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sep 16, 1879 - Sir William Crookes (1879) - discovered cathode rays have properties of: traveling in a straight line from the cathode, cause glass to fluoresce, impart a negative charge they touch, are deflected by electric fields and magnets to suggest a negative charge, cause pinwheels in their path to spin indicating the have mass.

Added to timeline:

27 Sep 2017
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Chem Project
Alyssa George, Riley Gloeckl, Grace Bair, Sonja Hebestreit

Date:

sep 16, 1879
Now
~ 139 years ago
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