Hans Erni, ink on glassine paper, ca. 1935, private collection,...

Hans Erni, ink on glassine paper, ca. 1935, private collection, © Hans Erni Estate.

Hans Erni (1909–2015) designed this drawing for his friend Paul Jaray. He used this schematic representation of laminar and turbulent flow in several publications. Paul Jaray (1889–1974) was the first and most important pioneer of aerodynamics for automobiles. Via Nero

©

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November 16, 2021