Tesla's Lamp USB Powered 7cm diameter

Discover the fascinating world of electrical discharges with this iconic scientific lamp, originally created by Nikola Tesla in 1894. The plasma ball features a sphere filled with three noble gases, neon, argon, and xenon, and has an electrode in the center that excites filaments when a high-frequency alternating current is applied. You can control the electrical discharges with your fingers as you touch the lamp, making it an interactive and mesmerizing experience. With a diameter of 7cm, this plasma ball runs on power from USB and batteries, making it perfect for display in your room or office. It's an ideal gift for science enthusiasts, nerds, or anyone who loves mesmerizing displays. Please note: this item should not be placed near sensitive equipment and is not suitable for people with a pacemaker.