Halbach Array
★Exhibit Content: Halbach array magnetic field demonstration ★Interaction: Mechanical interaction ★Operation: Pull the rope to drag the iron block and feel the difference in force when the three sets of devices are disengaged. ★Exhibit Description: The exhibit consists of an oval interactive platform, three independent slide grooves, drag ropes, iron blocks, and permanent magnet assemblies. It is a recommended exhibit from the PopsciCat Exhibit Store. The platform surface has three transparent windows. Inside, the iron blocks are arranged in different Halbach array configurations. Visitors can pull the outer ropes to pull the iron blocks out of the magnetic field, directly comparing the pulling force required for the three structures, experiencing the impact of magnetic circuit arrangement on magnetic field strength, and understanding the characteristic that a Halbach array can concentrate a stronger magnetic field with fewer magnets. ★Scientific Principle: Ferromagnetic materials have high magnetic permeability, which can concentrate magnetic field lines and enhance the local magnetic field. Different permanent magnet arrangements change the degree of closure of the magnetic circuit, and the magnetic reluctance changes accordingly. The special Halbach array arrangement allows the magnetic field to concentrate on one side and greatly weaken on the other side. The three exhibits use different magnet arrangements, so the magnetic attraction force on the iron block varies, and the pulling force required to pull the iron block apart also differs significantly, intuitively demonstrating the intrinsic connection between magnetic circuit structure and magnetic field strength.
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- 1.5×0.8×0.8 1.5×0.8×0.8Dimensions (unit: m): 1.5×0.8×0.8 Brand: PopsciCat Model: PopsciCat-Kids-058 1. Materials: ① Platform frame: cold-rolled steel plate, surface powder coated ② Tabletop: 12mm Kelesi artificial stone, with flame-retardant board underneath ③ Windows: colored + high-transparency acrylic, hot-bent process, smooth edges, stable structure ④ Instruction sign: 5mm thick acrylic UV printing ⑤ Drag rope: wear-resistant nylon rope ⑥ Iron block: carbon steel component 2. Main configuration: ① Permanent magnet array assembly ② Sliding guide groove 3. Installation requirements: ① Energy requirement: no power supply needed ② Installation base: directly placed on indoor flat ground ③ Entry passage: door frame size (width×height) ≥1.2m×2.0m, continuous turning interval in passage ≥2.0m ④ Maintenance access: not required
★Exhibit Content: Halbach array magnetic field demonstration ★Interaction: Mechanical interaction ★Operation: Pull the rope to drag the iron block and feel the difference in force when the three sets of devices are disengaged. ★Exhibit Description: The exhibit consists of an oval interactive platform, three independent slide grooves, drag ropes, iron blocks, and permanent magnet assemblies. It is a recommended exhibit from the PopsciCat Exhibit Store. The platform surface has three transparent windows. Inside, the iron blocks are arranged in different Halbach array configurations. Visitors can pull the outer ropes to pull the iron blocks out of the magnetic field, directly comparing the pulling force required for the three structures, experiencing the impact of magnetic circuit arrangement on magnetic field strength, and understanding the characteristic that a Halbach array can concentrate a stronger magnetic field with fewer magnets. ★Scientific Principle: Ferromagnetic materials have high magnetic permeability, which can concentrate magnetic field lines and enhance the local magnetic field. Different permanent magnet arrangements change the degree of closure of the magnetic circuit, and the magnetic reluctance changes accordingly. The special Halbach array arrangement allows the magnetic field to concentrate on one side and greatly weaken on the other side. The three exhibits use different magnet arrangements, so the magnetic attraction force on the iron block varies, and the pulling force required to pull the iron block apart also differs significantly, intuitively demonstrating the intrinsic connection between magnetic circuit structure and magnetic field strength.
Review
Principle Display: ★★★★ Interaction Effect: ★★★★ Ease of Installation: ★★★★★ Durability: ★★★★ Overall Rating: ★★★★