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Touch the Aurora (Glow Ball)

Electromagnetism

★Exhibit Content: Principles of aurora formation, plasma phenomena ★Interaction: Electromechanical interactive demonstration device ★Operation: Visitors touch the glass ball and can see branched spark discharges inside the ball. The glow in the contact area becomes particularly bright, allowing an intuitive experience of the "artificial aurora" effect. At the same time, through wall graphics and text, they can learn about the principle of auroras generated by the interaction between the solar wind and Earth's magnetic field. ★Exhibit Description: The exhibit consists of a circular platform, multiple groups of plasma globes, a high-voltage power supply, and graphic explanations. The glass ball is filled with an inert gas mixture. The electrode inside the ball is connected to a high-frequency high-voltage power supply. Gas molecules undergo avalanche ionization in the electromagnetic field, forming branched discharge phenomena that simulate the brilliant forms of auroras. When visitors touch the glass shell, the human body acts as a conductor, forming a stronger discharge channel in the contact area, making the glow brighter. This allows visitors to personally experience the magical properties of plasma. It is suitable for science popularization displays in science and technology museums, youth activity centers, and astronomy and physics science exhibition areas. ★Scientific Principle: This exhibit is based on plasma phenomena and the principles of aurora formation: The discharge phenomenon of the plasma globe is a manifestation of plasma. The high-frequency high-voltage electric field ionizes the inert gas, forming a stream of charged particles and producing glow; The formation of auroras is a luminescent phenomenon caused by the solar charged particle stream (solar wind) entering Earth's magnetic field, colliding with atmospheric molecules at high altitudes near the north and south poles, and being excited or ionized; The exhibit simulates the plasma luminescence effect of auroras through the plasma globe, allowing visitors to understand the physical essence of aurora formation.

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Principle Display: ★★★★ Interaction Effect: ★★★★ Ease of Installation: ★★★★★ Durability: ★★★ Overall Rating: ★★★★

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