Electromagnetism news

Electricity and the Moon

At http://malagabay.wordpress.com/2013/12/07/cosmic-ray-blues-the-bloody-moon/ ... we have another cracker by Tim Cullen. . A lunar eclipse provides Earth dwellers with a view of an orangey red Moon that provides mainstream consensus science with a chance to show off - and they do as they blame it all on refracted light once again - together with the amount of dust that might have collected in the atmosphere. Malaga Bay outright says this is a fiction - bet you had not thought so. He then takes us on a trip around the magnetosphere of the Earth and the magnetotail in particular.

Albedo

Albedo is derived from Latin = whiteness - in this instance it is reflected sunlight. From albus = white is the diffuse reflectivity or reflecting power of a surface (http://en.wikipedia.org/wiki/Albedo). Tim Cullen at http://malagabay.wordpress.com/2013/12/05/cosmic-ray-blues-lunar-luminos... ... takes a look at different sources in order to get a handle on Albdedo - referenced in climate studies, the reflective nature of white snow (on the surface, particularly at the Poles).

The weak magnetic field of the Milky Way

At http://cosmo.nyu.edu/~rj486/files/RJansson_PhD_thesis.pdf ... the magnetic field of the Milky Way. Each star in the Milky Way has its own magnetic field - like our Sun. Objects that orbit stars also have their own magnetic field - including the Earth. It is reasonable to assume each galaxy has its own magnetic field - but what is the strength of it?

The Greening of a Comet

At http://phys.org/print301901189.html ... why is comet ISON green? Green is a sign that the comet if becoming more active as it comes closer to the Sun. The green colour comes from its gases - which may include cyanogen (poisonous) and diatonic carbon (C2).

Solar UV and ozone

At http://tallbloke.wordpress.com/2013/10/23/new-paper-finds-solar-uv-varie... ... Dr Sandip Dhomse of the University of Leeds has a paper published in Atmospheric Chemistry and Physics that notes solar UV radiation can vary by as much as 100 per cent during solar cycles. Such wide changes in UV signifcantly affect stratospheric ozone production and thereby act as a solar amplification mechanism on temperature.

Black Holes now make new stars

The usual tale of black holes swallowing matter around them is beginning to change its tune. At http://phys.org/p;rint301741495.html ... see what you make of it

Churning Sun

At http://phys.org/print301210854.html ... the Sun's magnetic field is a churning and undulating cycle as it reaches solar maximum - it then flips. Solar maximum comes roughly every 11 years when it reverse polarity, typically creating a larger number of sun spots, aurora, and geomagnetic storms. In this view, sun spots are magnetic fields emanating from the Sun - but others might disagree about what causes them.

Comet ISON ... will it, won't it?

At http://phys.org/print301286033.html ... the headline reads, 'Is the Christmas comet cracking up?' and at http://phys.org/print301247934.html ... the headline is 'Incoming comet ISON appears intact' - so, contradicting each other. Is it breaking up or is it not breaking up?

The lightning and the Scree

Fred Hoyle, in one of his books, Ice I think, made a connection with scree formation and lightning, and thought it unlikely that frost action alone could have created all those broken rocks commonly found on the summit and in big heaps spilling down the sides of mountains in upland areas of Britain, such as the Lake District and the Peak District. It seems this point of view has now been vindicated in a new study that took place in the Drakonsberg Mountains of southern Africa - where frost action is not so obvious.

The Royals and Electricity in the atmosphere

In 1251 lightning is said to have destroyed the bedchamber of the queen at Windsor and shook the whole house. In the nearby Windsor Forest thirty five trees were split asunder (Matthew Paris, Historia Anglorum). Lightning struck this year too, striking houses and setting them abaze (Weather Eye, The Times). For example, in Wakefield lightning hit a chimney, passed into the loft and then travelled through the central heating system and set the house on fire.