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For generating static electric charges and causing electric discharges. Relative to Van de Graaf it produces higher current with lower voltage which is much safer. Use the hand crank to rotate the two high resistance plastic disks in opposite directions. Disk diameter about 10" (250mm) with equally spaced metal sectors. A rapid sequence of sparks can be generated by lowering the system's capacitance. Mounted on insulated wooden base. Comes with a Teacher's Guide and reproducible Student Handout.
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