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RE: [ufodiscussion] Invisibility Shields Planned By Engineers

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  • Jahnets
    Do you really think this information would be out if they didn t have it already??? ... From: Light Eye [mailto:universal_heartbeat2012@yahoo.no] Sent:
    Message 1 of 2 , Mar 1, 2005
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      Do you really think this information would be out if they didn't have it

      -----Original Message-----
      From: Light Eye [mailto:universal_heartbeat2012@...]
      Sent: Tuesday, March 01, 2005 2:08 AM
      To: Global_Rumblings@...; SpeakIt@...;
      SkyOpen@yahoogroups.com; ufodiscussion@yahoogroups.com;
      Subject: [ufodiscussion] Invisibility Shields Planned By Engineers

      Dear Friends,


      Love and Light.


      Invisibility Shields Planned by Engineers
      James Owen in London
      for National Geographic News

      February 28, 2005

      In popular science fiction, the power of invisibility is readily apparent.
      Star Trek fans, for example, know that the devious Romulans could make their
      spaceships suddenly disappear.
      But is the idea really so implausible? Not according to new findings by
      scientists who say they have come up with a way to create cloaking device.

      Electronic engineers at the University of Pennsylvania in Philadelphia are
      researching a device they say could make objects "nearly invisible to an
      observer." The contrivance works by preventing light from bouncing off the
      surface of an object, causing the object to appear so small it all but
      The concept was reported today by the science news Web site news@....
      It says the proposed cloaking device would not require any peripheral
      attachments (such as antennas or computer networks) and would reduce
      visibility no matter what angle an object is viewed at.
      Sir John Pendry, a physicist at Imperial College, London, said the concept
      potentially holds several important applications "in stealth technology and
      While types of invisibility shielding have been developed before, the
      phenomenon described by Andrea Alú and Nader Engheta sounds like something
      that might have been witnessed from the bridge of science fiction's starship
      The concept is based on a "plasmonic cover," which is a means to prevent
      light from scattering. (It is light bouncing off an object that makes it
      visible to an observer).
      The cover would stop light from scattering by resonating at the same
      frequency as the light striking it. If such a device could cope with
      different wavelengths of electromagnetic radiation (including visible
      light), in theory, the object would vanish into thin air.
      Plasmonic Covers
      Alú and Engheta investigated experimental plasmonic covers that incorporated
      metals, such as gold and silver, to hide visible light.
      When light strikes a metallic material, waves of electrons, called plasmons,
      are generated. The engineers found that when the frequency of the light
      striking the material matched the frequency of the plasmons, the two
      frequencies act to cancel each other out.
      Under such conditions, the metallic object scattered only negligible amounts
      of light.
      The researchers' studies show that spherical and cylindrical objects coated
      with plasmonic shielding material produce very little light scattering.
      These objects, when hit by the right wavelength of light, were seen to
      become so small that they were almost invisible.
      The study is supported by the U.S. Defense Advanced Research Projects
      Agency, which researches and develops cutting edge military technology.
      Some experts note, however, that cloaking devices that could enable military
      vehicles and aircraft, let alone spaceships, to become completely invisible
      to the enemy are likely to remain elusive for the foreseeable future.
      John Pendry, the Imperial College physicist, said that light-shielding
      covers would have to be customized to match the properties of each and every
      object they hide.
      It would be still more difficult to devise shields that could cope with all
      wavelengths of the visible spectrum—from red to violet light—and not just a
      single color.
      Types of invisibility shielding previously proposed by scientists depend on
      advanced camouflage systems, rather than objects being made to look
      undetectably tiny. Such systems involve light sensors that create a mirror
      image of the background scene on the concealed object.
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      Despite the exciting possibilities raised by the new research, it may take
      us some time before science is able to catch up with those evasive Romulans.

      [Non-text portions of this message have been removed]

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