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added by:sferaa
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View of the solar system showing the locations of all the asteroids starting in 1980, as asteroids are discovered they are added to the map and highlighted white so you can pick out the new ones. The final colour of an asteroids indicates how closely it comes to the inner solar system. Earth Crossers are Red Earth Approachers (Perihelion less than 1.3AU) are Yellow All Others are Green Notice now the pattern of discovery follows the Earth around its orbit, most discoveries are made in the region directly opposite the Sun. You'll also notice some clusters of discoveries on the line between Earth and Jupiter, these are the result of surveys looking for Jovian moons. Similar clusters of discoveries can be tied to the other outer planets, but those are not visible in this video. As the video moves into the mid 1990's we see much higher discovery rates as automated sky scanning systems come online. Most of the surveys are imaging the sky directly opposite the sun and you'll see a region of high discovery rates aligned in this manner. At the beginning of 2010 a new discovery pattern becomes evident, with discovery zones in a line perpendicular to the Sun-Earth vector. These new observations are the result of the WISE (Widefield Infrared Survey Explorer) which is a space mission that's tasked with imaging the entire sky in infrared wavelengths. Currently we have observed over half a million minor planets, and the discovery rates snow no sign that we're running out of undiscovered objects. Orbital elements were taken from the 'astorb.dat' data created by Ted Bowell and associates at http://www.naic.edu/~nolan/astorb.html Music is 'Transgenic' by Trifonic: http://www.amazon.com/Emergence-Trifonic/dp/B0013MTJUQ/ Check out todays asteroid map at http://szyzyg.arm.ac.uk/~spm/neo_map.html Quite a few journalists, bloggers and tweeters are attributing this to NASA or Arecibo Observatory - while they do fine work they had nothing to do with this. If you write a story you can credit it to Scott Manley. Thanks for the Interest! 1000 comments Over a thousand tweets http://topsy.com/trackback?url=http%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DS_d-gs0WoUw

added by:arbore
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Video from www.kaninhop.dk with the winners of the Danish Championships 2010 in Rabbit Hopping. The winners: High jump: Emilie Andersen and Sommerly's Ch. Cool Cocio. Elite straight: Betina Miller and Gaunbys SCh. Mr. Playboy Bunny. Long jump: Louise Lund and Gaunby's Multi Medie "Medie". Elite crooked: Lisette Kongerslev and Hønsehusets Too Nice To Say No. See more at: http://www.kaninhop.dk/ http://dm2010.kaninhop.dk/

added by:sferaa
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http://mariecurie.biz/p/showthread.php?t=15921 The Taylor Diffusion cloud chamber is a simple piece of equipment will clearly show Which alpha particle tracks. It is cheap enough to allow students, in groups, the opportunity to do their own Experiment. Students are fascinated by the tracks and watch them for a long time. This is something to be enjoyed and not hurried. You can do this as a demonstration. However, students will prefer waiting for Apparatus to produce their own results rather than Yours. Also, if you have Eight to ten groups of students, the each with their own cloud chambers, you are more likely to get some results sooner or later