Features: This generator uses induction effect to produce static, when two electrophorus spin, the charged system, especially ball part on discharge fork equipped with insulated handle, will gather a lot different electric charge. The conductive layer of conductive plate is coated with conductive material, coating is firm, durable and overcomes the shortcomings that aluminum foil is easy to fall off. Improved static generating performance, it can generate static even in humid climate and rainy day. Itself can also be used for a series of experiments, such as electrostatic induction, spark discharge, point discharge and capacitor (refer to the Leyden jar on generator) capacitance change and so on. Specifications: Model: 23008 Material: Metal Size: Approx. 33.5 x 29 x 19.5cm/13.2 x 11.4 x 7.7in Package Weight: 1.5kg(approx.) Package Includes: 1 x Static Machine