These Physicists Watched a Clock Tick for 14 Years Straight
Bijunath Patla\u2019s experiment sounds like a real bore: Gather 12 of the most accurate clocks around the world, and watch them tick. It\u2019s like a physicist\u2019s version of watching paint dry. Patla\u2019s team, based at the National Institute of Standards and Technology in Boulder, Colorado, began monitoring the clocks on November 11, 1999. And they\u2019ve kept watching for some 4.5 billion seconds\u2014over 14 years. But their patience paid off.