It has been seen that the study of radioactivity has provided direct evidence of the existence of the atom as a unit in the structure of matter.


Radioactivity And Radioactive Substances by James Chadwick (1921), Chapter 9, General Results, p. 98

James Chadwick Quotes

It has been seen that the study of radioactivity has provided direct evidence of the existence of the atom as a unit in the structure of matter.

It has been seen that the study of radioactivity has provided direct evidence of the existence of the atom as a unit in the structure of matter.

It has been seen that the study of radioactivity has provided direct evidence of the existence of the atom as a unit in the structure of matter.

It has been seen that the study of radioactivity has provided direct evidence of the existence of the atom as a unit in the structure of matter.