Getting kids to really focus on what exactly they are searching for, and then be able to further distill idea into a few key specific search terms is a skill that we must teach students, and we have to do it over and over again. We never question the vital importance of teaching literacy, but we have to be mindful that there are many kinds of “literacies”. An ever more important one that ALL teachers need to be aware of is digital literacy.
Like photographers assembling a portfolio of their best shots, astronomers have assembled a new, improved portrait of our deepest-ever view of the Universe. Called the eXtreme Deep Field, or XDF, the photo was assembled by combining ten years of NASA/ESA Hubble Space Telescope observations taken of a patch of sky within the original Hubble Ultra Deep Field. The XDF is a small fraction of the angular diameter of the full Moon.
The Hubble Ultra Deep Field is an image of a small area of space in the constellation of Fornax (The Furnace), created using Hubble Space Telescope data from 2003 and 2004. By collecting faint light over one million seconds of observation, the resulting image revealed thousands of galaxies, both nearby and very distant, making it the deepest image of the Universe ever taken at that time.
The new full-colour XDF image is even more sensitive than the original Hubble Ultra Deep Field image, thanks to the additional observations, and contains about 5500 galaxies, even within its smaller field of view. The faintest galaxies are one ten-billionth the brightness that the unaided human eye can see.
Windows XP, the zombie operating system that refuses to die, may be about to finally receive a killing blow to the head by the company that spawned it eleven years ago. So what will put XP out of its undead misery?
I want to start out by telling you two things about Albert Einstein that you probably didn’t know: 1) He was an avid sailor. 2) He didn’t know how to swim. Interesting trivia perhaps, but there’s a much more important connection.
Think it takes a big publishing house or an established author to make a best-seller? Think again. Two of the top ten best-selling e-books last week were self-published, On Dublin Street by Samantha Young and Down to You by M.
Want to learn or hone your skills in the art of Typography? Then check out these top online typography resources, where you'll find tons of advice and inspiration.
The web is a wonderful thing, literally brimming with resources and tutorials for people wanting to learn about the art of typography. But, sometimes, too much choice can be confusing, so we've picked five top sites that will really help you get to grips with it.
A three-way collaboration between Japan-based Rohm, Aquafairy, and Kyoto University has resulted in the development of a smartphone-charging fuel cell—a compact, high output, portable hydrogen powered fuel cell that can generate electricity by producing hydrogen. This is achieved through a chemical reaction between calcium hydride sheets and water. The fuel cell can generate five watt hours of electricity, to charge an average smartphone within two hours. The fuel cell will be promoted for a variety of uses, from charging a smartphone to serving as a 200-watt portable generator delivering backup power.
Rohm said the new hydrogen fuel cells use a solid that creates hydrogen by adding water, generating power through "hydro-synthesis." No harmful byproducts such as carbon dioxide or VOCs (Volatile Organic Compounds) are involved. The fuel cells can be disposed of as general waste. If the sheets are laminated and sealed, they last for twenty years, claimed a spokesman. Lithium ion batteries lose their charging ability in four to five years. Aquafairy had been developing a small fuel cell some years ago when they then started to exchange information with Rohm. Also, Rohm and Aquafairy have launched a joint project for a compact, lightweight 400-watt fuel cell system with Kinkei System.
"Bye, bye email...hello TagMyDoc" goes the byline to this innovative and very useful file sharing app. TagMyDoc could well be the future of document sharing and takes online communication one step further into the 21st Century.
"Does Bing deliver better search results than Google? Bing thinks so, and has launched a campaign trying to convince people that it’s right. It’s called “Bing It On,” and in addition to television ads, it includes the site BingItOn.com, where Microsoft is encouraging users to take its version of the Pepsi challenge – a blind comparison test between Bing results and Google results for whatever queries you wish to try out.
According to Bing, people “chose Bing web search results over Google nearly 2 to 1.” Notice they said “Bing Web search results over Google,” rather than just “Bing over Google”. More on that later".
Melting of white Arctic ice, currently at its lowest level in recent history, is causing more absorption. Thirty years ago there was typically about eight million square kilometres of ice left in the Arctic in the summer, and by 2007 that had halved, it had gone down to about four million, and this year it has gone down below that. The volume of ice in the summer is only a quarter of what it was 30 years ago and that's really the prelude to this final collapse.
The polar ice cap acts as a giant parasol, reflecting sunlight back into the atmosphere in what is known as the albedo effect. But white ice and snow reflect far more of the sun's energy than the open water that is replacing it as the ice melts. Instead of being reflected away from the Earth, this energy is absorbed, and contributes to warming.
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