Interactive Science exhibits, ideated and fabricated to inclucate and invigorate the young minds about Science !!

Persistence of vision

Here, you can see a picture of parrot and a picture of cage on either side of the plate. Rotate the handle slowly and now see the pictures.

What did you observe? 
You can see parrot within the cage.

The science behind it :
Retina of our eye holds any picture for 1/25th of a second. As the parrot and cage images fall continuously, the parrot appears to be within the cage.

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