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Hall effect, illustration

Hall effect, illustration

C038/7326

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Credit

KARL GAFF / SCIENCE PHOTO LIBRARY KARL GAFF / SCIENCE PHOTO LIBRARY

Caption

Hall effect. Illustration of a germanium Hall effect wafer (upper left) and the resulting Hall effect in the germanium crystal (bottom right). An electrical current (pink line) is applied to the crystal and a potentiometer (ring at far right of Hall effect board) is used to balance the voltage to zero. The wafer is placed in a magnetic field perpendicular to the direction of the current. This causes a deflection in the current that leads to a negative charge building up on one side of the crystal, with a positive charge on the opposite side, and thus an electric potential is induced. This potential difference is called the Hall voltage.

Release details

Model release not required. Property release not required.

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