Latest Second Stories
Did you find some of your favorite websites acting wonky this weekend? If so, you may want to blame the omniscient keepers of all knowledge for that.
With some clever understanding of the Earth’s rotation and a little trickery, scientists at the National Physical Laboratory (NPL) will create time, giving the world one extra second to enjoy their late-night activities.
Atomic clocks based on the oscillations of a cesium atom keep amazingly steady time and also define the precise length of a second.
A clock accurate to within a tenth of a second over 14 billion years – the age of the universe – is the goal of research being reported this week by scientists from three different institutions.
As time passes, new technology evolves in order to keep time. Soon the trusty atomic clock may be replaced by a nuclear clock, which keeps time to 1/20th of a second in 14 billion years.
The ability to accurately measure a second in time is at the heart of many essential technologies; the most recognizable may be the Global Positioning System (GPS).
An attempt to eliminate leap seconds and permanently change how time is measured has been postponed until 2015 by the International Telecommunications Union.
Leap seconds are tiny bits of time added to calendars and clocks in hopes of reconciling the difference between atomic time used by computer systems and time as defined by measuring the Earth’s movement around the sun and its daily, but slightly slowing, rotation.
Researchers have found that an atomic clock at the U.K.'s National Physical Laboratory (NPL) has the best long-term accuracy of any other clock in the world.
Cesium (or Caesium) is a chemical element with the symbol Cs and atomic number 55. Caesium is a soft alkali metal that is silvery-gold. It melts and liquefies at 83 degrees Fahrenheit and is one of only five metals that are liquid close to room temperature. Caesium is a metal that is most widely known for its use in atomic clocks. Cesium comes from the Latin word caesius meaning "˜bluish-gray'. It was discovered in 1860 by Robert Bunsen and Gustav Kirchhoff in Durkheim, Germany in mineral...
- To writhe; struggle or twist about with more or less force; wriggle.
- To scribble, jot.