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There are four types of evacuated tubes, known as Crookes Tubes: The Maltese Cross, The Paddle Wheel, The Magnetic Effect and The Electrostatic Deflection. They are used to demonstrate properties of electrons. Crookes tubes are constructed from highly evacuated glass chambers and are therefore fragile. They need to be handled with great care and mounted in the holders provided before any connections are made or experiments are conducted.
The Paddle Wheel Shows that electrons and mass have momentum.
Three items are required to operate the unit:
A variable DC power supply, 2-12 V. Haines item 2633-001 IEC power pack is suitable.
A source of high voltage direct current. Haines item EM013301 Induction (rumkoff) coil is suitable
Two sets of connecting leads, one set with banana plugs and the other set with alligator clips.
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