" "Think of what you can do," Kaku says. "When you meet somebody, your contact lens will identify who that person is, print out their biography next to that person's image, and then translate, from Chinese into English or whatever." He compares it to the technology Arnold Schwarzenegger's Terminator character used to identify his opponents.
Stealth bombers will get a makeover in the future, Kaku says, when true invisibility technology becomes widespread. "I teach optics," he says, "and for years I used to teach the kids that invisibility was not possible. Well, I was wrong."
Scientists have discovered a new substance called "metamaterials," that allows light to bend around an object and re-form on the other side, like a stream around a boulder. "This is the real McCoy," Kaku says. "This is the Harry Potter invisibility cloak."
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