Here is a list of equipment, materials and accessories that I have been very useful, especially for preparing the return. Essential if the school budget allows .. They can be used to perform rituals and supports display: labels and tables of presence, weather, calendar .. They are also highly useful for achieving many objects in handicrafts. The magnetic blackboard, black or white. (There are special crayons Whiteboard: no dust, no smell like markers and no tasks indelible on clothing). The flexible magnet sticker roll (or sheet, but it is more expensive ..): Cutting required. Ideal for sticking small square behind plastic labels that students manipulate the magnetic blackboard. Adhesive metal strips mounted on the walls can store these labels. laminator: we had praised me, but I delayed the purchase for years. Once the laminator in the school, I regretted having waited! It is much more resistant and clean with good old paper roll crystal sticker. Ideal for laminating labels attendance, activity, weather .. Also suitable for plastics activities, fact sheets left free consultation by students .. One day, I will detail more!. Images printouts or illustrations cut (Laminating) - Not laminator, I used the sheets A4 paper sticker on the printer and glued to a smaller box, and then laminated (plastic roll sticker). The foam creative (single-class mother, I used foam to my labels attendance: a flower level, the labels were formed by the petals: a different color for each level. First written in marker tissue. A small piece of magnet under each petal: Students reconstituted their flower magnetic blackboard, around the heart for their age) If one has a special cutter shaped compass is even better for fine cuts. Today, professional photographer, I now propose to sell my photographs in print art limited to 30 numbered copies signed. Some photographs are ideal for decorating kid's room: square format for printing the image on canvas, and most kids love the little beasts. The articles and fact sheets are protected by the Property Code system.A blog content is used for private or classroom uniquement.Pour questions about their use, contact me if you do not find an answer in the "conditions use ". The content and style of the blog and the site's corner are original creations protected by copyright.
Cosmic rays are accelerated in regions rich in massive stars is the link just established researchers from Center for the Study of Space Radiation (CESR CNRS, Université Paul Sabatier, OMP-OSU/INSU) Toulouse, from observations of the Large Magellanic Cloud made during the first year of operation of Fermi satellite of NASA. A discovery which sheds essential light on cosmic rays, discovered in 1912 but whose origin was previously highly uncertain. To conduct their research, scientists are quite naturally turned to a "factory of massive stars": the Large Magellanic Cloud, an irregular galaxy that orbits our own to 170,000 light years. In this region, an area known as 30 Doradus, is in particular very conducive to the formation of massive stars and has proven to be a significant source of cosmic rays. "It is easy to reveal this type of radiation because it has a particular signature: we automatically track the light is emitted gamma in the decay of neutral pions. These neutral pions are created by the collision of cosmic rays with interstellar gas atoms, "explains the researcher. In conjunction with markers of formation of massive stars [1], these new data collected by the satellite and its Fermi Telescope Large Area Telescope (LAT) led to the correlation between acceleration of cosmic rays and massive star forming regions, and Therefore, to better understand the origin of this radiation. Following this work, a result still surprised the researchers. "We thought the distribution of these cosmic rays would extend throughout the galaxy, and therefore that the galaxy is a luminous source of gamma rays. But the brightness gamma that we observed is in fact confined to the region 30 Doradus, tells Jürgen Knödlseder. This reinforces the finding that the regions are forming massive stars that are the source of cosmic rays, but we do not yet know how to explain that they can not escape from these regions accelerator. Assumptions envisaged: either the magnetic field near 30 Doradus may retain the shelf in the area or the cosmic rays have been accelerated recently and have not yet had time to escape the region of acceleration. We have proposed a hypothesis of genesis of stars unlike that of the gravitational collapse which allows to explain exactly WHY in the incipient stages of stars, they produce their own elements and must NECESSARILY emit very high energy particles. Pending unchangement paradigm of official science, we are pleased to see that it approaches the understanding of the phenomenon of cosmic rays, it "heats" in a way, waited to "burn".

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