with Astro-biologist Woody Sullivan
The Terrace Observatory, Exploratorium: Museum of Science, Art and Perception, San Francisco, CA
Corian, steel, wood, 6 ea. 17x18x60 in
Six oval benches together constitute a unique “hour planes” sundial. Each is aligned with the sun according to the hour it represents, ie. 10am, 11am, Noon, 1pm, 2pm or 3pm solar time. 40 minutes before and after the corresponding hour, sunlight projects through the 9 in. slit aperture onto the ground, indicating time and date. When the yellow window, or nodus, in the slit of light crosses the line created by the row of white markers on the ground, it is the solar hour.
Scientific and cultural aspects of time and sundials are also depicted on each bench.