Science
Get flash to fully experience Pearltrees
The Hindu : Health : Breakthrough: sensors that can convert thoughts into speech - The Hindu: Mobile Edition
The breakthrough, which is up to 90 percent accurate, will be a boon for paralysed patients who cannot speak and could help read anyone’s thoughts ultimately, reports the Telegraph. “We were beside ourselves with excitement when it started working,” said Prof Bradley Greger, bioengineer at the Utah University who led the project.Melting steel in a solar oven (aka solar concentrator) isn't new or unique, but it's always cool to see and a good reminder of just how much energy is hitting the sunny side of the planet at any moment. The video below shows a short exerpt of James May's " Big Ideas " series (James is better known for the Top Gear show), and they start by cooking, er, burning a sausage, and then they melt a steel plate.
Melting Steel With Only the Sun (Video) : TreeHugger
(CBS) - Want to watch a cool video and learn something today at the same time?
Geek Out: "Dark matter" explained through animation - The Feed - CBS News
What you burn
Next: What comes out Up: The Rubber Bag Previous: What goes in ``What you burn'' is the number of calories your body uses to provide the energy for everything you do, from heartbeats and breathing to running a marathon. The daily calorie requirement varies quite a bit from person to person depending on size, shape, basic metabolic rate, and degree of physical activity.
Some cells are visible to the unaided eye The smallest objects that the unaided human eye can see are about 0.1 mm long.
Cell Size and Scale
At roughly minus 460°F, absolute zero is abysmally cold, yet at least we can imagine it. Being only a few hundred degrees below zero, it's in the realm of something we can put our minds around.
NOVA | A Sense of Scale: Absolute Zero
Image via YouTube video An ingenious invention by an engineer in Brazil has made an enormous difference in his town. Simply placing a bottle of water in a hole in the ceiling can light up a room with the same brightness as a 50-watt light bulb!
DIY Skylights From Used Water Bottles Replace 50-Watt Bulbs : TreeHugger
The above map of the world, drawn by Facebook data structuring intern Paul Butler using connections between 10 million Facebook friends ( full-size link ), is interesting enough in itself until you realize that all of the country borders are entirely drawn using Facebook friend connections too.
Map of the World Drawn Entirely Using Facebook Connections | Geekosystem
Aerogel: See-Through, Strong as Steel & Ligher than Air | Designs & Ideas on Dornob
Despite its incredibly low density, aerogel is one of the most powerful materials on the planet.
First 3D Map of the Brain’s Connections – GEARFUSE
We knew anatomy could be gorgeous , but this is beyond anything else we’ve ever seen, and it’s guaranteed to be something you haven’t seen, being the first 3D image of a brain’s connections . Van Wedeen, a Harvard radiology professor, is awestruck: “We’ve never really seen the brain – it’s been hiding in plain sight.” Conventional scanning has offered us a crude glimpse, but scientists such as Wedeen aim to produce the first ever three-dimensional map of all its neurons.// Provide alternate content for browsers that do not support scripting // or for those that have scripting disabled. If you can not see the animation, you do not have the proper plugin.
innerSuper
The world's smallest guitar is 10 micrometers long -- about the size of a single cell -- with six strings each about 50 nanometers, or 100 atoms, wide. Made by Cornell University researchers from crystalline silicon, it demonstrates a new technology for a new generation of electromechanical devices.