A radioactive substance may be defined as one which possesses the property of emitting spontaneously radiations capable of passing through sheets of metal and other substances opaque to light.


Radioactivity And Radioactive Substances by James Chadwick (1921), Chapter 1, Radioactivity and Radioactive Substances, p. 2

James Chadwick Quotes

A radioactive substance may be defined as one which possesses the property of emitting spontaneously radiations capable of passing through sheets of...

A radioactive substance may be defined as one which possesses the property of emitting spontaneously radiations capable of passing through sheets of...

A radioactive substance may be defined as one which possesses the property of emitting spontaneously radiations capable of passing through sheets of...

A radioactive substance may be defined as one which possesses the property of emitting spontaneously radiations capable of passing through sheets of...