2019-06-20

[public] 1.74M views, 55.4K likes, 1.45K dislikes audio only

Steve Mould

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My collaboration with Geoff is here:

https://youtu.be/AtOKYoJUhlA

Retroreflectors send light back in the direction it came from. They are useful in lots of way. But accidental retro reflectors need to be avoided sometimes.

Thanks to these amazing patrons on Patreon for supporting my channel:

Glenn Watson

Peter Turner

Joël van der Loo

Matthew Cocke

Mark Brouwer

Deneb

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https://stevemould.com/books

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