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[personal profile] fflo
I bet a million dollars I'm the first to write a blog post by that title.

Auxetic materials have negative Poisson ratio, which means when you stretch 'em, unlike a rubber band, they get thicker.  Sketches of structures that do that are cool to look at.  Like rug patterns or chunks of Escher drawings or cool internet wallpaper imagery.  Here's a gif (thanks to Joseph N. Grima of the University of Malta) that shows a way it works, if you're wondering and having trouble imagining:


Apparently there are YouTube videos of auxetic foam, but I didn't go that far down the rabbithole.
 
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fflo

Hello.

CURRENTLY FEATURING
the
Postcard of the Day

(a feature involving a postcard on a day)

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For another postcard thing, see
my old postcard poems tumblr or
its handy archive.

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I'm currently double-posting here & at livejournal. Add me and let me know who you are, and we can read each other's protected posts.

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"What was once thought cannot be unthought."

-- Möbius, The Physicists

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