Young stars ejecting plasma could give us clues into the Sun’s past Kyoto, Japan — Down here on Earth we don’t usually notice, but the Sun is frequently ejecting huge masses of plasma into space. These are called coronal mass ejections (CMEs). They often occur together with sudden brightenings called flares, and sometimes extend far enough to disturb Earth’s magnetosphere, generating space weather phenomena including auroras or geomagnetic storms, and even damaging power grids on occasion. Scientists believe that when…
“Any ideas what these bright yellow fuzzy objects are?” the volunteer wrote on a project message board.
Due to the increasing number of decentralized power feeder it becomes more and more difficult to keep up the stability of the power grid. For power feeder in low- and medium voltage power grid the ohmic part of the impedance gains more influence than in the transport grid. This means that the coupling of frequency and voltage to active and reactive power can be completely inverted compared to the common droop control. AGIDC solves this problem of droop control for decentralized power feeder in low- and medium voltage grids. AGIDC – with an impedance dependent static function – provides a droop control in a general form. The power feeding can be adapted to changing grid impedances and to other requirements from the transport grid.
The idea of computing systems based on controlling atomic spins just got a boost from new research performed at the Massachusetts Institute of Technology (MIT)…
The construction of the facilities for the JUNO neutrino experiment has been initiated with an official groundbreaking ceremony near the south Chinese city of…
But manufacturers have also begun experimenting with a new generation of “cobots” designed to work side-by-side with humans, and University of…
When François Englert and Peter Higgs were awarded the 2013 Nobel Prize, a scientific breakthrough was honored that could hardly be more spectacular: born from…
The Deep Space Climate Observatory, or DSCOVR, spacecraft will orbit between Earth and the sun, observing and providing advanced warning of extreme emissions…
A group of scientists led by the University of Birmingham has discovered the oldest known solar system containing Earth-sized planets. Five of these…
Miniature light detectors in frog eyes known as retinal rod cells are directly and unambiguously shown to detect single photons of light — an astounding…
Very high-energy gamma rays are the best tracers of cosmic accelerators such as supernova remnants and pulsar wind nebulae – end-products of massive stars….
University of California, Berkeley, scientists have proved a fundamental relationship between energy and time that sets a “quantum speed limit” on processes…
The mission of NASA's Dawn spacecraft to the asteroid belt has entered into its second phase: after a more than year-long stay at the asteroid Vesta and an…
In this quantum phenomenon, called geometric scaling, the triatomic molecules fit inside one another like an infinitely large set of Russian nesting dolls.
In cooperation with the Technical University of Braunschweig and several partners, Siemens is working on a comprehensive assistance system for visually…
The forecasting tool will be incorporated into the integrated SiMobility Connect mobility platform, which links carsharing firms, public transport companies,…
The research will be led by Dr. Chia Soo, a UCLA professor of plastic and reconstructive surgery and orthopaedic surgery, who is member of the Eli and Edythe…
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