Air-flow Experiments
A 1924 plate of air-flow experiment photographs issued through NASA's Technical Reports Server, showing six numbered figures arranged in three rows on a dark grey mount. The record is thin, so the plate itself is the main source. The pictures are smoky grey streamline photographs of airflow past a flat plate, a rounded body and a wedge-like shape, and a designer could draw on their flowing tonal bands for motion and fluid-line graphics.
