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REMEMBER: WATT IS THE UNIT OF POWER By   Dave Gershgorn   Posted  Yesterday at 9:47pm The Asahi Shimbun The LFEX petawatt laser. Researchers at Osaka University  are claiming  to have fired the most powerful laser in the world. The 2-petawatt (two quadrillion watt) pulse lasted just one picosecond (a trillionth of a second). For a rough comparison, in 2013, a 50 kilowatt (50,000 watt) laser  shot down a drone two kilometers away . Osaka's mega-powerful laser is called  LFEX , or Laser for Fast Ignition Experiments, and measures more than 300 feet long. While two petawatts is a formidable amount of power, the idea of a petawatt laser isn’t new. The United States has a few of their own, notably a  one-petawatt laser  at the University of Texas at Austin. Michael Donovan, associate director for the Texas Petawatt, says that it’s important to remember when talking about lasers of this size that, while the power ...

 A Magic Pen with Bluetooth Technology handwriting int o  digital format   with touchscreen and suitable apps. But if you want to achieve it on a   sheet of   traditional paper, maybe Recorder, a   magic pen   with   Bluetooth technology   will help you in the near feature. Recorder is an innovative and practical  design concept  designed by seven designers, including Xia Xiaoqian, Renming Jun, Han Ricoeur and more. As we can see from the images, Recorder looks like a common pen, but don’t be cheated by the appearance, in fact, the concept pen features an integrated laser locater on its tip, which can be used to track your handwriting, and the built-in chip can record and convert the handwritten info on traditional paper into digital files. Moreover, the built-in Bluetooth technology allows you to conveniently connect the magic pen  with your tablet or computer for transmission. Of course, you can also us...