In a handsome, expensive new book from Flammarion, historian and watchmaking expert Dominique Flechon takes readers on an illustrated journey through the history of timepieces, "from ancient astronomical observatories to atomic clocks," exploring the evolving science of timekeeping and the amazing, highly technical masterpieces the field engenders. To kick off the new year, we asked the folks at Flammarion (and their distributor, Rizzoli) to share a few of photographer Dominique Cohan's captivating images from The Mastery of Time: A History of Timekeeping, From the Sundial to the Wristwatch: Discoveries, Inventions, and Advances in Master Watchmaking, out January 10.