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Paraboloid Ball (Never Miss)

Mathematics

★Exhibit Content: Parabolic Focus ★Interaction: Model Interaction ★Operation: Place a small ball into the side track. When the top handwheel is rotated, the ball drops through the hole. After hitting the parabolic surface at the bottom, the ball bounces into the dome and strikes the suspended ball, and finally rolls back to the ball outlet through the center hole of the parabolic surface. ★Exhibit Description: The exhibit mainly consists of a display stand, acrylic enclosure, reflective surface, suspended model, plastic balls, etc. Visitors randomly choose a hole to release the ball from a height. After free fall, the ball collides with the parabolic surface and always bounces to hit the suspended ball at the focal point of the parabolic surface. ★Scientific Principle: Why is this? The key lies in the bottom of the acrylic enclosure being a parabolic surface. A parabolic surface is the set of points in the same plane that are equidistant from a fixed point and a fixed line. According to the optical focusing principle of a parabolic surface, light rays incident parallel to the principal axis will reflect and pass through the focal point. After the ball is released from a height, it undergoes free fall, collides with the parabolic surface, and bounces into the dome, i.e., the focal point of the parabolic surface.

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Review

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

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