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The flashing Energy Ball allows students to become a human hook-up wire! This very cool device consists of a 1.5-inch ball with two small metal electrodes. When the two electrodes are touched simultaneously, the ball flashes and makes a strange tone. The flashing Energy Ball utilizes a field effect transistor so even the slightest conduction between the two electrodes activates the Sphere. The Energy Ball (UFO Ball) is completely self-contained and requires no additional batteries or energy source. It is often used to demonstrate closed and open circuits, just line up your students in different "circuits" and complete the connection.
Small Parts. Not for children under 3 years.