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If a window gets foggy, we will rub it subconsciously to keep it clean. But we are glad to blow on the glass surface to make condensation as well, so that we can draw something there with our fingers. These two situations are both referring to a kind of change between a dim state and a clear one, between futility and utility.

 

The thermochromic paint is capable of changing between colored and colorless state under different temperature. This stunning capability could imitate the above-mentioned effect of fog. I embedded a clock in a wall and colored the transparent surface of the clock with the thermochromic material. In this way, a novel interaction has been created. If we want to know the time, we just need to put our hands on the clock surface or blow directly on it to warm the thermochromic material. It will reach the "colorless" temperature in several seconds. Then the surface becomes translucent again, and the time could be seen.

More details at ENSA Limoges.

​WARMING TIME

Time: Feb. 2015

Location: Limoges, France

Materials: thermochromic ink, wood, paint, clock mechanism

Technologies: painting, carpentry

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