This is an optical illusion toy called a thaumatrope! It has a different picture on each side and, when spun around really quickly, allows us to see both of those images at the same time 😲🤯
How? It's all thanks to persistence of vision! 👀
Download a FREE copy of the thaumatrope designs here (www.sillyscien...)
If you want to learn more about persistence of vision, check out this video on the Newton Disc ( • Mixing Colours to make... )
And if you're interested in reading a full copy of the old pages I found in the attic, check it our here: archive.org/de...
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*Disclaimer*
If you do choose to do these activities, you agree to do so at your own risk (please refer to this page www.sillyscien....
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