A pitch drop experiment is a long-term experiment which measures the flow of a piece of pitch over many years.
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Fun fact: no one has even seen the pitch actually drop - they had a camera set up to catch the ninth drop in 2014 but it fell during a server outage. You can watch a live feed of the tenth drop!
I got a 403, but I’m on mobile, maybe it’s only viewable on PC? I’ll have to check tomorrow
Another one drops the pitch

That’s the most interesting wikipedia entry I’ve read in a good long while.






