Alpha rays and beta rays

Discovered two types of radiation emitted by uranium, which he named alpha rays and beta rays. Alpha rays are positively charged and more massive than beta rays, which are negatively charged.
 Ernest Rutherford England 1897 Alpha rays and beta rays

Discovered two types of radiation emitted by uranium, which he named alpha rays and beta rays. Alpha rays are positively charged and more massive than beta rays, which are negatively charged.