background preloader

Planétarium - Carte des étoiles interactive et ciel virtuel

Planétarium - Carte des étoiles interactive et ciel virtuel

OpenStreetMap Where am I? Welcome to OpenStreetMap! OpenStreetMap is a map of the world, created by people like you and free to use under an open license. New Quasiparticles Found Scientists from the Weizmann Institute of Science in Israel have demonstrated, for the first time, the existence of quasiparticles with one quarter the charge of an electron. Quasiparticles are formed from the interactions of multi-particle systems, and act effectively as independent particles. Quasiparticles are known for having a fraction of the charge of an electron, but until now all the quasiparticles that were discovered had an odd denominator. The special attribute of an even denominator in the recently discovered quasiparticles may be the first step towards powerful and stable quantum computers. In order to create quasiparticles the researchers had to confine electrons to a two-dimensional layer inside a semiconductor which in turn was cooled to a fraction of a degree above absolute zero, then exposed to a strong magnetic field that was perpendicular to the layer.

Crossword puzzle maker The Crossword puzzle maker is used to make simple crossword puzzles. It turns out that good crossword puzzles of the type found in newspapers are fairly hard to generate, and require a pool of lots of words, not all of which are used. This program puts all of the words you specify (no more, no less) into a simple crossword puzzle. SCHOPENHAUER'S 38 STRATAGEMS, OR 38 WAYS TO WIN AN ARGUMENT Arthur Schopenhauer (1788-1860), was a brilliant German philosopher. These 38 Stratagems are excerpts from "The Art of Controversy", first translated into English and published in 1896. Carry your opponent's proposition beyond its natural limits; exaggerate it. The more general your opponent's statement becomes, the more objections you can find against it. The more restricted and narrow his or her propositions remain, the easier they are to defend by him or her.

Brief Answers to Cosmic Questions Structure of the Universe Does the Universe have an edge, beyond which there is nothing? Are the galaxies arranged on the surface of a sphere? Why can't we see the whole universe? Does the term "universe" refer to space, or to the matter in it, or to both? Evolution of the Universe Did the Universe expand from a point? If so, doesn't the universe have to have an edge? Countries Skip to main content Countries Browse by country for overviews, news, analysis and maps on crises and disasters. A red dot beside the country name denotes an ongoing crisis or disaster. Updates by country (last 72 hours)

Breakthrough in Thin-Film Solar Cells Scientists at Johannes Gutenberg University Mainz (JGU) in Germany have recently reported a breakthrough in their search for more efficient thin-film solar cells. Such cells could help create better solar receptors, improving both capacity and utilization of current devices – resulting in more realistically efficient sources for alternative energy. The new study shows that the new potential efficiency is 30%, a significant increase in comparison to contemporary cells that have only about 20% efficiency. Using computer simulations, the scientists investigated ways to improve the performance of CIGS thin-film solar cells; these are important since they are only a few micrometers thick, and offer savings on material and manufacturing costs. Currently, CIGS thin-film solar cells absorb the sunlight through a thin layer made of copper, indium, gallium, selenium, and sulfur.

I migliori 100 Web Tools Classroom 2.0 scelti da voi The Wordle of this list! (Click image to enlarge) One of the most popular posts on Edudemic in 2010 was The 35 Best Web 2.0 Classroom Tools Chosen By You and I felt it might be time for an update to that list for 2011. Top 10 Best Novels of the Last 20 Years Books The ten novels on this list all substantiate the belief that books are the most elastic, introspective, human and entertaining form of media that exist. Not movies, not music, not art, not the theatre. A famous author once said that novels are the best way for two human beings to connect with each other. I believe this, and I believe that people who do not find pleasure in words have never had the opportunity to read one of the great novels.

Beautiful Planet - Oh I so want to go to the ISS! Indian Ocean Maldives “The sunny side of life” is a catchphrase used to attract tourists to the Maldive Islands. Well it certainly looks heavenly from the ISS. Time to order a large drink, you know, one with a lot of fruit and a little umbrella, then stretch out on a hammock and just enjoy life, watching what I can only imagine a marvelous sunset. Image Credit: NASA/ESA, Russian Federal Space Agency, Maxim Suraeva and Oleg Kotov

Interactive Map of Europe, Europe Map with Countries and Seas Europe is the second smallest of the inhabited continents. It is a part of the Eurasian land mass that includes Europe, Asia, Asia Minor and the Arabian Peninsula. As many large islands east and south of Asia are usually included in Asia, the Eurasian land mass extends from Iceland to New Guinea, from the Atlantic to the Pacific and from the Arctic to the Indian Oceans. Black Holes in Star Clusters Stir Time and Space Astronomers at the University of Bonn’s Argelander-Institut fuer Astronomie have recently published a study that suggests novel techniques to simulate the movement of black holes in star clusters, providing a new method to detect the merging of black holes. Their idea might be the basis for a future field called “gravitational wave astronomy”. The common premise is that most stars are born in clusters, evidently forming the massive star sets we call galaxies.

Caratteristiche - Stupeflix Each beautiful video theme will give a distinct look & feel to your video, just add your photos, videos, text and music! Upload photos and videos from your computer, or import directly from Facebook, Instagram, Dropbox, Flickr or Picasa. Use your words! Tell your story with Title Slides between photos, or Captions on top of photos and maps. Choose one of the 130 licensed music tracks in our Music Lounge, or just upload your own! Don't just say where, show it! Family tree of the Greek gods Key: The essential Olympians' names are given in bold font. See also List of Greek mythological figures Notes External links Media related to Family trees of Greek mythology at Wikimedia Commons

Related:  france scienceSelf-EducationBrainful sitesExiting links for boring daysspace etc.AstronomyScientifictheballsofsatancosmosvegalukeWeather and study of itRandomMoremapsScienceSciences de la Vie et de la TerreL'AstronomieastronomySciences