What you are seeing in the photo and the video after the jump is a demonstration by the Universite Paris Diderot at a science fair. This is the Mag Surf, and it makes our Back to the Future II hoverboard dream a reality. The trick is that the super-cold liquid nitrogen in this board makes it superconductive, which means that it repels the magnetic field on the track. With one little push, this hoverboarder, for lack of a better word is floating across the room

> Today’s the day we’ve been anticipating for months: iPhone 4S launch day. Apple fans hit retailers in droves to get their hands on the new handset, braving wind, rain and, perhaps most dangerously of all, other Apple aficionados. The iPhone 4S has shown phenomenally strong pre-order numbers , and by the looks of it, first-day sales won’t be too shabby either (some estimates are pegging sales of over 4 million for this weekend alone). Some lucky German folks who pre-ordered the phone received their units several days early

> You knew it’d be coming soon, and here it is: iFixit’s iPhone 4S teardown . All its glorious parts, laid out for your eyes to behold. Thanks to iFixit’s director of technical communication Miroslav Djuric, we were given permission to repost their entire teardown, so here it is. Unsurprisingly, taking it apart is a similar process to disassembling the iPhone 4, but the 4S features an improved battery, the same vibrator motor as in the Verizon iPhone 4 and an upgraded chipset

> > View all There are still a few things film cameras do that digital cameras don’t. One of those is double-exposures, something easy with every film SLR, and all but impossible in digital without digging into Photoshop.

I’ve tried out Jabra products before, and they are pretty famous for their Bluetooth headsets. You can’t see this in the image, but their new Jabra SPORT is like two Bluetooth headsets connected together for a Bluetooth stereo headset.