visited 2019-04-03, noticed it was missing 2022-09-12 deleted: https://www.youtube.com/watch?v=rNHlRYRYjQk&feature=youtu.be deleted: Ferrofluid and water colors make for beautiful magnetic paintings - Geek.com
the site referred Fabian Oefner
Ferrofluid and water 科学アート 磁性流体 共鳴 チューリングパターン