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    Japan Fires The World's Most Powerful Laser - Forum

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    Forum moderator: arya, dethalternate 
    Forum » untoten.reich » Science, Astronomy, Nature » Japan Fires The World's Most Powerful Laser
    Japan Fires The World's Most Powerful Laser
    dethalternateDate: Saturday, 01-August-2015, 10:21 PM | Message # 1
    -- dragon lord--
    Group: lords
    Messages: 3409
    Status: Offline
    Remember: watt is the unit of power
    By Dave Gershgorn posted Jul 28th, 2015 at 12:47pm

    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 output is immense, the energy used is actually very little.

    “The energy of the Texas Petawatt, 150 to 200 Joules, is about that in a cup of coffee or a very hard tennis serve,” Donovan said via email. ”It is the energy used by a 100 watt light bulb in 2 seconds.” Power is energy over time, and since one picosecond is a very small amount of time, the power output turns out to be immense.


    untotenawake
    Read more/full article/source - http://www.popsci.com/researc....l-laser


     
    Forum » untoten.reich » Science, Astronomy, Nature » Japan Fires The World's Most Powerful Laser
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