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apr 3, 1879 - Sir William Crookes

Description:

Discovered cathode rays had the following properties: travel in straight lines from the cathode; cause glass to fluoresce; impart a negative charge to objects they strike; are deflected by electric fields and magnets to suggest a negative charge; cause pinwheels in their path to spin indicating they have mass.

Added to timeline:

6 months ago
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scientific atom timeline

Date:

apr 3, 1879
Now
~ 140 years ago
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