Horizontal road signs: the image is very elongated, so that it can be seen rightly, as in ...
Horizontal road signs: the image is very elongated, so that it can be seen rightly, as in ...
The rectangular table appears in the photo as a trapezium. Image used in the number 2 of t...
Vertical road signs: the same image is elongated when reproduced in a horizontal road sign...
Horizontal road signs: the image is very elongated, so that it can be seen rightly, as in ...
In a central projection lengths aren’t preserved, nor the ratios between the lengths of ...
The skittles are not placed at equal distance, and so they appear in this photo. On the co...
The skittles are placed at equal distance, and so they appear in this photo. On the contra...
A courtyard of the Ca' Granda, in Milan. The columns of the arcade are placed at equal dis...
A courtyard of Ca’ Granda, in Milan. The columns of the arcade and those of the upper fl...
