One in a Billion
Saturday, March 15th, 2008The EE Times posting Atomic clocks plumb cosmological mysteries is reporting that the new quantum clocks are out doing the older atomic clocks.
The new quantum clocks are accurate to within 1 second every billion years. The older atomic clocks are pikers clocking in at only 1 second every 80 million years.
One proposed use of the new and improved clock is to determine if the fine-structure constant is changing.
There are other uses too.
According to NIST (National Institute of Standards and Technology), such ultra-accurate clocks are useful for synchronizing telecommunications networks, space navigation, satellite positioning and deep-space communications, and could enable new types of gravity sensors for exploring underground natural resources here on Earth.
…John

