

|  
         | 
    
|  
         | 
    
|  
          
          freeze-frame showing sinusoidal form 
       | 
    

|  
          
          light traveling to the right 
       | 
    
|  
         | 
    
|  
         | 
    
|  
         | 
    
|  
         | 
    
|  
          
          light coming at you 
       | 
    


|  
         unpolarized 
          light  
       |