Shine a laser through the new £5 note
Steve Mould 1:54
301,793 views · 1,568 likes Watch on YouTube ↗
The Queen's face in the window of the new £5 note acts like a diffraction grating so that when you shine a laser through it projects this cool interference pattern.
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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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