Richard Perkins and Mike Tassey both worked in information technology in the U.S. Air Force before decamping to various cybersecurity consulting roles in and around the Department of Defense. But throughout their careers they've always considered themselves hackers at heart, which is why they spent the past two years developing the ultimate mobile hacking device: a drone aircraft that can discreetly break into Wi-Fi networks, emit jamming signals, and even pose as a cellphone tower to intercept communications from the ground.
Darren Samuelson had just taken his last photo of Manhattan when the police arrived. He and his father had been working from an empty dock across the Hudson River, and the authorities wanted to know why they were pointing a five-foot-tall, six foot-long, 70-pound folding contraption at the city. Samuelson pleaded that it was a camera, and that he was just a tourist.
Turn an iPad into an accessory that can frame, light, and store professional-looking photographs
By Jake LudingtonPosted 10.08.2011 at 3:43 pm 2 Comments
Photographers have been using Apple’s tablet for viewing and sharing photos since it came out, but the device can also be a useful tool for enhancing shoots in the studio and on location. With the right apps and, in some cases, a few additional accessories, the iPad can work as a remote for setting up shots, an easy-tomaneuver light source, a second screen for editing, and more.
When I’m building something weird—my pedal-powered Panzer, for instance—I have to pull together all sorts of obscure parts. Over the years I’ve noticed that I continually reuse some of them in project after project. here are the five that I can’t live (or work) without.
By Rick BrodiaPosted 10.08.2011 at 3:13 pm 2 Comments
One of the most significant changes might be in speed, says Avi Greengart, the research director for consumer devices at market-intelligence firm Current Analysis. Carriers are rolling out faster 4G LTE (Long-Term-Evolution) networks, and hardware manufacturers will soon produce smartphones with powerful multicore processors.
Running down the far-left column of the periodic table, the readily available alkali metals: lithium, sodium, potassium, rubidium and cesium—all generate potentially explosive hydrogen gas when they touch water. The strength with which they react with H2O goes up steadily in the order listed. Lithium just sizzles, whereas cesium explodes powerfully and instantly. You’d expect that to mean that cesium makes the biggest explosion, but it’s not the case.
When design student Markus Kayser wanted to test his sun-powered, sand-fed 3-D printer, he knew the gray skies outside his London apartment wouldn't do. So he shipped the 200-plus-pound contraption to Cairo, Egypt, flew there himself, and haggled with officials for two days to get it out of customs. A few small "tips" and 11 hours of driving later, he finally made it to the Sahara.
I relocated my shop recently, and packing it up reminded me that years of building have left me with an awful lot of tools. Many of them are very specialized—and in some cases, pretty obscure to the average DIYer—but they’re the ones I always reach for.
12-VOLT TEST LIGHT
A very simple tool that manages to take the guesswork out of jobs like debugging a vehicle electrical system. Ground the clip, and touch parts of the system with the tip. When the light comes on, you have power.
By Andrew RosenblumPosted 09.04.2011 at 6:08 pm 3 Comments
Powered by pneumatic solenoid valves and an Arduino microcontroller, a fire-breathing dragon will be appearing in Marin County, California, on October 31. The project began last year, when the now 17-year-old Sam DeRose and his 16-year-old friend Alex Jacobson teamed up with their fathers, Tony and David, to design a robotic version of the friendly dragon Saphira from the Eragon fantasy novel and movie.
A case in which the conventional wisdom is scientifically inaccurate
By Gordon Mah UngPosted 09.04.2011 at 5:48 pm 0 Comments
Laptop computers used to run on nickel-cadmium batteries, which experienced the "memory effect," where they lost capacity over time if recharged before they were drained. That's no longer the case. Newer laptops use lithium-ion or lithium-polymer batteries. Repeatedly discharging the battery to zero doesn't help a lithium-ion; in fact, it will probably shorten its overall life and capacity.