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Dancing Paperclip

Science Caravan · Electromagnetism

Exhibit Dimensions: Transport dimensions: 540×440×640mm, Display dimensions: 540×440×1450mm. Exhibit Composition: Consists of ABS plastic molded cabinet, ABS plastic molded pedestal, ABS milky white plastic molded operation countertop with color silk-screened flip-up instruction board, delay circuit, stainless steel illuminated self-reset metal button, leakage protector, coil, concave basin, paperclips, and sound playback equipment, etc. Operation: Press the "Start" button to watch the paperclips dance to different musical rhythms; Scientific Principle: Why do paperclips "dance" in an orderly manner with the musical rhythm? Beneath the stage where the paperclips dance, there is actually an electromagnetic coil hidden. When the coil is energized, it generates a magnetic field and becomes an electromagnet. As the voltage across the coil changes continuously with the musical rhythm, the strength of the magnetic field also changes. Since paperclips are made of iron, they become magnetized in the magnetic field, allowing them to attract each other. Thus, multiple paperclips connect and "stand up," dancing to the musical rhythm.

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