Atomic clocks are the most accurate clocks in the world. In an atomic clock, electrons jumping from one orbit to another decides the clock's frequency. To get the electrons to jump, researchers shine light on the atoms using ...
Quantum Physics
Mar 9, 2015
1
79
A state-of-the-art optical atomic clock, collaboratively developed by scientists from the University of Warsaw, Jagiellonian University, and Nicolaus Copernicus University, is now "ticking away" at the National Laboratory ...
General Physics
Feb 26, 2015
0
17
Japanese researchers have built a pair of clocks which they say are so accurate they will lose a second only every 16 billion years—longer than the Earth has been around.
General Physics
Feb 23, 2015
8
169
Seattle Seahawks cornerback Richard Sherman gets called a lot of things. He calls himself the greatest cornerback in the NFL (and Seattle fans tend to agree). Sportswriters and some other players call him a loudmouth and ...
Other
Jan 30, 2015
0
17
The Bulletin of the Atomic Scientists says Earth is now closer to human-caused doomsday than it has been in more than 30 years because of global warming and nuclear weaponry. But other experts say that's way too gloomy.
Other
Jan 22, 2015
5
42
Most people would feel they can count on one day comprising the same number of hours, minutes and seconds as the next. But this isn't always the case – June 30 will be a second longer in 2015 with the addition of a leap ...
General Physics
Jan 9, 2015
5
54
(Phys.org) —Officials at the International Earth Rotation Service have announced that a leap second will be added to the year this summer to allow for syncing up atomic clock time with the Earth's rotational time. The announcement ...
(Phys.org) —It was an interesting time for physics last week as one team of researchers suggested that elusive dark matter may be detected with GPS satellites. They propose testing the idea that dark matter is arranged ...
Are the fundamental constants really constant? Recent investigations carried out at the Physikalisch-Technische Bundesanstalt (PTB) have shown that one essential fundamental constant – namely the mass ratio of protons to ...
General Physics
Nov 18, 2014
1
0
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 dark matter, ...
General Physics
Nov 17, 2014
12
0
