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Old 08-11-2019, 05:15 PM
brujaja is offline
Join Date: Jul 2006
Location: the front of beyond
Posts: 4,199
Originally Posted by DSeid View Post
My first thoughts have to do with the viscosity and surface tension, but then I recalled the bit about why coffee spills form rings - the coffee ring effect - and wonder if has something to do with coffee doing this in particular (if it does). That effect is due to coffee containing spherical particles and how they pack.
No s**t? That is amazing! I thought maybe it had to do with mugs being (mostly) inherently round. I am frankly impressed that there is a scientific answer for this. Thank you!

doesn't help stop it though. dammit! hahaha
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