發送短信 : Ray-optics cloaking devices for large objects in incoherent natural light

  ______     ___      _____    __   __            
 /_   _//   / _ \\   /  ___||  \ \\/ //   ____    
 `-| |,-   | / \ || | // __     \ ` //   |    \\  
   | ||    | \_/ || | \\_\ ||    | ||    | [] ||  
   |_||     \___//   \____//     |_||    |  __//  
   `-`'     `---`     `---`      `-`'    |_|`-`   
                                         `-`