Quantum measurement precision approaches Heisenberg limit
New Research Promises Better Atomic Clocks
Adding leap second this year expected to cause Internet problems
Elusive dark matter may be detected with GPS satellites
The everyday use of a GPS device might be to find your way around town or even navigate a hiking trail, but for two physicists, the Global Positioning System might be a tool in directly detecting and measuring ...
Atomic timekeeping, on the go
What time is it? The answer, no matter what your initial reference may be—a wristwatch, a smartphone, or an alarm clock—will always trace back to the atomic clock.
Physicists propose molecular clock to expose new physics
Theorists propose globally networked entangled atomic clock
How to test the twin paradox without using a spaceship
Forget about anti-ageing creams and hair treatments. If you want to stay young, get a fast spaceship. That is what Einstein's Theory of Relativity predicted a century ago, and it is commonly known as "twin ...
JILA strontium atomic clock sets new records in both precision and stability
Heralding a new age of terrific timekeeping, a research group led by a National Institute of Standards and Technology (NIST) physicist has unveiled an experimental strontium atomic clock that has set new ...
Siberian hamsters show what helps make seasonal clocks tick
Many animals, including humans, have internal clocks and calendars to help them regulate behavior, physiological functions and biological processes. Although scientists have extensively studied the timekeeping ...
NIST ytterbium atomic clocks set record for stability
A pair of experimental atomic clocks based on ytterbium atoms at the National Institute of Standards and Technology (NIST) has set a new record for stability. The clocks act like 21st-century pendulums or ...
Physicists discover atomic clock can simulate quantum magnetism
Researchers at JILA have for the first time used an atomic clock as a quantum simulator, mimicking the behavior of a different, more complex quantum system.
Researchers build two versions of new most accurate clock ever
A rock is a clock: Physicists use matter to measure time
What is the simplest, most fundamental clock? Physicist Holger Müller and his UC Berkeley colleagues have shown that a single atom is sufficient to measure time using its high-frequency matter wave. Conversely, ...