Electromagnetism news

Magnethydrodynamics

Magnethydrodynamics is the subject of a web site at http://mysite.du.edu/~jcalvert/phys/mhd.htm which it is claimed is 'closely related' to plasma dynamics. It involves the dynamics of matter moving in an electromagnetic field, especially where currents established in the matter by induction  modify the field. It involves conducting fluids, liquid and gas, but differs from plasma dynamics.

Earthquakes in Space

http://wattsupwiththat.com/2010/07/27/space-quakes/ and www.physorg.com/print199554868.html 'Spacequakes Rumble Near Earth' (with video clip, on both sites). Researchers making use of NASAs five THEMIS imaging spacecraft have discovered what they call 'space quakes' which are then described as 'space weather' with the 'punch of an earthquake'.

Lawrence Dixon and plasma in space

New Scientist July 24th page 39-41 says that in order to shield astronauts on the journey to Mars from solar wind radiation you simply put a magnet in the spacecrapft and this will create a shield round the spacecraft and keep the particles out. A second beauty is that they have found areas on the moon where the surface is protected by a shield, the shielded areas are lighter than the main surface, a spacecraft accidentally flew over one and its instruments registered the lack of charged particles. Lawrence adds, it seems the EU and plasma is winning in unexpected ways.

Magnetic Powerhouse

At http://news.nationalgeographic.com/news/2010/07/100715-science-space-mercury/ ... a flyby of Mercury revealed a huge power surge that 'we clearly do not understand' according to the story. The electromagnetic storms took place in Mercury's magnetic tail, and this forms when the solar wind pushes against a planet's magnetic field and the deformed field takes on a windsock shape. It says Mars and Venus do NOT have magnetic fields or tails - is this true?

Dark matter and the Sun

At www.wired.com/wiredscience/2010/07/dark-matter-sun/ ... this article and the web site were noted by member Gary Gilligan and forwarded to In the News at news [at] sis-group [dot] org and other members are invited to send details of web sites and papers, and newspaper reports, that they think might interest other members.

Electric Universe ... snippets of news ...

The big news is that Wal Thornhill is addressing an SIS meeting next week - at the Harlequin theatre in Redhill, Surrey (just off the M25). To get an idea of what is being discussed go to www.electricuniverse.info/Electric_Universe_on_Wikipedia/ where there is an outline of the model suitable for the uninitiated.

Magnetic Stripes on Mars

Go to www.physorg.com/print196926270.html June 28th ... to discover the latest attempt to explain magnetic stripes on Mars. It is not getting much support at the moment.

Electric Earth Quakes

The role of electricity in earthquakes is still part of the Thunderbolts forum at www.thunderbolts.info. There is a linke to a couple of papers such as one at www.space.com/searchforlife/090423-seti-earthquake-detection.htm by Friedemann Freund in which he outlines some of the difficulties. The problem is getting the electrons out of the deep crust as they need to hitch a ride.

Betelgeuse

At www.physorg.com/print196085867.html June 18th ... coming up to our July meeting on Wal Thornhill's theory of electricity in the universe we may note a paper published in the journal Astronomy and Astrophysics concerns the discovery of a magnetic field at the surface of the supergiant star Betelgeuse. The rotation of stars like the Sun produces flows of ionised material in their inner layers - triggering a dynamo mechanism causing the generation of a magnetic field.

Man-made aurora

At www.physorg.com/print195192885.html June 9th ... our understanding of terrestrial space weather has been partly based on incorrect assumptions on how nitrogen in the atmosphere reacts when it collides with electrons produced by energetic ultraviolet sunlight and the solar wind. NASA fired electrons of differing energies through a cloud of nitrogen gas in order to measure the ultraviolet light emitted as a result of the collision.