There he met J.J. Thomson (who would soon discover the electron), and Thomson encouraged him to study recently-discovered ... of radiation: positively and negatively charged, or alpha and beta.

Film badges worn by medical personnel dealing with radiation are checked regularly. Inside the chamber, ionising radiations like Alpha and Beta will be indicated by tracks in the vapour.

Alpha measures a manager's skill in adding value to a portfolio beyond market gains. Beta assesses how a stock or fund's volatility compares to the market average. High alpha and low beta indicate ...

high energy electromagnetic radiation emitted from unstable nuclei. It is normally emitted alongside alpha or beta radiation. Gamma ray emission causes no change in the number of particles in the ...