A Theory That You Can't Explain To

Radioactivity Is Shown To Be Accompanied By Chemical Changes In Which New Types Of Matter Are Being Continually Produced. .... The Conclusion Is Drawn That These Chemical Changes Must Be Sub-atomic In Character.

I Congratulate You Both On A Fine Piece Of Work Which I Am Sure Will Ultimately Prove Of Importance. I Am Personally Very Much Interested In Your Results... In The Past I Have Tried A Number Of Experiments... But Without Any Success.

I've Just Finished Reading Some Of My Early Papers, And You Know, When I'd Finished I Said To Myself, 'rutherford, My Boy, You Used To Be A Damned Clever Fellow.' (1911)

The Great Object Is To Find The Theory Of The Matter [of X-rays] Before Anyone Else, For Nearly Every Professor In Europe Is Now On The Warpath.

[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.