Ch 4 Wallace Shape Distortion

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Three types of shape distortion  foreshortening, elongation, and spatial distortion  
the photon in the exact center of the beam is called the  central ray  
foreshortening occurs when  the object is angled but the central ray remains perependicular to the film  
Elongation occurs when the object is _________to the film but the central ray is _________.  parallel, angled  


   

 
 

 
 

 
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