measurements
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Other Sciences
The new essay warns the dangers of non -literacy in measurements
Credit: UNSPLASH/CC0 Public domain Arthur Paul Pedsen is a teacher of CUNY REMOTE SENSTEMS (CREST) Systems (CREST) by New York’s City College of Engineering The main author is. The essay, published in the National Science Academy Journal of Proceedings, warns the dangerous meaning of non -literary measurements in modern scientific discourse and promotes a wide range of efforts to reform…
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Physics
Redefining the second: Optical atomic clock achieves record precision in comparative measurements
A new In+/Yb+ crystal clock ion trap in a vacuum chamber. Credit: PTB The next generation of atomic clocks “keep time” at laser frequencies. This is about 100,000 times faster than the microwave frequency of cesium clocks, which currently generate seconds. These optical clocks are still being evaluated, but some are already 100 times more accurate than cesium clocks. They…
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Environment
Direct measurements can reduce uncertainty in soil carbon credit markets
Credit: CC0 Public Domain Measuring soil carbon directly, rather than relying on predictive models, provides hard evidence of how much carbon is being stored, according to a recent study co-authored with scientists at Yale School of the Environment. It will enable a better assessment of the reliability of agricultural carbon markets. Published in “Environment Research Letters”. By using appropriate research…
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Physics
Neutron star measurements put limits on color superconductivity in dense quark matter
Ground-based radio telescopes, gravitational wave detectors, and space-based X-ray telescopes (right) all measure neutron stars (top left, showing mergers) and pairings of differently colored quarks in dense matter (bottom left). ). ). Credit: Rachel Steinhorst, NASA/Roscosmos, California Institute of Technology/MIT/LIGO Lab At very high densities, quarks are expected to form pairs, similar to electrons in superconductors. This behavior of dense…
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Space & Cosmos
NASA’s micromission Lunar Trailblazer will take macroscopic measurements of the lunar surface in 2025
NASA’s upcoming Artemis II mission is scheduled to return astronauts to the moon by as early as April 2026. The last time astronauts were on the moon was the Apollo 17 mission in 1972. Artemis II will utilize NASA’s Space Launch System. This is an extremely powerful rocket that enables manned space exploration beyond Earth’s atmosphere. The four-person crew will…
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Earth
Satellite measurements significantly improve ocean floor maps
Using satellite altimetry data from SWOT, scientists created a global map of ocean gravity and discovered thousands of new seamounts. (Etvös is a unit that measures the ocean’s vertical gravity gradient.) Credit: Yao Yu et al, Science (2024). DOI: 10.1126/science.ads4472 The Surface Water Ocean Topography (SWOT) mission instrument has enabled the clearest satellite-generated ocean floor map to date, according to…
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Physics
Accessing little-known nucleons: New neutron measurements help physicists learn about nucleon structure and spin
Central neutron detector installed in Experiment Hall B. Sylvia Nicolai and her team from the Irène Joliot-Curie (IJCLab), a joint research unit of the CNRS in Orsay, France, and her team at the Université Paris-Saclay and the Université de la Ville de Paris, are collaborating with the French National Construction of the detector began in 2011 with funding from the…
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Earth
Measurements from ‘lost’ sea glider provide new insights into Antarctic ice melting
Gillian Damerel (former UEA) prepares to deploy the Sea Glider Merlin with the Ross Ice Shelf in the background. Credit: Walker Smith A new study reveals for the first time how rising sea temperatures have accelerated the melting of Antarctica’s major ice shelves over the past 40 years. Scientists at the University of East Anglia (UEA) say the study, which…
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Physics
Scientists calculate predictions for meson measurements
In electron-ion collider (EIC) collisions, interactions between virtual photons emitted by colliding electrons reveal the arrangement of quarks and gluons within a hadron (in this case a proton that is part of a larger atomic nucleus). It will be. Credit: Tiffany Bowman/Brookhaven National Laboratory Nuclear physics theorists at the U.S. Department of Energy’s (DOE) Brookhaven National Laboratory demonstrate that complex…
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