Researchers at the National Institute of Standards and Technology (NIST) have produced and precisely measured a spectrum of X-rays using a new, state-of-the-art machine. The instrument they used to measure the X-rays took ...
General Physics
May 12, 2017
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603
(Phys.org)—Radio-astronomical observations of a distant galaxy indicate that the ratio of the proton's mass to that of the electron has hardly changed over cosmic history. This fundamental constant of nature has changed ...
Astronomy
Dec 13, 2012
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Scientists in Finland have developed a nanodevice that can measure the absolute power of microwave radiation down to the femtowatt level at ultra-low temperatures—a scale trillion times lower than routinely used in verifiable ...
Quantum Physics
May 25, 2023
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652
The validation and application of theories in physics require the measurement of universal values known as fundamental constants.
General Physics
Dec 2, 2020
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2167
(Phys.org) —A team of researchers from a variety of institutions in the U.S. has reevaluated a measurement made of the lifetime of a neutron back in 2005 and in doing so has reduced the uncertainty of the accuracy of the ...
In a recently published article in Physical Review Letters, the ALICE collaboration has used a method called femtoscopy to study the residual interaction between two-quark and three-quark particles. Through this measurement, ...
Quantum Physics
Nov 17, 2021
1
902
The Event Horizon Telescope (EHT) has recently mapped the central compact object of the galaxy M87 with an unprecedented angular resolution. Though the remarkable breakthrough has been interpreted based on theory that M87 ...
Astronomy
Nov 16, 2021
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56
In a new study, researchers showed that quantum light can be used to track enzyme reactions in real time. The work brings together quantum physics and biology in an important step toward the development of quantum sensors ...
Optics & Photonics
Nov 18, 2019
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264
Today (3 December), an international team of astronomers announced the most detailed ever catalogue of the stars in a huge swathe of our Milky Way galaxy. The measurements of stellar positions, movement, brightness and colours are ...
Astronomy
Dec 3, 2020
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173
(Phys.org)—New movies of the transit of Venus on 6 June 2012, viewed from two different locations on Earth, clearly show the parallax effects that have made Venus transits so important historically. The results were presented ...
Space Exploration
Oct 1, 2012
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