01/06/2026
🌬️ Ever wondered how a spinning tower fan can hold lightweight objects against its grille using just airflow and air pressure? It's a captivating demonstration of everyday physics! The moving air generates enough force to keep items, like these Pilot FriXion erasable pens, in place. However, once the fan stops, the pressure dissipates, and they fall.
These pens are particularly interesting as they use heat-sensitive ink that becomes transparent when warmed through friction. In colder temperatures, the ink can even reappear! No magnets, tape, or hidden supports are involved—just the power of airflow and physics at work.