Researchers have characterized the temperature-induced frequency shifts of a thorium-229 nuclear transition—an important step in establishing thorium clocks as next-generation frequency standards.
Most clocks, from wristwatches to the systems that run GPS and the internet, work by tracking regular, repeating motions. To build a clock, you need something that ticks in a perfectly repeatable way.
The interior of a 1970 "atomic clock" designed to work in the space, exposed at the "Time and navigation" exhibition at the Smithsonian National Air and Space Museum in Washington, April 10, 2013.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results