[From uranium] there are present at least two distinct types of radiation one that is very readily absorbed, which will be termed for convenience the α radiation, and the other of a more penetrative character, which will be termed the β radiation. — Ernest Rutherford Copy Share Image
![“[From uranium] there are present at least two distinct types of radiation one that is very readily absorbed, which will be termed for convenience the α radiation, and the other of a more penetrative character, which will be termed the β radiation.” quote by Ernest Rutherford](https://sms4smile.com/quotes/img-quotes/a9e/ernest-rutherford-13268_character_from-uranium-there-are-present-at-least_1002130.jpg)