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Sometimes called caustics or free form lenses, these objects use clever maths to move light around to make images.
Check out my video about Penrose Unilluminable Room: https://youtu.be/x3VluzZTReE
Check out the company that made the lion lens and the fire mirror: https://rayform.ch
You can buy my books here:
https://stevemould.com/books
You can support me on Patreon and get access to the exclusive Discord:
https://www.patreon.com/stevemould
just like these amazing people:
Edward Unthank
Tim S Root
Pavel Dubov
Lizzy and Jack
Jeremy Cole
Brendan Williams
Alan Wilderland
Frank Hereford
Lukas Biewald
Damien Szerszinski
Marshall Fitzpatrick
Heather Liu
Grant Hay
John Zelinka
Paul Warelis
Matthew Cocke
Nathan Blubaugh
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Buy nerdy maths things: http://mathsgear.co.uk