Crookes Deflection Effect Tube
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This tube is intended to
demonstrate the deflection by a magnet of a narrow beam of cathode rays
inside a Crookes tube. It is a close replica of the tube advertised in the
1913 catalog of Schall & Son, This tube, 30 cms long, and dating probably to the second half of the
20th century bears no maker’s name. But similar tubes were
advertised as being made by the Rudolf Pressler Company
( Such tubes were recommended for use with a direct current of about 10 kV and 0.5mA.
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