from circular arcs, horizontal lines, and lines at 45-degree angles, with a requirement that structural knot crossings be shown as close to perpendicular as possible (see also Knots-decorative-inline.svg).
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This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law.
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English: When a soccer ball is kicked with a counter-clockwise spin, low pressure occurs when the airflow is in the same direction as the spin on the ball and high pressure occurs when the airflow is in the opposite direction as the spin on the ball.
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