I've Heard That The Earth's Rotation Is Slowing. How Long Until Days Last 25 Hours?
Tuesday, September 30, 2008 - 09:49
in Physics & Chemistry
We could all use an extra hour in the day, but clocks won't need to be extended anytime soon. The time the Earth takes to make a complete rotation on its axis varies by about a millionth of a second per day, says physicist Tom O'Brian of the National Institute of Standards and Technology. While some days are shorter than average, the planet's rotation shows a long-term slowing trend, ultimately leading to a longer day. read more