Filters are made up of very fine lines oriented in one direction. This exhibit demonstrates the particle-like qualities of light. Visitors direct a light source toward several rows of radiometers. When the photons of light strike the surface of the radiometer sails they transfer their energy and cause the sails to spin, creating a dramatic display of light and movement. This interactive computer station, encased in giant books in the library, reinforces the concepts explored in the Dracula Library interactive exhibits through a question and answer format.
Energy manifests itself in many forms.
Energy can be transformed from one form to another. Evidence that matter has properties of both particles and waves.