Time may change after tomorrow as tests on a new generation of hyper-precise #atomic
clocks are set to begin, giving the world’s official timekeeper, the caesium atomic clock, serious competition.
Caesium clocks are currently used to define a ‘second’, which is how long it takes caesium atoms to absorb or emit waves as it changes energy states to cycle through billions of oscillations. The new clocks will harness elements like strontium and ytterbium and are expected to be 100 times more precise, potentially changing how we define the second and universal time.
Read more in this +Nature News & Comment
story about the experiments and how the changing state of elements is helping the world coordinate its universal time.