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The original picture is in Singapore Science Centre
The picture can be seen upside down. I am wondering how would the do that? Are there any conditions or methods to make the picture can be seen upside down? .1.jpg)
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Another cool technique is in NHK TV studio(Japan).Every one is given a magnetic board.It’s just have black and white strips.But when people look in a mirror, they will see a characters(in 3D form) in every magnetic card.
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