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Hanafi Sudi
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Only Muslims can use the word Allah to refer to God, the Malaysian King has declared adding fuel to the long-running dispute and raising questions over rights of religious minorities in the country where Islam is followed by about 60 % of the population.

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Volcanic lightning : For a long time, the lightning in volcanoes mystified people. Indeed some researchers risked life and limb to capture this phenomenon. Now scientists have duplicated this lightning in the lab. Fascinating indeed!

Article Extract: Volcanic lightning, the researchers hypothesize, is the result of charge-separation. As positively charged ejecta makes its way skyward, regions of opposite but separated electrical charges take shape. A lightning bolt is nature's way of balancing the charge distribution. The same thing is thought to happen in regular-old thunderstorms. But this much is obvious, right? So what makes volcanic lightning different?

Few scenes in nature give off menacing vibes as effectively as flashes of lightning dancing around a tower of ash being spewed angrily from the fiery maw of a volcano. It’s enough to catch the Eye of Sauron. Turbulent motion was the key to creating the miniature lightning discharges that flickered around the outside of the jet in large numbers.

So what is it about the turbulent motion? There are a number of ways in which individual particles build positive or negative charges—mostly collision interactions—but those charges need to be separated to trigger an electric discharge. The turbulence creates a lot of complex motion that inevitably clusters particles together. If one cluster happens to be dominated by particles with negative charge and another is positive, you get lightning. When there are multiple sizes of particles, each behaves differently during the eruption, which can also help create charge separation.

+Discovery News link: http://news.discovery.com/earth/rocks-fossils/volcanic-lightning-how-does-it-work-130329.htm

+Ars Technica Link and story : http://arstechnica.com/science/2014/01/volcanic-lightning-in-a-laboratory/

Youtube Video Link: Volcano Lightning in the Lab 1

+National Geographic link: http://news.nationalgeographic.com/news/2012/06/pictures/120611-volcano-lightning-volcanic-redoubt-eos-science/

Research paper: http://geology.gsapubs.org/content/early/2013/12/05/G34802.1

Pics courtesy: Natgeo, Ars Technicia, Gizmodo.

#volcano #lightning #science  
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Halusss #kids
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