Electromagnetism news

Geomagnetism

At http://wattsupwiththat.com there are two more separate pages added to the blog. Go to top of Menu bar and click on Reference Pages and a drop down menu list appears. Click on Geomagnetic and this will take you to the new feature. At the bottom of the drop down list you can also click on solar - which is designed to accommodate postings on the subject of the Sun. Useful list of links on both pages.

An Electric Comet

This is another recommended web site from www.thunderbolts.info (see www.jmccanneyscience.com/CometHolmesSub_Page.HTM ). This is a web site of a scientist with time on his hands, one that hosts a weekly radio show on science in the USA. The story picked out goes back to 2007, and Comet Holmes. It suddenly flared up and became an extremely bright object a long way out from the Sun - and scientists were clearly perplexed.

Christmas Trees

At www.thunderbolts.info/tpod/2010/arch10/101224candles.htm ... an interesting article by Rens van der Sluijs on illuminated christmas trees - and plasmoids.

Dusty Plasma ... and tribulations of an EU proselytiser

The Plasma Universe Wikipedia-like Encyclopedia has some interesting entries (see www.plasma-universe.com/Dusty_plasma/ ). This one, with the title 'dusty plasma', sets out to describe precisely what this phenomenon is - and it raises some interesting possibilities. It is apparently a combination of plasma and micrometre sized particles. Such dusty particles can be charged and combined with plasma they will behave like plasma - and even acrete into larger particles, or grains.

The Magnetic Field of the Earth

At www.wired.com/wiredscience/2-1-/12/magnetic-copper-slag/ .... it seems that copper slag from Iron Age smelting activities at Khirbet es/Nahu in NE Jordan and from Timna in what is now southern Israel has been C14 dated to the 10 and 9th centuries BC, and a magnetic field that spike twice during the 180 years they studied, has been dated at 980 and 890BC. On both occasions the magnetic field jumped up in strength but within 20 years had fallen back down again.

Plasma and Magnetic Fields

NASA has another story to delight - the Cassini spacecraft took images of enormous clouds of plasma periodically blooming around Saturn, moving the planet 'like an unbalanced load of laundry on a spin cycle' and words to that effect. The hot plasma, they continue, producing a repeating signature like a thump in the rotating magnetic field. The big question now being asked - why are these plasma explosions happening in such a periodic manner?

Tall Bloke

The Tall Bloke blog is worth looking at as it ties in with ideas about the EU and those of Rhodes Fairbridge. As he is discussing real science the commenters tend to be level headed individuals who have something to contribute to the debate. A joy to read.

The Plasma Universe

At www.physorg.com/print207563537.html ... Princetown Plasma Physics Laboratory has released information on a Plasma Physics workshop - the fourth state of matter. It is a hot electrically charged gas that makes up the Sun and other stars, and fuels the production of fusion energy. Plasma physics governs much of the behaviour of the visible universe, from Tokamaki to extre-galactic jets that are 10 billion times larger than the solar system. A tokamak is a type of magnetic fusion energy experiment.

Sprites on a video clip

At NASA's Space Weather.com (see link at http://wattsupwiththat.com/2010/10/02/watching-lightning-jets-hit-the-atmosphere/ ) there is a video clip of huge lightning discharges that are striking the ionosphere from thunderstorms below. It says that gigantic jets of lightning play an unknown role in the global flow of electricity around the planet. This is cutting edge science at the moment and amateur astronomers are being asked to contribute. 

The Magnetic Moon, Lightning on Earth and Venus, and the Ring of Saturn that was invisible until now

Magnetised regions on the far side of the Moon have been found to deflect the solar wind, shielding the Moon's surface (presented last Friday, 24th September, at an EPS meeting in Rome). Airless bodies interact with the solar wind quite differently than the earth, for example.