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PTB Terahertz calibration satisfies US laser manufacturer
Terahertz radiation still lies in a metrological no man's land – a metrology gap. The Physikalisch-Technische Bundesanstalt (PTB) can now close this gap. For the first time, a commercial Terahert...
Process Engineering |
Read moreResearchers Contribute to Discovery of Gamma Rays from Starburst Galaxy
The discovery has just been published by the journal Nature. The study reports that researchers using the VERITAS array of four telescopes at the Fred Lawrence Whipple Observatory in Arizona have dete...
Physics and Astronomy | Read moreElectron self-injection into an evolving plasma bubble
Thirty years ago, theorists John Dawson and Toshiki Tajima proposed an idea for making them thousands of times smaller: surf the particles on plasma waves driven by short intense laser pulses. Since p...
Physics and Astronomy | Read moreScientists build first 'frequency comb' to display visible 'teeth'
Scientists at the University of Konstanz in Germany and the National Institute of Standards and Technology (NIST) in the United States have built the first optical frequency comb—a tool for precisely ...
Physics and Astronomy | Read moreA 2-for-1 for NASA's Aqua Satellite: Lupit and 23W in Western Pacific
Tropical Storm Lupit is becoming extra-tropical and is expected to track parallel to Japan while remaining at sea, east of the island. Meanwhile, Tropical Storm 23W is approaching Saipan and Andersen ...
Earth Sciences | Read moreA Long Night Falls Over Saturn's Rings
This happens during Saturn's equinox, when the sun is directly over Saturn's equator. At this time, the rings, which also orbit directly over the planet's equator, appear edge-on to the...
Physics and Astronomy | Read moreTyphoon Melor and Tropical Storm Parma mean double trouble in the western Pacific
There's double-trouble in the Western Pacific with one typhoon and one tropical storm bringing soaking rains, dangerous surf and gusty winds to two different locations. Typhoon Melor is affecting...
Earth Sciences | Read moreFemtoseconds lasers help formation flying in space
NPL, along with collaborators, produced technical reports for the European Space Agency. The conclusions demonstrated that the lasers were a suitable method for measurement in such missions.Fo...
Physics and Astronomy | Read moreFirst light for BOSS -- a new kind of search for dark energy
A part of the Sloan Digital Sky Survey III (SDSS-III), BOSS achieved "first light" on the night of September 14-15, when it acquired data with an upgraded spectrographic system across the e...
Physics and Astronomy | Read moreNew way to monitor faults may help predict earthquakes
Paul Silver* and Taka'aki Taira of the Carnegie Institution's Department of Terrestrial Magnetism, with Fenglin Niu of Rice University and Robert Nadeau of the University of California, Berk...
Earth Sciences | Read moreScientists return from first ever riser drilling operations in seismogenic zone
The CHIKYU is operated by the Japan Agency for Marine-Earth Science and Technology (JAMSTEC) in partnership with the Integrated Ocean Drilling Program. The expedition began with drilling operations at...
Earth Sciences | Read moreStudy reveals seismic shift in methods used to track earthquakes
The team, led by scientists from the University of Edinburgh, says that the new method, which uses data collected from earthquakes, potentially allows the Earth's seismic activity to be mapped mo...
Earth Sciences | Read morePrecise Radio-Telescope Measurements Advance Frontier Gravitational Physics
"Measuring the curvature of space caused by gravity is one of the most sensitive ways to learn how Einstein's theory of General Relativity relates to quantum physics.Uniting gravity ...
Physics and Astronomy | Read moreNASA satellite sees Hurricane Jimena explode in strength over 4 days
Hurricane Warnings are up for the southern Baja California, as powerful Category Four Hurricane Jimena threatens. Jimena developed over the weekend, and the infrared instrument on NASA's Aqua sat...
Earth Sciences | Read moreLIGO listens for gravitational echoes of the birth of the universe
An investigation by the LIGO (Laser Interferometer Gravitational-Wave Observatory) Scientific Collaboration and the Virgo Collaboration has significantly advanced our understanding the early evolution...
Physics and Astronomy | Read more
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