Anonymous ID: 5c9fc3 July 6, 2021, 6:29 a.m. No.14065391   🗄️.is 🔗kun

>>14065375

Aren't there those experiments by that German/Austrian dude from the 1860s, name starts with S, where they sat people in dark rooms and trained them to be able to see electromagnetic lines of force by placing a magnet in the center of a hollowed metal sphere with holes at the top and bottom to mimic the planet's aurora borealis effect?

 

What was that guys name