A week after the the collapse of the I-35W Bridge, I made out to Minneapolis and trekked down with Publisher Joan Kelly and savvy guide and colleague Joe Hoopes to the adjacent Stone Arch Bridge. That’s the historic former railroad bridge turned pedestrian walkway spanning the Mississippi to link downtown Minneapolis with the east side of town. It’s about a quarter of mile upriver (north) from the I-35 Bridge and was full of gawkers like us. One could see the upturned substructure on the east side and I managed to get 200 yards closer by the Stone Arch Apartments to police line next to the east side of the bridge. Cars were still astrewn on the bridge and a hapless railway car was still crushed underneath that section of the span. A crane had been brought in in collapse roadway deck in the middle of the river.
I shot about 50 photos many of which I will shortly post. There are from some distance and the dam superstructure obscured the view of the west side spans roadway that collapsed mostly over land. I could not help but ponder the loss of life had it been 20 degrees below zero, had the Mississippi been running at full tilt in spring, had it happened at night, had there been no construction meaning the bridge would have been open to three lanes each way or had cars had been doing 70 over the bridge instead of being stuck in rush hour traffic. The loss of life is tragic but could have been much, much worse. Many area residents are reporting they felt the bridge sway sideways when they crossed it in the couple of weeks preceding the collapse. And finger pointing is beginning bigtime right up to the Minnestoa Gov. Tim Pawlenty.
Advertised as the "Most Powerful Tablet Under $100," the Kindle Fire HD 6 was too tempting for the team at iFixit to pass up. Join us to find out if inexpensive means cheap, irreparable, or just down right economical. It's teardown time!
The increased adoption of wireless technology for mission-critical applications has revved up the global market for dynamic electronic general purpose (GP) test equipment. As the link between cloud networks and devices -- smartphones, tablets, and notebooks -- results in more complex devices under test, the demand for radio frequency test equipment is starting to intensify.
Much of the research on lithium-ion batteries is focused on how to make the batteries charge more quickly and last longer than they currently do, work that would significantly improve the experience of mobile device users, as well EV and hybrid car drivers. Researchers in Singapore have come up with what seems like the best solution so far -- a battery that can recharge itself in mere minutes and has a potential lifespan of 20 years.
Some humanoid walking robots are also good at running, balancing, and coordinated movements in group settings. Several of our sports robots have won regional or worldwide acclaim in the RoboCup soccer World Cup, or FIRST Robotics competitions. Others include the world's first hockey-playing robot and a trash-talking Scrabble player.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.