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“This book is a labor of love and a rather personal document, shedding light on a portion of physics and chemistry history that previously seems to have received too little careful analysis. … Astronomer Nath … has done some key detective work in mid-19th-century physics, starting with helium and expanding into the transformational perspective created by spectroscopy. … a fine book that makes good reading and fills a gap in the literature. It belongs in all college libraries. Summing Up: Highly recommended. All readership levels.” (K. L. Schick, Choice, Vol. 50 (11), July, 2013)
“Biman Nath clearly loves helium, and you very probably will too after reading this book. … I think typical ageing astronomers will enjoy the book … .” (Virginia Trimble, The Observatory, Vol. 133 (1233), April, 2013)