Demonstration device for generating Cheshire cat optical illusion and demonstration method

Abstract

The invention discloses a demonstration device for generating a Cheshire cat optical illusion, comprising an experiment table, a plane mirror, an observation model, a background board, light-emitting diodes and a switch. The plane mirror, the background board and the switch are fixed on the experiment table, and the plane mirror can regulate an angle around a fixed shaft; the observation model can be fixed at any position of the experiment table through a sucking disc; the light-emitting diodes are arranged in a cycle of circular ring on the background board; the switch controls starting and stopping of the light-emitting diodes; and the ground color of the background board is white. The circle centers of circular rings formed by the plane mirror, the observation model and the light-emitting diodes are approximately arranged on the same horizontal line. When the demonstration device is used, an observer sits before the experiment table to enable the right eye to just see reflection of the background board and the left eye to see to about 60 cm at the front side to observe a puppy model at the same time; the switch is started, the light-emitting diodes, which form the circular ring sequentially, flash on and off along the counterclockwise direction, and after a while, the puppy model disappears from sight of the observer.

Description

1. Technical field [0001] The invention relates to a demonstration device and a demonstration method for demonstrating optical visual effects, belonging to the technical field of experimental demonstration devices. 2. Background technology [0002] British visual scientist Al Seckel (Al Seckel) reported a demonstration method of the optical vision phenomenon of "Cheshire Cat Optical Illusion" in "The Art Of Optical Illusions". The approach is to sit to the left of a white plane. Grab the bottom of a mirror with your left hand and point the mirror to the right. Turn the mirror away from your nose so that the reflective surface is facing the wall. Rotate the mirror so that your right eye just sees the reflection of the wall, while your left eye sees the face of your friend sitting about sixty centimeters in front of you. Hold the blackboard eraser in your right hand and move counterclockwise in front of the white plane. Your friend's face disappears from your eyes. The ab...

AI Technical Summary

Problems solved by technology

However, the above method needs to prepare a lot of props during the demonstration, and on the one hand, the above results are the results of human observation. It will be difficult to observe the results due to the difference in the degree of concentration of the observer's gaze, the movement of the blackboard eraser in hand, and the poor stability of holding a flat mirror.

On the other hand, only relying on people to exercise with a blackboard eraser and a flat mirror will cause fatigue to the human arms

So far, there is no specialized equipment and method for observing

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