Maglev Turntable

Mobile Science Museum · Electromagnetism

Operation: Press the "Start" button and observe whether the metal block levitates to gain a deeper understanding of eddy currents, eddy current magnetic fields, and magnetic forces. Exhibit Overview: The exhibit mainly consists of a display stand, an aluminum disc, a metal block with embedded permanent magnets, an acrylic cover, and a motor that drives the aluminum disc to rotate. When the "Start" button is pressed, the motor drives the aluminum disc on the table to rotate. The rotating aluminum disc generates induced currents and an induced magnetic field, forming an eddy current magnetic field. This eddy current magnetic field is opposite in direction to the magnetic field of the permanent magnets above, creating repulsion, so the metal block above slowly levitates. Scientific Principle: Why does the metal block levitate in the air? This is an eddy current effect. The eddy current effect refers to Faraday's law of electromagnetic induction. When a bulk conductor is placed in an alternating magnetic field or moves in a fixed magnetic field, induced currents are generated within the conductor, and these currents close within the conductor. The metal block above the aluminum disc has embedded permanent magnets. The motor drives the aluminum disc to rotate rapidly, generating induced currents in the aluminum disc, thereby producing an induced magnetic field. Its magnetic field is exactly opposite in direction to the magnetic field of the magnets above it. The metal block (magnet) above slowly levitates under the combined action of gravity and repulsive force.

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• China Science and Technology Museum Standard Edition CSTM Standard Edition
  Dimensions (unit: m): 0.75×0.68×1.05 Brand: KexMall Model: PopsciCat-Mobile-047 1. Materials: ① Display stand: flame-retardant ABS injection molding, thickness ≧4mm ② Tabletop: compact laminate, thickness ≧12mm ③ Instruction plate: acrylic UV printing ④ Tabletop fasteners: standard triangular locks ⑤ Protective cover: transparent acrylic + orange acrylic 2. Main Configuration: ① Electrical control: electrical logic control system, equipped with KexMall® K1 PLC controller with protection specially for science exhibits ② Switching power supply: AC-DCS-60-12/24 input AC100-240V, 50/60Hz, output power 60W ③ Button: self-resetting 22mm stainless steel metal button with ring light 3. Energy Requirements: AC100-240V, 50/60Hz 100W

  Operation: Press the "Start" button and observe whether the metal block levitates to gain a deeper understanding of eddy currents, eddy current magnetic fields, and magnetic forces. Exhibit Overview: The exhibit mainly consists of a display stand, an aluminum disc, a metal block with embedded permanent magnets, an acrylic cover, and a motor that drives the aluminum disc to rotate. When the "Start" button is pressed, the motor drives the aluminum disc on the table to rotate. The rotating aluminum disc generates induced currents and an induced magnetic field, forming an eddy current magnetic field. This eddy current magnetic field is opposite in direction to the magnetic field of the permanent magnets above, creating repulsion, so the metal block above slowly levitates. Scientific Principle: Why does the metal block levitate in the air? This is an eddy current effect. The eddy current effect refers to Faraday's law of electromagnetic induction. When a bulk conductor is placed in an alternating magnetic field or moves in a fixed magnetic field, induced currents are generated within the conductor, and these currents close within the conductor. The metal block above the aluminum disc has embedded permanent magnets. The motor drives the aluminum disc to rotate rapidly, generating induced currents in the aluminum disc, thereby producing an induced magnetic field. Its magnetic field is exactly opposite in direction to the magnetic field of the magnets above it. The metal block (magnet) above slowly levitates under the combined action of gravity and repulsive force.

• Optimized Popular Edition Optimized Edition
  Dimensions (unit: m): 0.75×0.68×1.05 Brand: KexMall Model: PopsciCat-Mobile-047 1. Materials: ① Display stand: flame-retardant ABS injection molding, thickness ≧4mm ② Tabletop: compact laminate, thickness ≧12mm ③ Instruction plate: acrylic UV printing ④ Tabletop fasteners: standard triangular locks ⑤ Protective cover: transparent acrylic + orange acrylic 2. Main Configuration: ① Electrical control: electrical logic control system, equipped with KexMall® K1 PLC controller with protection specially for science exhibits ② Switching power supply: AC-DCS-60-12/24 input AC100-240V, 50/60Hz, output power 60W ③ Button: self-resetting 22mm stainless steel metal button with ring light 3. Energy Requirements: AC100-240V, 50/60Hz 100W

  Operation: Press the "Start" button and observe whether the metal block levitates to gain a deeper understanding of eddy currents, eddy current magnetic fields, and magnetic forces. Exhibit Overview: The exhibit mainly consists of a display stand, an aluminum disc, a metal block with embedded permanent magnets, an acrylic cover, and a motor that drives the aluminum disc to rotate. When the "Start" button is pressed, the motor drives the aluminum disc on the table to rotate. The rotating aluminum disc generates induced currents and an induced magnetic field, forming an eddy current magnetic field. This eddy current magnetic field is opposite in direction to the magnetic field of the permanent magnets above, creating repulsion, so the metal block above slowly levitates. Scientific Principle: Why does the metal block levitate in the air? This is an eddy current effect. The eddy current effect refers to Faraday's law of electromagnetic induction. When a bulk conductor is placed in an alternating magnetic field or moves in a fixed magnetic field, induced currents are generated within the conductor, and these currents close within the conductor. The metal block above the aluminum disc has embedded permanent magnets. The motor drives the aluminum disc to rotate rapidly, generating induced currents in the aluminum disc, thereby producing an induced magnetic field. Its magnetic field is exactly opposite in direction to the magnetic field of the magnets above it. The metal block (magnet) above slowly levitates under the combined action of gravity and repulsive force.

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