3 abr 1879 ano - Sir William Crookes

Descrição:

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.

Adicionado na linha do tempo:

Data: