Quiet Lightning Visitors touch a glowing plasma sphere to create a lightning-type effect from the flow of electrons through a combination of 15 rare gases, demonstrating the conversion of high frequency alternating current into electromagnetic waves. Polarized Bat Visitors spin a disc and see a bat image appear and disappear. Polarizing filters demonstrate how light has characteristics of waves. 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.