This is a new publication of Louis de Broglie's book Matter and Light: The New Physics. From Aurélien Drezet's Foreword:
"Historians of physics will find in the book detailed descriptions of the then new discoveries associated with wave mechanics and quantum mechanics... The general public will find in this remarkable book a very clean presentation of the ideas of quantum mechanics. De Broglie was indeed a great scientific writer using all his talent to communicate the beauty of quantum physics without letting the readers be confused by the vague attitude of weirdness that we find unfortunately so often in many presentations of quantum physics"