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$39.99
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This portable desktop plasma orb provides hands-on experience with light, electricity, and energy.
A small Tesla coil generates a large electrical potential difference, which tries to even itself out by discharging in the same way that a cloud discharges lightning. Touch the glass ball to generate and control concentrated plasma streams with just your fingers. Features an onoff switch and requires 4 AAA batteries (not included) or an AC adaptor (also not included).
15.25 cm (6 inches). 8+ years.
