|  | 
         
          | Description: 
             This image shows a computer 
            simulation of a lightwave as it hits a shock wave to its left, shifts 
            to a higher frequency, and reflects back to the right. |   
          | Source: 
             Massachusetts Institute of Technology |   
          | Story:  Shock 
            waves tune light TRN June 4/11, 2003
 |   
          | TRN Categories: 
             Optical Computing, Optoelectronics 
            and Photonics; Materials Science and Engineering |   
          | Form: 
             Still |  |