Latest Plasma Stories

Space Dust Likely Culprit Behind Fallen Satellites
2013-02-27 12:00:13

Lee Rannals for redOrbit.com - Your Universe Online According to an aeronautics and astronautics professor at Stanford University, "space dust" is the likely culprit behind why satellites fail. Satellites are threatened by both asteroids and "space junk," which are particles of man-made debris that orbit Earth. However, the threat from these impacts is actually relatively low, and most satellites that have died in space were knocked out by something entirely different. Space dust,...

Densest Artificial Ionospheric Plasma Clouds Produced Using HAARP
2013-02-26 10:34:33

U.S. Naval Research Laboratory U.S. Naval Research Laboratory research physicists and engineers from the Plasma Physics Division, working at the High-frequency Active Auroral Research Program (HAARP) transmitter facility, Gakona, Alaska, successfully produced a sustained high density plasma cloud in Earth's upper atmosphere. "Previous artificial plasma density clouds have lifetimes of only ten minutes or less," said Paul Bernhardt, Ph.D., NRL Space Use and Plasma Section. "This higher...

2013-02-19 12:04:26

The results are significant because they can help to improve our understanding of medical conditions, such as thrombosis, aneurysms and arteriosclerosis. The research team is publishing its results in Physical Review Letters and the American Physical Society has highlighted the work on its Physics website, placing it on the Focus List of important physics news. Blood flows differently than water. Anyone who has ever cut themselves knows that blood flows viscously and rather erratically....

2013-02-18 23:02:42

The US based company welding machine seller, Longevity Global Inc, has a limited but successful series of plasma cutting machines. These come in 1 phase plasma cutters and 2 phase plasma cutters to meet specific requirements. Hayward, CA (PRWEB) February 18, 2013 The US based company welding machine seller, Longevity Global Inc, has a limited but successful series of plasma cutting machines. These come in 1 phase plasma cutters and 2 phase plasma cutters to meet specific requirements. The...

2013-02-13 17:45:20

Electric rocket engines known as Hall thrusters, which use a super high-velocity stream of ions to propel a spacecraft in space, have been used successfully onboard many missions for half a century. Erosion of the discharge channels walls, however, has limited their application to the inner solar system. A research team at Caltech's Jet Propulsion Laboratory, in Pasadena, Calif., has found a way to effectively control this erosion by shaping the engine's magnetic field in a way that shields...

2013-01-28 14:48:13

Charged particle accelerators have become crucially important to modern day life, be it in health care for cancer treatment or for answering important fundamental scientific questions like the existence of the HIGGS boson, the so called 'God particle'. In a simple picture, charged particles like electrons and protons are accelerated between two end plates across which an electrical voltage is applied. High energies need high voltages (millions and billions of volts) and long acceleration...

Energy Bursts Boost Temperature Of The Solar Corona
2013-01-23 12:11:30

Lee Rannals for redOrbit.com - Your Universe Online Scientists say they have solved a piece of the puzzle as to why the farther away you get from the surface of the Sun, the hotter you get. The visible surface, or photosphere, on the Sun is 10,000 degrees Fahrenheit, but as you move away from it, you pass through a layer of hot, ionized gas or plasma called the corona. Scientists have been puzzled for a while about how the solar atmosphere can get hotter, rather than colder, the farther...

NASA Cluster Mission Sheds Light On Mysteries Of Solar Winds
2013-01-09 14:42:24

Brett Smith for redOrbit.com - Your Universe Online Data collected from the European Space Agency´s (ESA) Cluster Mission showed for the first time how turbulence within solar wind can create a warming effect as the charged particles travel away from the sun. The solar wind is formed by electrically charged plasma being ejected from the sun´s super hot atmosphere. According to a new report in the new issue of Physical Review Letters based on Cluster data, very small...

Latest Plasma Reference Libraries

2013-03-16 00:00:00

Hannes Olof Gösta Alfvén (May 30, 1908 - April 2, 1995) was a Swedish plasma physicist born in Norrköping, Sweden. Alfvén received his PhD from the University of Uppsala in 1934. His thesis was titled "Investigations of the Ultra-short Electromagnetic Waves." He was originally trained as an electrical power engineer and later moved on to research and teaching in the fields of plasma physics. Alfvén made many contributions to plasma physics, including theories describing the...

2004-10-19 04:45:41

Heliopause -- The heliopause is the boundary where our Sun's solar wind is stopped by the interstellar medium. The solar wind blows a "bubble" in the interstellar medium (the rareified hydrogen and helium gas that permeates the galaxy). The point where the solar wind's strength is no longer great enough to push back the interstellar medium is known as the heliopause, and is often considered to be the outer "border" of the solar system. The distance to the heliopause is not precisely...

2004-10-19 04:45:41

Solar Prominence -- Solar prominences are large arch-shaped structures observable in the solar corona. These often have a twist and occasionally become unstable, ejecting plasma and magnetic flux out from the sun. The physics of solar prominence instability is believed to be governed by magnetic forces and magnetic helicity issues. It is thought that instability occurs when a magnetic flux tube becomes excessively twisted. ----- Click here to learn more on this topic from eLibrary:

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Word of the Day
  • A blustering, bullying fellow; a pot-valiant braggart; a bully.
This word is named for Draw-Can-Sir, a character in George Villiers' 17th century play The Rehearsal.