(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
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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
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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.
General Physics
Nov 12, 2014
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Performing high-resolution, high-sensitivity measurements of light and matter at the quantum limit requires extraordinary tools. Due to the difficulties of manipulating atoms with the necessary control, such measurements ...
Quantum Physics
Sep 12, 2014
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ESA has welcomed the arrival of Pharao, an important part of ESA's atomic clock experiment that will be attached to the International Space Station in 2016.
General Physics
Jul 28, 2014
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It is difficult to imagine the modern world without the Global Positioning System (GPS), which provides real-time positioning, navigation and timing (PNT) data for countless military and civilian uses. Thanks in part to early ...
Engineering
Jul 25, 2014
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Researchers from the National Institute of Standards and Technology (NIST) and California Institute of Technology (Caltech) have demonstrated a new design for an atomic clock that is based on a chip-scale frequency comb, ...
Optics & Photonics
Jul 22, 2014
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The world is mostly neutral. That is, most of the atoms in our environment are electrically neutral. The number of electrons in the outer parts of atoms equals the number of protons at the centers of atoms. As one or more ...
General Physics
Jul 18, 2014
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