This is just the prettiest chart ever. Some smarty pants artists/statisticians set up this system that records the amount of sunlight per day at park by burning it into a log via magnifying glass. https://t.co/ZnGLJbouzR pic.twitter.com/ZkkmqNzoz1
— Dr. Jess Hartnett 📊 (@Notawful) November 7, 2018
Jess Hartnett tweets:
This is just the prettiest chart ever. Some smarty pants artists/statisticians set up this system that records the amount of sunlight per day at park by burning it into a log via magnifying glass.
From reddit
and seemed to be based on https://en.wikipedia.org/wiki/Campbell–Stokes_recorder.
Pretty cool