Thermal Image, a collaboration between Arizona State University sculptor Hilary Harp and sound and video artist Barry Moon, is a networked electromechanical sculpture designed to reflect data on the Gross National Happiness index. Using data on the emoticons used in Twitter feeds from 20 cities across the globe, the sculpture represents the emotional state of the cities on a thermal display and through a shifting ambient soundscape. Light bulbs arrayed under a slowly turning drum covered in thermochromic film brighten or dim according to the frequency of positive and negative emoticons. Visitors can plug cables into different jacks on the sculpture to tune into different locales.
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