Amazon has the Thames & Kosmos The Plasma Ball Essential STEM Tool | Classic Scientific Device, Fresh 5-inch Glass Sphere, Interactive Electric Light Show | Explore Electricity, Matter, Energy, Small on sale for $17.49 (reg. $30).
- Learn about electricity, matter, and energy with this timeless scientific instrument in a reimagined new design.
- The plasma ball sends a high-voltage, alternating current from its core, illuminating a noble gas inside the sphere and creating a mesmerizing electric light show!
- Sound-activated mode enables the plasma to dance to the beat of your favorite music!
- Can be powered by (4) AAA batteries (not included) or by the included USB-C cable.
- Unique design allows the plasma ball to be displayed on a tabletop or hung on a wall!
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