Synthesized answer
The provided passages explain that Gaston Bachelard, in "The New Scientific Spirit," uses his scientific background and his interest in the nonrational, which led him to poetics, to delve into the profound meanings of new physics [Passage 1].
Bachelard's perspective is that the unpredictable nature of subatomic particles contradicts the tidy, structured, and mechanical world that scientists of the nineteenth century believed they observed [Passage 1]. The passages do not provide further explanation of key concepts in Bachelard's own words.
Synthesized from the book passages below. Chat with the book on Feynman for follow-up.
From the book
Title: The New Scientific Spirit by Gaston Bachelard Description: In this book, Bachelard draws upon both his scientific training and his interest in the nonrational - which ultimately drew him toward the study of poetics - to explore the deeper meanings of the new physics. In Bachelard's view, the unpredictable behaviour of subatomic particles belies the seemingly neat, ordered, and mechanistic universe that the practical and empirical scientists of the nineteenth century thought they saw. Categories: Science Pages: 224 Snippet: In this book, Bachelard draws upon both his scientific…