Plastic Banknotes and lasers
Steve Mould 2:10
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Canadian bank notes are made of plastic. They have transparent sections, and the one shaped like a maple leaf is very special. It has a diffraction grating in it that projects an image of the denomination. Watch the video then try it yourself!
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Visit my blog here: http://stevemould.com
Follow me on twitter here: http://twitter.com/moulds
Buy nerdy maths things here: http://mathsgear.co.uk
Category (YouTube): Science & Technology
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