Take a look at this 👀 It's a plasma toroid - a glass globe evacuated and filled with xenon. A coil is placed around the globe with a high frequency current (10 million cycles per second) The current excites the plasma inside the globe, but due to the coil's magnetic field, the plasma is confined to a torodial space, forming a plasma toroid. | Royal Institution of Great Britain

Create your own DIY Arduino based toroid coil winding machine at home. 😍 | Crafty Engineer

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