Illusions - can you believe your eyes?

Well, can you? ~ Page 4

Antioch mosaic

Mosaic from the house of Menander at Antioch
Third century AD
This image was taken from "Optical Illusions and the Visual Arts" by Ronald G. Carraher and Jacqueline B. Thurston.
Reinhold Book Corporation, New York. 1966
Look at the trapezoids around the border, which of them seem to be raised and which are sunken?
Perhaps the image below will make things clearer?

Trapezoids

Color Concentrate Corporation logo

Color Concentrate Corporation logo
This logo was designed by Malcolm Grear
This image was taken from "Optical Illusions and the Visual Arts" by Ronald G. Carraher and Jacqueline B. Thurston.
Reinhold Book Corporation, New York. 1966
The logo looks as if it was based on the Kanizsa figures

Tri Lengths

Although it doesn't look like it, the distance between points A and B is the same as the distance between points B and C.

Line lengths

Which of the thin lines is longer? Sure?

Bent length

Are the horizontal lines the same length? Or not?

This page created 15th November 2004, last modified 19th October 2005


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