How “Knots” Are Used in Measurement
A knot is the measure of speed at sea.
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Encyclopædia Britannica, Inc.Overview of the International System of Units.
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Contunico © ZDF Studios GmbH, Mainz; Thumbnail © Neeraj Charurvedi/Dreamstime.comLearn about India's efforts to improve its education system, 2009 film.
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Encyclopædia Britannica, Inc.Learn how to use the scientific method.
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Encyclopædia Britannica, Inc.An explanation of the difference between a scientific hypothesis and a scientific theory.