Ferromagnetic + fluid = ferrofluid, a liquid containing nanoscale particles of magnetite, hematite, or an iron compound. Invented by NASA’s Steve Papell in 1963, ferrofluid forms undulating spikes and patterns as it reacts to nearby magnetic fields.
Glow sticks are a chemiluminescent reaction captured in plastic tubes. Combine ferrofluid with glow stick liquid and you get color-filled landscapes of black ooze. Physics Girl Dianna Cowern demonstrates and explains.Watch more Physics Girl videos on this site, plus this ferrofluid clock prototype.
This Webby award-winning video collection exists to help teachers, librarians, and families spark kid wonder and curiosity. TKSST features smarter, more meaningful content than what's usually served up by YouTube's algorithms, and amplifies the creators who make that content.
Curated, kid-friendly, independently-published. Support this mission by becoming a sustaining member today.