Flame Speed and Spark Intensity
A 1925 technical report from the NASA Technical Reports Server, a scientific study of flame speed and spark intensity, with photographic plates recording combustion phenomena. The pictures are dark, grainy high-contrast photographs of luminous shapes against black backgrounds, showing tapering streaks and bright spark points captured in sequence. A designer might borrow their stark monochrome composition, vertical banding and glowing light-trail textures for abstract or science-themed layouts.
