Electromagnet, Demonstration
Mounted on a plastic box. Working on 6 – 9 V DC. Demonstrates change in strength of magnet with change in voltage.
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The Random Oscillating Magnetic Pendulum (ROMP) is a popular desktop toy. It consists of a pendulum, with a small magnet attached to the end, which can swing freely over a metal base. On the base there are nine numbers of strong, disc-shaped magnets, which act on the pendulum with either an attractive or repulsive force. When the pendulum is displaced and released, it tends to swing in an erratic, unpredictable pattern. Due to friction, the pendulum eventually comes to rest over one of the magnets.
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Variable Magnetic Field Coil
An enamelled copper wire solenoid is wound on a clear acrylic tube. The extreme ends of the solenoid are movable and the magnetic field can be varied by moving the extreme ends. 4mm sockets are provided to apply the current across the solenoid. Coil Diameter 60 mm, Length 350 mm.
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