The Ozone Layer Is On The MendAn international agreement to phase out use of chemicals that damage the ozone layer appears to be working. A new report finds that ozone-depleting substances in the atmosphere are down by 10 to ... More >
Lasers Reveal Underground 'Super Henge'Near the prehistoric Stonehenge monument, archeologists have found the buried traces of a "super henge" more than 4,900 feet in circumference. That's about as big around as the Astrodome and ... More >
Rosetta Takes A SelfieThe Rosetta robotic space probe has sent back this amazing photo of itself, illuminated in the sun's light. More >
An App to Detect Emotions?Sometimes people are hard to read. Why not leave all that work to a computer? Perhaps you could use this experimental app that works in Google Glass. Aim Glass's camera at a person's face and ... More >
A DIY ExoskeletonYouTuber the Hacksmith has built himself a set of Elysium style robot arms. Powered by compressed air, the system lets him easily curl a 77 KG barbell made from steel and concrete blocks. More >
Of course, it wasn’t long before reality sank in. I’m not really part of this proverbial “we.” The rides are for NASA astronauts only, not for us mere mortals, fated to only walk on one planet for the rest of our lives. My excitement soon became mixed with a reinvigorated longing to explore the celestial frontier.
A team of twenty students at the Eindhoven University of Technology in the Netherlands entered the Bridgestone World Solar Challenge 2013, a six-day solar race across Australia’s Outback, in the new Michelin Cruiser Class. Practicality was paramount for these entries, though energy use, payload capacity, and speed counted as well. The question to answer, according to Jordy de Renet, one of Stella’s drivers, was, “Do you want it in your daily life? Would you want to take it to get groceries?”
You can build a lot of cool stuff with LEGO. It's also really painful to step on. But at Brickworld events, the skills and projects are taken to a whole new level. It might not be super useful to move balls endlessly around a track, but there shear variety and ingenuity of the methods are amazing.
Here's a refresher from middle school science class: An asteroid is a huge rock tumbling through the solar system, and that's pretty much all it looks like--a big rock. Meanwhile, a comet is a ball of ice and dust that has a long bright tail, which is caused by the Sun blasting that ice and dust off of the comet's surface as it zooms around.
Here's why it's so hard: Atoms can easily form solids, liquids, and gasses, because when they come into contact they push and pull on each other. That push and pull forms the underlying structure of all matter. Light particles, or photons, do not typically interact with one another, according to Dr. Andrew Houck, a professor of electrical engineering at Princeton and an author on the study. The trick of this research was forcing them to do just that.
As if it weren't hard enough already to imagine it in twos, physicists have entangled three photons with each other. Entanglement is a counterintuitive quantum physics phenomenon, in which a particle influences all the others with which it's entangled -- even if the particles are far apart. If one particle is in one state, for example, the others might be in the same state. In this case, however, each photon, which is a particle of light, had the same polarization -- either horizontal or vertical.
Check out this latest citizen-science project. It's a site where you can look at photos gathered by an Antarctic network of wildlife cameras and mark if there are penguins in the photos. In other weo you get to look at cute animals online and help environmental science! Sounds like a win-win to me.
In World War II, mighty bombers came equipped with gun barrels, manned by gunners at the ready to protect the plane from attacking fighters. The B-52 Stratofortress even came with a tail gun for self defense and last used it in combat over Vietnam in 1972. The change in fighter weapons from guns to missiles made tail guns obsolete, but now Lockheed and DARPA are bringing them back. As freakin’ lasers.