SonUmbra by Loop.pH is a sort of solar powered tree that is motion sensitive.
About the project:
The atmosphere of musical rhythms, harmonies and luminous patterns are composed by the visitors’ movement - either active or passive. The light emitting fabric of the umbrella is crafted into a lacework of many electroluminescent fibres. This latticed pattern is animated in concert with the generated surround sound and visually illustrates the visitors’ position within the constellation. Wandering unaware or actively gravitating towards Sonumbra each person plays a part and becomes a note in a unique composition of light, sound and space.
More than merely decorative, the tree was designed for use in remote areas in need of low cost lighting. In addition, by providing shade during the day and a light source at night, it could serve as a safe gathering place for local communities.
You can see it in motion in this video:
Sonumbra @ Design and the Elastic Mind from Loop.pH on Vimeo.