Draw a circle on card paper using a compass (keep radius between 3 to 6 cm). Cut out the circle carefully.
Draw a series of arcs, spiral etc around the disc in 2 parallel circles using sketch pens. As shown in the image below.
Prepare & snap the circuit of Power + Motor. Connect gearless motor with Motor Element. Prepare a setup as below.
Make a hole in the center of the disc and push the shaft of the gearless motor in it. Turn the power element on and the disc will start spinning. Observe what you see on the disc.
Replace the discs one after the other and see the effects.
What do you see when the disc is moving?
Why do you think is this happening?
Can you connect this to the Peppa pig movement we discussed earlier?
The answer to the magic like phenomenon we witnessed is Optical Illusion.
What is Optical Illusion?
Optical illusions happen when our brain and eyes try to speak to each other but the interpretation gets a bit mixed-up.
Optical illusions use light, patterns, and color to create images that trick our brain.
How does Optical Illusion work?
When we look at an object, we are seeing the light that bounces off the object and into our eye. It takes less than a second for our brain to process this information. In that amount of time, optical illusions tell our brain to focus on parts of the image that aren’t really there.
To Explore Further:
Experiment further by drawing different patterns yourself.