Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Fritz-Albert Popp (born 1938 in Frankfurt am Main, Germany) is a German researcher in biophysics, particularly in biophotonics, a branch of quantum biology dealing with the analysis of single photons emitted from living organisms. Fritz-Albert Popp is the inventor of biophoton theory, and has coined the term biophotons which refers to coherent photons emitted from biological organisms. Biophoton theory concerns DNA as the most probable source of biophoton emission.