(4) Solids which transform into different shapes

When we observe a plane, it is mostly in many cases to understand the details of the whole plane at a speed similar to that of a high speed shutter of a camera. It is all the more difficult when we observe a shape which somehow has an inscrutable feeling. 

In that case, we move our view point slowly and smoothly from our initial point of view. Then, we feel an illusion when the other edge has an unreasonable shape which could not be expected upon initial observation of the shape. In this case, methods for different space recognition are often required.
 
 


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Figure 373: Strangeness of of shapes of both cutting cross-sections, by Toshihiro Katayama.
Figure 374: "A Somewhat Difficult Wooden Puzzle", by Mitsumasa Yasuno.
Figure 375: Composition of columns and corner pillars.
Figure 376: Prototype design for a book jacket using impossible diagrams.


 

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