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Holograms That Don’t Change Color As You Move

April 8th, 2011 04:54 admin Leave a comment Go to comments

Science

An anonymous reader sends this quote from Wired: “By harnessing the power of tiny waves dancing in an electron sea, Japanese physicists have developed a novel way to project holograms that don’t change color when you move your head. ‘In a conventional hologram, if you change the angle, the color changes,’ said optical physicist Satoshi Kawata of Osaka University in Japan. ‘Our hologram shows natural color at any angle you observe.’ The researchers’ machine takes advantage of how beams of light trigger waves of activity in free electrons, unattached to any atom, arrayed on a metal surface. Called surface plasmons, these waves could be used to blast cancer cells and build ultra-fast computer processors. They also show up in medieval stained glass windows, where plasmons on flecks of gold suspended in the glass make the window change color as the sun sets.”

Source: Holograms That Don’t Change Color As You Move

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