The Elements Revealed: An Interactive Periodic Table In the October 2011 issue of Scientific American, we celebrate the International Year of Chemistry. Learn more about its impact on our daily lives in our Special Report. UPDATED: 06/18/2013 In honor of the 2013 Lindau meeting, which focuses on chemistry, we have updated our interactive periodic table with links to Nature Chemistry's In Your Element essay series. Each essay tells the story of a particular element, often describing its discovery, history and eventual uses. Main Sources & More to Explore: The Poisoner’s Handbook: Murder and the Birth of Forensic Medicine in Jazz Age New York.
Brian Cox and Simon Pegg explain why atoms have so much empty space Thanks for posting that... that was pretty awesome! I kind of disagree about his "woo" statements. He opens up with we can't remain static in our knowledge of science or we will essentially become obsolete. Ultrafast Camera Records at Speed of Light Researchers at the Massachusetts Institute of Technology (M.I.T.) have developed an imaging system that can acquire visual data at a rate of one trillion exposures per second–fast enough to produce a slow-motion video of a burst of light traveling the length of a one-liter bottle, bouncing off the cap and reflecting back to the bottle’s bottom. As Ramesh Raskar, an associate professor in M.I.T.’s Media Lab, explains in the video below, a high-speed camera can capture the image of a bullet mid-flight. The M.I.T. camera can capture the movement of photons, which travel about one million times faster than bullets. The researchers use a titanium-sapphire laser as a pulsed light source and direct the beam using mirrors to a plastic bottle that helps illuminate the light. Their camera consists of an array of 500 sensors, each triggered at a trillionth-of-a-second delay, Media Lab postdoctoral associate Andreas Velten says in the video.
Scientists create first free-standing 3-D cloak Researchers in the US have, for the first time, cloaked a three-dimensional object standing in free space, bringing the much-talked-about invisibility cloak one step closer to reality. Whilst previous studies have either been theoretical in nature or limited to the cloaking of two-dimensional objects, this study shows how ordinary objects can be cloaked in their natural environment in all directions and from all of an observer's positions. Published Jan. 26 in the Institute of Physics and German Physical Society's New Journal of Physics, the researchers used a method known as "plasmonic cloaking" to hide an 18-centimetre cylindrical tube from microwaves. Some of the most recent breakthroughs in the field of invisibility cloaking have focussed on using transformation-based metamaterials -- inhomogeneous, human-made materials that have the ability to bend light around objects -- however, this new approach uses a different type of artificial material -- plasmonic metamaterials.
Sleep musicalization - Perceive your sleep as a unique musical experience! Perceive your sleep as a unique musical experience! Sleep musicalization is a novel way of perceiving and experiencing sleep measurement data. The goal is to help users understand and analyze their sleeping patterns and eventually improve their sleep. How the universe appeared from nothing MacGregor Campbell, consultant There's no such thing as a free lunch, or so the saying goes, but that may not be true on the grandest, cosmic scale. Many physicists now believe that the universe arose out of nothingness during the Big Bang which means that nothing must have somehow turned into something. How could that be possible? Contact lenses upgrade your eyes to enable true immersive VR [From DVICE, where the story includes additional images and a video] Contact lenses upgrade your eyes to enable true immersive VR By Evan Ackerman Jan 17, 2012 Our eyes are just not built for the future.
Why there is no such thing as empty space MacGregor Campbell, contributor Could the universe have appeared out of nothing? In a previous video, we argued that typical notions of 'something' and 'nothing' don't really make sense according to modern physics. Société Deuxième annonce un plan de mine Astéroïdes: Nouvelles Découverte Newly formed Deep Space Industries unveiled an ambitious plan on Tuesday to extract raw materials from nearby asteroids and turn it into fuel and spare parts for satellites. It may sound like science fiction, but the company’s chief technology officer, John Mankins, who previously worked at NASA’s Jet Propulsion Laboratory in Pasadena, Calif., said there’s really nothing magical about it. “The technology may not have been used in space for the exact purposes that we propose, but the fundamental technologies are really at hand,” Mankins said at a press conference at the Museum of Flying in Santa Monica, Calif., to announce the new venture. PICTURES: Top 10 Ways to Stop an Asteroid
Why Does Our Universe Have Three Dimensions? Why does our universe look the way it does? In particular, why do we only experience three spatial dimensions in our universe, when superstring theory, for instance, claims that there are ten dimensions — nine spatial dimensions and a tenth dimension of time? Japanese scientists think they may have an explanation for how a three-dimensional universe emerged from the original nine dimensions of space. They describe their new supercomputer calculations simulating the birth of our universe in a forthcoming paper in Physical Review Letters. Before we delve into the mind-bending specifics, it’s helpful to have a bit of background.
One-Minute Physics: How wings really create lift Sandrine Ceurstemont, editor, New Scientist TV How does air flow across a wing to generate lift? Since a wing's top surface is curved, it covers a greater distance compared to the flatter bottom edge. A common explanation is that air moves faster over the top so that it reaches the end of the wing at the same time as the bottom flow, lowering the pressure on the top surface. But this pressure explanation is just a myth, explains Holger Babinsky, professor of aerodynamics at the University of Cambridge. In an attempt to debunk the misconception, he filmed pulses of smoke flowing around an aerofoil.
Wacky Physics: Why Do Particles Have Flavors? In this regular series, LiveScience explores some of the wildest, weirdest parts of our universe, from quantum oddities to hidden dimensions. The building blocks of matter — fundamental particles — come in many more flavors than the basic few that make up the atoms we're familiar with. Flavor is the name scientists give to different versions of the same type of particle. For instance, quarks (which make up the protons and neutrons inside atoms) come in six flavors: up, down, top, bottom, strange and charm. Particles called leptons, a category that includes electrons, also come in six flavors, each with a different mass. But physicists are baffled as to why flavors exist at all, and why each flavor has different characteristics.
The Physics of Angry Birds You know the game, I know you know. Angry Birds. I have an attraction to games like this. You can play for just a little bit at a time (like that) and each time you shoot, you could get a slightly different result.