Day Three Craft Week – Optical Illusion by Emma and Kerry from Science Sparks
This optical illusion lets you turn two pictures into one!
What you need:
- white cardboard
- pencils and colouring pens
- Cut out two circles from a sheet of white cardboard.
- Draw a birdcage on one circle and a parrot on the other.
- Glue or sellotape a pencil to the bottom of one circle, and stick the other circle to the other side. The picture of the bird and bird cage should be facing outwards.
- Hold the pencil between your palms and rub your hands to make the picture spin around.
The science bit
The bird should look like it is inside the cage when you spin the picture around. This is because the picture is spinning too fast for our brain and eyes to be able to separate the two.
This is the same concept used for making cartoons, still pictures are moved very quickly to create an illusion of movement.
Science Sparks was born out of Emma and Kerry’s love of science and their desire to make science with children fun. They post new experiments weekly and their creations such as ‘making slime’ or their ‘exploding volcano’ are bound to get the whole family involved!
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