Schroeder Stairs (Schröder's staircase) Optical Illusion
Channel: Kids Fun Science
Date: 04/08/2022

Schroeder Stairs (Schröder's staircase) Optical Illusion
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Chapter
0:00 Kids Fun Science intro
0:30 Experiment 1st time
0:52 Experiment 2nd time

Here is a jpeg that you can print out if you don't want to draw it.
https://www.pinterest.com/pin/542472717627993734

Schroeder stairs (Schröder's stairs) is an optical illusion which is a two-dimensional drawing which may be perceived either as a drawing of a staircase leading from left to right downwards or the same staircase only turned upside down, a classical example of perspective reversal in psychology of perception. It is named after the German natural scientist Heinrich G. F. Schröder, who published it in 1858. From Wikipedia, the free encyclopedia

This drawing may be variously described as an "reversible figure". The reversible figure refers to the phenomenon that after some time of staring at the figure the perception of its orientation becomes involuntarily reversed. 

Schroeder stairs can be perceived in two ways, depending on whether the viewer considers A or B to be the closer wall.

INSTRUCTIONS
Notice how the image can appear to be stairs running from top left to bottom right, or the an upside down version of that image. To experience the different ways the image can look, focus one at a time on the panels labeled 'A' and 'B' and try to see it as being in the foreground. 

EFFECT
You should experience a switch between seeing the stairs running from top left to bottom right, or an upside down version of the stairs; in the former the A panel will appear to be in the foreground, and the B panel in the background, and in the latter the B panel will appear to be in the foreground, and the A panel in the background. The image will either change on its own, or you can blink after the image is turned up side down.

#Schroederstairs #Schroederillusion #Schroederopticalillusion