Scientists at the University of Sheffield and Lockheed Martin Solar and Astrophysics Lab have solved a 127-year-old problem about the origin of supersonic plasma jets (spicules) which continuously shoot up from the Sun. Their findings are published in today’s edition of Nature.
Spicules, are jets of gas or plasma that are propelled upwards from the surface of the Sun at speeds of about 90,000 kilometres per hour. They are fairly short lived, with each jet lasting only about 5 minutes, but reach heights of 5000 kilometres above the Sun’s surface. Their short life span and small size (less than 600 km) have meant that, although there are about 100,000 spicules at any one time in the Sun’s chromosphere, until now they have remained largely unexplained.
One of the reasons why these energetic jets are studied is because thay may contribute to solar wind. The solar wind is a stream of particles that sweeps past the Earth’s orbit and any disturbance to it can cause changes to the Earth’s upper atmosphere and space environment, damaging satellites in orbit.
Lorna Branton | alfa
New Boost for ToCoTronics
23.05.2019 | Julius-Maximilians-Universität Würzburg
The geometry of an electron determined for the first time
23.05.2019 | Universität Basel
Physicists at the University of Basel are able to show for the first time how a single electron looks in an artificial atom. A newly developed method enables them to show the probability of an electron being present in a space. This allows improved control of electron spins, which could serve as the smallest information unit in a future quantum computer. The experiments were published in Physical Review Letters and the related theory in Physical Review B.
The spin of an electron is a promising candidate for use as the smallest information unit (qubit) of a quantum computer. Controlling and switching this spin or...
Engineers at the University of Tokyo continually pioneer new ways to improve battery technology. Professor Atsuo Yamada and his team recently developed a...
With a quantum coprocessor in the cloud, physicists from Innsbruck, Austria, open the door to the simulation of previously unsolvable problems in chemistry, materials research or high-energy physics. The research groups led by Rainer Blatt and Peter Zoller report in the journal Nature how they simulated particle physics phenomena on 20 quantum bits and how the quantum simulator self-verified the result for the first time.
Many scientists are currently working on investigating how quantum advantage can be exploited on hardware already available today. Three years ago, physicists...
'Quantum technologies' utilise the unique phenomena of quantum superposition and entanglement to encode and process information, with potentially profound benefits to a wide range of information technologies from communications to sensing and computing.
However a major challenge in developing these technologies is that the quantum phenomena are very fragile, and only a handful of physical systems have been...
Working group led by physicist Professor Ulrich Nowak at the University of Konstanz, in collaboration with a team of physicists from Johannes Gutenberg University Mainz, demonstrates how skyrmions can be used for the computer concepts of the future
When it comes to performing a calculation destined to arrive at an exact result, humans are hopelessly inferior to the computer. In other areas, humans are...
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23.05.2019 | Materials Sciences
23.05.2019 | Materials Sciences
23.05.2019 | Physics and Astronomy