Fifteen years ago, while languishing in traffic between Berkeley, Calif., and Silicon Valley, Carl Haber tuned in to a radio interview with Mickey Hart, the former Grateful Dead drummer turned music preservationist. Dr. Haber, a particle physicist, listened as Mr. Hart discussed his concern over historic audio recordings that were deteriorating. “He was talking about how sound recordings are on these fragile materials,” Dr. Haber recalls. “So it was kind of a challenge, sort of a plea.” Dr. Haber thought he could help. At the Lawrence Berkeley National Laboratory, where he was developing equipment for the Large Hadron Collider, the world’s most powerful particle accelerator, he had been using precision optical tools to measure devices that would help to track subatomic particles. Read more: http://www.wsj.com/articles/the-physicist-whos-saving-the-music-1440169464