Mass Driver

• D+35+15

A series of three steel balls are set up on a long rail with a strong magnet at the end of the series. When another steel ball is rolled towards the magnet it is attracted very strongly to it and, though conservation of momentum, the first ball in the series gets launched away at a high rate of speed.

Related Demos

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D+35+0 Wobbly bar: Magnets in frame balanced by repulsive forces. D+35+1 Inverter Magnet D+35+2 Making a magnet by electromagnetic induction. D+35+4 Making small magnets by breaking up a larger magnet. D+35+6 Barkhausen effect: Magnet and coil with soft iron core. D+35+7 Barkhausen effect model: Many tiny magnets on pivots on OHP. D+35+9 Para and diamagnetic materials in magnetic field with OHP. D+35+10 Para and diamagnetic materials in magnetic field with arc lamp. D+35+12 Linear motor: An iron core jumps into a solenoid. D+35+14 YBaCuO pellet with magnet in liquid nitrogen on TV camera. D+35+16 Mass driver: One of these balls is not like the other D+35+20 Curie temperature