ScienceDirect.com | Search through over 10 million science, health, medical journal full text articles and books. Proceedings of the National Academy of Sciences.
Discoveries. Blogs. Sites. Mental Health. Growing On. Understanding Life. Politicizing. Environment. Ideas. ScienceNordic. Full Titanic wreck site mapped for first time - Technology & science - Science. SOUTH PORTLAND, Maine — Researchers have pieced together what's believed to be the first comprehensive map of the entire 3-by-5-mile (5-by-8-kilometer) Titanic debris field and hope it will provide new clues about what exactly happened the night 100 years ago when the superliner hit an iceberg, plunged to the bottom of the North Atlantic and became a legend.
Marks on the muddy ocean bottom suggest, for instance, that the stern rotated like a helicopter blade as the ship sank, rather than plunging straight down, researchers told The Associated Press. An expedition team used sonar imaging and more than 100,000 photos taken from underwater robots to create the map, which shows where hundreds of objects and pieces of the presumed-unsinkable vessel landed after striking an iceberg, killing more than 1,500 people.
"With the sonar map, it's like suddenly the entire room lit up and you can go from room to room with a magnifying glass and document it," he said.
Scirus - for scientific information - StumbleUpon. Stephen Wolfram: A New Kind of Science | Online - Table of Contents. Attacks paid for by big business are 'driving science into a dark era' | Science | The Observer. Most scientists, on achieving high office, keep their public remarks to the bland and reassuring. Last week Nina Fedoroff, the president of the American Association for the Advancement of Science (AAAS), broke ranks in a spectacular manner. She confessed that she was now "scared to death" by the anti-science movement that was spreading, uncontrolled, across the US and the rest of the western world. "We are sliding back into a dark era," she said. "And there seems little we can do about it.
I am profoundly depressed at just how difficult it has become merely to get a realistic conversation started on issues such as climate change or genetically modified organisms. " The remarks of Fedoroff, one of the world's most distinguished agricultural scientists, are all the more remarkable given their setting. But this year there has been a palpable chill to proceedings. "Our present crisis over the rise of anti-science has been coming for a long time and we should have seen it coming," adds Oreskes. Animation reveals the world's hidden equations.
MacGregor Campbell, contributor Although they don't actually exist in the physical world, our most powerful tools could be mathematical equations. They underlie much of modern technology, from radio to power generation, to photo compression and electronic musical instruments. In our latest animated explainer, we look at how the wave equation, Maxwell's equations and the Fourier transform came to rule the modern world. To find out more, read our full-length feature, "Seven equations that rule your world".
For more mathematics-related viewing check out our archive of One-Minute Mathvideos, or watch our previous animations to find out, for example, if supersymmetry could explain everything or why there is no such thing as empty space. Our choice of Maxwell's equations In our feature "Seven equations that rule your world", author Ian Stewart uses Maxwell's equation for electromagnetic waves propagating in a vacuum.
Interesting High-speed Video Clips. Beginnings. Technologies. Energy & Resources. Child creates molecule that could be used for energy storage or explosives. MIT’s photonic crystals lead towards nuclear batteries everywhere. Researchers at MIT have developed photonic crystals that, in as little as two years, could enable the use of hydrocarbon reactors in portable electronic devices, and nuclear power sources everywhere else. Photonic crystals are optical nanostructures that are tuned to specific wavelengths of light.
If you understand how semiconductors affect the motion of electrons (i.e. the bandgap only allows electrons with a certain energy level to pass through), photonic crystals are the optical equivalent. In this case, MIT has created infrared-absorbing photonic crystals using metals such as tungsten and titanium. Because of their metallic roots, these photonic crystals can operate at temperatures up to 1200C (2192F). You can probably see where this is going. As far as suitable heat sources go, they’re a dime a dozen. Looking towards the future, MIT’s photonic crystals could offer an alternative to photovoltaic panels or fuel cells. Read more at MIT.
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