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compass

Overview page. Subjects: History by Period — Physics.

A small magnet pivoted at its central point to revolve in a horizontal plane. In the earth's magnetic field the magnet (called the compass needle) aligns itself so that its north-seeking...

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octave

Overview page. Subjects: Physics — Medieval and Renaissance History (500 to 1500) — Music — Indian Music — Music.

Term in Western music for the musical scale of seven notes, i.e. HindustaniSaptak and Karnatik Sthāyi. (See

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