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World Digital Library March 19. Full Moon Super

not miss the opportunity this weekend the moon will look a little larger and brighter than in the past 20 years.
The satellite of the Earth is at its perigee, that is, its elliptical orbit places it closer our planet than it has been since March 1993 therefore appear to be size 14% larger and up 30% brighter . In particular, it will be 50,000 miles closer of the Earth than usual, the closest of our planet has been since then. "The phenomenon is worthy of being watched because it always coincides with the perigee full moon phase," recalled the astronomer Geoff Chester, Naval Observatory United States.

If you want to know more about the Moon:
* Wikipedia Solarviews
* *
Eureka
* Nasa

Stuent Initiatons Piç

The sound of the earthquake in Japan live over the Internet

The sound of the earthquake and its aftershocks are being captured by the LIDO system, equipped with hydrophones that record, real time and through the Internet, sounds the seabed. The operation is as follows: you get an automatic recording of acoustic events detected and the sources identified and classified according to whether biological or anthropogenic origin. The system allows simultaneous listening to what happens at different points of observation.

March 11, at 1445 hours (local time in Japan), LIDO system detected and recorded acoustically undersea earthquake observatories JAMSTEC agency, located off the coast of Kushiro and Hatsushima. The recording is available through the project website LIDO, within the 'Sound Library' (paragraph Earthquakes, which contains the earthquake and two aftershocks of the seismic event recorded from two observatories in Japanese).

Source: WTO - Universitat Politècnica de Catalunya

If you want to hear LIDO

visit

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A central uses a technology called boiling water reactor or BWR (Boiling Water Reactor). The core of the reactor fuel or heated in a pot of water and protected by a structure called containment. The fuel reaches up to 2,000 degrees and boils the water. The steam is piped to a turbine that generates electricity. For this reason, the fuel must be covered by water to avoid overheating.

What happened in Japan?
The earthquake damaged power supplies from abroad. The plant then activated the emergency system alone, but it broke flooding. Without electricity, the system failed core cooling and began to overheat. Was used to prevent sea water, but not enough causing the kernel heats up destabilizing the system
Since the core material is different: the fuel of uranium or plutonium and zirconium metal sheaths that protect the control rods made of boron iodide (a material that stops nuclear reactions), in addition, steel and cement, when the temperature rises, all these materials react uncontrollably.
steam at high temperature metals oxidize rapidly. The pods are deteriorating and volatile radioactive particles released fuel. In addition, the oxidation process releases hydrogen which is explosive.

Can pass as in Chernobyl.
No, since it had no containment structure, the core spin blew releasing most of its content. Japan is expected to resist the containment vessel
In Japan, on the other hand has another problem: The spent fuel is stored in swimming pools that maintain a high temperature with high radioactivity at the moment have also been left without water cool them.
have so far been released into the atmosphere, the lighter particles. The noble gases krypton and radon and elements such as iodine, cesium, strontium, ruthenium and tritium.

http://www.mityc.es/ENERGIA/NUCLEAR/CENTRALES/Paginas/ListadoCentrales.aspx

http://www.inza.com/ainoa/Funcionamiento% 20of% 20the% 20central% 20nuclear.htm

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