Nature has a good article about the High Frequency Active Auroral Research Program (HAARP), an ionospheric heater that became fully operational last July.
The High Frequency Active Auroral Research Program (HAARP) has been entwined with controversy since its birth. Originally envisioned as a way to facilitate communications with nuclear-armed submarines, HAARP took almost two decades to build and has incurred around US$250 million in construction and operating costs. It consists of 360 radio transmitters and 180 antennas, and covers some 14 hectares near the town of Gakona about 250 kilometres northeast of Anchorage.
With 3.6 megawatts of power at its command, HAARP is the most powerful ionospheric heater in the world. At its heart is a phased-array radar that emits radio waves that are partially absorbed between 100 kilometres and 350 kilometres in altitude, accelerating electrons there and 'heating' the ionosphere (see graphic, right). In effect, HAARP allows scientists to turn the ionosphere, the uppermost and one of the least understood regions of the atmosphere, into a natural laboratory.
Link (via the day they tried to kill me)
The scientist/artists in NASA’s Scientific Visualization Studio created this magnificent video to accompany a recent performance by the National Symphony Orchestra Pops of Claude Debussy’s “Clair de Lune.” From NASA: The visuals were composed like a nature documentary, with clean cuts and a mostly stationary virtual camera. The viewer follows the Sun throughout a lunar […]
Colored sand, a Chladni plate, and a little Bach make for a very soothing demonstration of cymatics.
PolyGlu is used by aid workers to force impurities in water to settle at the bottom of a container, making the water safer for drinking in areas where water is scarce or polluted.
Drones are undeniably cool, but not all of us have the Top Gun-level piloting skills required to fly them—unless you’re using TRNDlabs’ new Spectre Drone. Designed new and expert pilots alike, this drone is loaded with fly assist features to make piloting easy, all the while you explore using its built-in HD camera. It’s available in the […]
Whether you’re set to give the toast at your best friend’s wedding or a presentation at work, you’ll be relying on those public speaking lessons you slept through during high school. Scary thought, right? Thankfully, the Public Speaking Bundle is loaded with hacks, tips, and techniques that will get you speaking more naturally and with confidence, […]
The Adobe Creative Cloud suite is the foundation on which many creatives build their careers, but some of its programs, like Photoshop and InDesign, are notoriously complex, making it difficult for aspiring designers, photographers, and the like to break into their field. But, don’t get discouraged. The Pay What You Want: Adobe CC A-Z Lifetime Bundle […]