About this episode
A deep dive into the everyday wonder of a cheap, disposable pen. From tungsten carbide bearings and textured sockets to capillary ink action and shear-thinning fluids, we unpack how nano-sized tolerances and surface roughness unlock smooth, reliable writing. Debunk the myth of a perfect 500-nm gap, explore how a gel ink becomes liquid under pressure, and reveal the extraordinary science behind a tool you probably use daily.
Note: This podcast was AI-generated, and sometimes AI can make mistakes. Please double-check any critical information.
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