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Marvel at the wonders of the universe with this mesmerizing electric light show. The plasma ball creates a fascinating display of glowing electric tentacles, like lightning flowing from your fingertips. Plasma is the fourth state of matter. Neither solid, liquid, or gas, it is a super-charged ionized gas found in every star. The plasma ball works by sending a high-voltage, alternating current from a Tesla coil at its core, through a noble gas, to the inner surface of the glass sphere. Escaping electrons cause the inert gas inside the sphere to light up, creating the amazing effects. You can actually see electricity in the palm of your hand with this incredible device. The plasma ball design allows you to display it on a tabletop or hang it on a wall like a sconce. It can be powered via a USB-C cable or batteries. Turn on the sound-activated mode and watch the plasma arcs dance to the beat of your favorite song. Learn about electricity, matter, and energy. Bring physics to life with electrifying experiments. Interactive electricity light show Features: 5-inch glass sphere Beautiful new design Two modes: always-on and sound-activated USB-C power port and cable included (power adapter not included) Also works with 4 AAA batteries (not included) Hangs on a wall or rests on a tabletop Safe to use. Follow all instructions and precautions. Classic scientific device with a fresh new design Battery or USB powered, ensuring maximum usage time