(iv) Illusion on concentrating lines

Lines concentrating toward one point have a structure of perspective. Therefore, if shapes of the same size are put on these lines, it seems that the shapes closer to the concentration point look larger (Figs. 336-338).

The forward most person was described to be tallest, but she doesn' look so as shown in Figure 339. In Figure 340, AB and AC were drawn the same size, but AB looks longer.
 
 


336
337 		 
339

 

338 		 
340

 

Figure 336: The distance between the two left points looks larger than that between the two right points.
Figure 337: The acute angle sandwiched by a smaller angle looks larger.
Figure 338: Though the sizes of the three cubes are equal, the right cube looks biggest.
Figure 339: Illusion occurring from ignoring perspective (Although two people in the front are
                       drawn taller, they do not necessarily look so).
Figure 340: It seems AB > AC, but they are actually the same length.


 

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