Nancy Susan Mills (USA) Electricity from Concentrated Wind This process begins with a pile of fine sand placed at the bottom of a chute which will funnel the blowing sand up into a container. The container is supported on a spring which begins to compress as the container fills with sand. As the spring compresses, attached gears turn a generator. When the spring is fully compressed, at a point above the initial position of the sand pile, the container dumps the sand into a chute which funnels the sand back to its initial position. The spring then continues to generate electricity as it lifts the container back to its initial position. The process then begins again. Reward: Satisfaction and joy |