Welcome to members of the Genii forums and readers of Wild About Harry!  Start reading about Houdini in Vancouver at part one of this week's Houdini series.

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03 January 2016

The magic inside Canadian plastic bills

From BuzzFeed:
Apparently, built into the transparent maple leaf design on our Canadian bills is a diffraction grating technology…

That when you shine a laser light through the maple leaf…

An encoded value of the bank note can be seen projected onto a blank surface.

Read more.



Watch Steve Mould explain it on YouTube:


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