apr 5, 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:
Date:
apr 5, 1879
Now
~ 145 years ago
