To create this transient work of art, Smilde mists water into the air, and releases a burst of chemical “fog” from a smoke machine into the mist. One of Berndnaut Smilde’s cloud displays In an entertainment review published in New Scientist, author Christine Ottery outlines the cloud-making process employed by a Dutch weather artist, Berndnaut Smilde 7. The sheer absurdity of a single cloud suspended among an artistic sculpture is fascinating, and the science behind it makes it exceptionally more interesting. Ned Kahn’s “Cloud Arbor,” located in Pittsburgh, PA Many of Ned Kahn’s other sculptures incorporate suspended fog or clouds, and I was curious about the process of their creation. The position and intensity of the light changes depending on the time of day during which it is observed. Kahn uses a material called a diffraction grating in his “Prism Tunnel” sculpture in order to create a fascinating, ever-changing light display. The most well known example of this phenomenon is the dispersion of white light into its constituent colors. Light refraction is simply the bending of light by a foreign medium, which changes the speed of the wave 6. Most people encounter light refraction at some point or another during their lifetime, whether in the form of Pink Floyd’s “The Dark Side of The Moon” album cover, or the rainbow that appears when light shines through a faceted piece of glass. Pink Floyd’s famous “Dark Side of The Moon” album cover Ned Kahn’s “Prism Tunnel,” located in San Marino, CA For example, the creation of Kahn’s “Prism Tunnel” display in San Marino, California required some basic knowledge about light refraction. Because Kahn’s work focuses on the scientific natural processes in the world, most, if not all of his displays require a basic understanding of related scientific concepts. Just like the exhibits at San Francisco’s Exploratorium that inspired Ned Kahn’s artwork, Kahn’s own work involves numerous scientific concepts and applications.
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