The Fluid Dynamics of Fountain Pens
Summary
Hannah Fry hosts Michael Stevens to explore the physics of fountain pens, demonstrating how capillary action, surface tension, and hydrodynamics allow ink to flow smoothly. They examine various models, from vintage Watermans to modern Montblancs, discussing the delicate balance between ink chemistry and nib design. The episode also covers the history of pen innovations, such as the feed mechanism and piston fillers, before shifting to a segment on "bad words" that are commonly misused, like "noisome" and "begs the question."
Listen ad-free on Castria