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Johnathan Fletcher

BBC News - US military develops 'bigger bang' explosive material - 0 views

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    "Clifford Bedford, a researcher involved in the development of the new material, explained its advantages over existing weapons. "In the case of a steel missile you explosively launch it, it goes through the target and all the kinetic energy is dissipated into the target," he said. "With the reactive material missile, you have the same explosive launch - however, it disintegrates within the target and liberates chemical energy, and this chemical and kinetic energy combined gives you the enhanced effect.""
Johnathan Fletcher

Breakthrough in developing super-material graphene - 0 views

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    "A collaborative research project has brought the world a step closer to producing a new material on which future nanotechnology could be based. Researchers across Europe, including the UK's National Physical Laboratory (NPL), have demonstrated how an incredible material, graphene, could hold the key to the future of high-speed electronics, such as micro-chips and touchscreen technology."
Johnathan Fletcher

BBC News - Long-lasting all-weather night-vision material unveiled - 0 views

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    "A US-based team of scientists claims to have invented a material that releases over two weeks of night-vision light after just one minute's exposure to the sun. The University of Georgia team says the near-infrared emitting substance could offer the military "secret" illumination at nighttime."
Johnathan Fletcher

BBC News - Metal undergoes novel transition under extreme pressure - 1 views

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    "A team at the Carnegie Institution for Science subjected the material to pressures up to 1.4 million times atmospheric pressure at sea level, and temperatures up to 2,200C. They found that it pulls off the trick of changing its electrical properties without any shifting of shape - it can be an insulator or conductor depending just on temperature and pressure. Combined with computer simulations of just what was going on with the material's electrons, the group claim that the results show a new type of metallisation. "At high temperatures, the atoms in iron oxide crystals are arranged with the same structure as common table salt," said Ronald Cohen, a co-author of the study. "Just like table salt, iron oxide at ambient conditions is a good insulator-it does not conduct electricity.""
Johnathan Fletcher

YouTube - Earthship Design Principles - 0 views

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    Earthship Biotecture creates buildings that... * Heat and cool themselves naturally via solar/thermal dynamics * Collect their own power from the sun and wind * Harvest their own water from rain and snow melt * Contain and treat their own sewage on site * Produce food in significant quantities * Utilize materials that are byproducts of modern society like cans, bottles and tires
Johnathan Fletcher

CBC News - Technology & Science - Teens' styrofoam study wins water prize - 0 views

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    "The two developed a technique that uses bacteria to break down the foam plastic used in many disposable cups, fast-food containers and packing materials."
Johnathan Fletcher

Engineers achieve world record with high-speed graphene transistors - 0 views

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    "Graphene, a one-atom-thick layer of graphitic carbon, has great potential to make electronic devices such as radios, computers and phones faster and smaller. But its unique properties have also led to difficulties in integrating the material into such devices."
Johnathan Fletcher

Magnus Larsson: Turning dunes into architecture | Video on TED.com - 0 views

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    Architecture student Magnus Larsson details his bold plan to transform the harsh Sahara desert using bacteria and a surprising construction material: the sand itself.
Johnathan Fletcher

BBC News - 'Lifeless' prion proteins are 'capable of evolution' - 0 views

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    Scientists have shown for the first time that "lifeless" prion proteins, devoid of all genetic material, can evolve just like higher forms of life.
Johnathan Fletcher

YouTube - Atom HQ - BBC - 0 views

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    In this three-part documentary series, Professor Jim Al-Khalili tells the story of one of the greatest scientific discoveries ever: that the material world is made up of atoms.
Johnathan Fletcher

Scirus - for scientific information - 0 views

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    "Scirus is the most comprehensive scientific research tool on the web. With over 410 million scientific items indexed at last count, it allows researchers to search for not only journal content but also scientists' homepages, courseware, pre-print server material, patents and institutional repository and website information. "
Johnathan Fletcher

BBC NEWS | Technology | 'Magnetic electricity' discovered - 0 views

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    In September this year, two research groups independently reported the existence of monopoles - "particles" which carry an overall magnetic charge. But they exist only in the spin ice crystals. These crystals are made up of pyramids of charged atoms, or ions, arranged in such a way that when cooled to exceptionally low temperatures, the materials show tiny, discrete packets of magnetic charge.
Johnathan Fletcher

Make: Online: Make: Science Room Home - 0 views

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    "Greetings citizen scientists, budding biohackers, and backyard explorers! We think you'll find the Make: Science Room a fun and useful resource. We hope you'll use it as your DIY science classroom, virtual laboratory, and a place to share your projects, hacks, and laboratory tips with other amateur scientists. Your Make: Science Room host is Robert Bruce Thompson, author of Illustrated Guide to Home Chemistry Experiments: All Lab, No Lecture. (Make: Books, 2008) and Illustrated Guide to Forensics Investigations: Uncover Evidence in Your Home, Lab, or Basement (not yet published). We'll be drawing material from these titles first, but will soon branch out into biology, astrononmy, Earth sciences, and other disciplines."
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