5 avr. 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.Ajouté au bande de temps:
Date:
5 avr. 1879
Maintenaint
~ Il y a 146 ans