Many of the approaches we have used for solar power can be used to harvest power from other sources. We can harvest heat energy, wind energy, sound energy, vibration energy, or the energy of the viewers of the art as they pass by.
Many of the approaches we have used for solar power can be used to harvest power from other sources. We can harvest heat energy, wind energy, sound energy, vibration energy, or the energy of the viewers of the art as they pass by.
