Diagrammatic Expression
Each converts something the eye cannot take in at once into agreed lines on a flat sheet, whether the sky, the inside of a body, a sound, or a sequence of steps.
Dictionary entry
- Isometric Illustration technical drawing–digital / Technique
Keeps depth while looking down from above, explaining relationships among many parts in a single image.
- Hatsusaburō Panoramic Map 1913–1950s / Style
The tourist bird's-eye map style perfected by Hatsusaburō Yoshida: extravagantly curved horizons, exaggerated landmarks and a view that pulls distant cities into one sheet, turning Taishō and Shōwa era travel into pictorial maps.
- Celestial Atlas 17th–19th century / Style
The Baroque celestial atlas layering constellation mythology over observation. Cellarius's Harmonia Macrocosmica marks the summit of an age when scientific diagram could also be decorative art.
- Anatomical Illustration 1543– / Style
The style Vesalius's Fabrica established: muscled bodies posing in landscapes. Scientific accuracy cohabiting with theatrical staging governed the grammar of anatomical plates for centuries.
- Portolan Chart 13th–17th century / Style
A medieval working sea chart, crossed by radiating rhumb lines. Coastlines and place names run precisely along the vellum while flags and monsters fill the empty water, from a time when a map's usefulness and its ornament had not yet parted.
- Spectrogram 1940s– / Technique
A visualization that maps sound onto a plane of time, frequency and intensity. From birdsong research to the DAW screen it became the standard way to see the shape of a sound, and artists have since taken to hiding pictures inside it.
- Cymatics 1787– / Technique
The experiment of seeing sound as a pattern in matter, beginning with the Chladni figures that sand draws on a vibrating plate. Each frequency brings out its own geometry, which makes this the oldest device for witnessing how sound and form correspond.
- Origami Diagram 1950s– / Style
The dotted-line-and-arrow language systematized by Akira Yoshizawa for writing three-dimensional folding onto flat pages. Mountain and valley folds read across languages, and the crease pattern became an object of mathematics.
- Weather Map 1851– / Style
The atmosphere drawn on one sheet with isobars, front symbols and weather signs. Making invisible pressure fields visible through the density of curves became the public's scientific graphic, from newspapers to television.
- Circuit Diagram 1890s– / Style
An engineering language that draws circuits with standardized symbols and orthogonal lines. Discarding physical placement to record only connection, it arrived at a topological way of drawing well before the transit map did.
- Flowchart 1921– / Layout
The Gilbreths invented this process diagram for work analysis. Its grammar of shapes gives a diamond to every decision and a rectangle to every process, and by way of programming it became the common language for thinking in steps.