Why do Shower Curtains Billow Inwards? - Monthly Mailbag #13

For his last ever Mailbag, Jon tries to get to the bottom of the mystery of why shower curtains seem to want to grab you when you have a shower.
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We've all been there. You're trying to have a nice warm shower to wake you up in the morning but the moment is ruined by the feel of the clammy, wet fabric of the shower curtain clinging to your side. Why does this happen?

There have been many suggestions on why this happens, including one that even won an Ig Nobel Prize. Is it the chimney effect or the Bernoulli's principle or something else entirely? Jon invites us to his bathroom to try to figure it all out.

For more on Dr Schmidt's shower curtain research, see:
https://web.archive.org/web/20020215213620/http://www.fluent.com/about/news/newsletters/01v10i2/a8.htm

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