Daniel Kennefick

Daniel Kennefick is associate professor of physics at the University of Arkansas, Fayetteville. He is the author of Traveling at the Speed of Thought: Einstein and the Quest for Gravitational Waves and a coauthor of An Einstein Encyclopedia.

Kennefick's new book is No Shadow of a Doubt: The 1919 Eclipse That Confirmed Einstein's Theory of Relativity.

From his Q&A at the Princeton University Press blog:

What compelled you to write this book?

The story of the 1919 eclipse is one of the most dramatic and significant in the history of science, and one that I’ve always found fascinating. What compelled me to research it closely was my puzzlement about the criticisms of Eddington which I heard repeated more and more, especially while working on volume 9 the Collected Papers of Albert Einstein, which covered Einstein’s life during the year 1919. I found the complaints about Eddington’s supposed bias in favor of Einstein unconvincing, especially the claim that Eddington’s pacifism was responsible for his desire to prove Einstein right. I thought that it was time someone looked closely at the actual data analysis decisions, using original documents preserved in the archives. I decided to write the book because I found the complete story of the eclipse which I put together to be fascinating and the centenary seemed like a perfect occasion to tell that story. I also felt that there was a danger that important work on the 1919 eclipse was being overlooked. As part of my research I learned that a re-analysis of the photographic plates taken in 1919 was conducted in 1978 by English astronomers at the Royal Greenwich Observatory using modern plate-measuring equipment and computers. They completely vindicated the work of the original team, and yet their re-analysis had gone totally unrecognized and unread. It was even misrepresented in the one book which did allude to it, Stephen Hawking’s A Brief History of Time. So I felt it was...[read on]

Learn more about No Shadow of a Doubt at the Princeton University Press website.

My Book, The Movie: No Shadow of a Doubt.

The Page 99 Test: No Shadow of a Doubt.

--Marshal Zeringue