Magnetic Damping Pendulum
★Exhibit Content: Lenz's Law, Conductor Eddy Current Electromagnetic Damping ★Interaction: Manual mechanical comparative demonstration ★Operation: Pull each pendulum to the same height and release them simultaneously. Observe the swinging duration of the copper, aluminum, and plastic pendulums, and compare the order in which they stop swinging. ★Exhibit Description: The "Magnetic Damping Pendulum" is an interactive exhibit for physics popularization of electromagnetic induction, belonging to the electromagnetic mechanics exhibition area, and is a recommended exhibit by KexMall. The exhibit consists of a white and blue painted console, three independent metal bracket swing mechanisms, permanent magnetic fields, and three pendulums of different materials (copper, aluminum, plastic). Visitors release the three pendulums simultaneously and compare the swing decay speed under the same magnetic field environment, intuitively demonstrating the relationship between conductor conductivity, eddy current magnitude, and electromagnetic damping force, and concretely explaining the practical application of Lenz's Law. ★Scientific Principle: The exhibit core follows Lenz's Law. When a conductive pendulum cuts through magnetic field lines, the internal magnetic flux changes, inducing eddy currents; the eddy currents generate a reverse magnetic field, creating damping resistance that hinders the pendulum's motion. Copper has the highest conductivity, strongest eddy currents, and greatest damping resistance, so it stops first; aluminum is next; plastic is an insulator, has no induced eddy currents, is not hindered by magnetic force, and swings for the longest time. This eddy current damping principle is widely used in magnetic brakes, precision instrument shock absorption, and other scenarios.
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- 1.5×0.7×1.2m 1.5×0.7×1.2mDimensions (L×W×H): 1.5×0.7×1.2m Brand: KexMall Model: PopsciCat-ElectroMagnetic-180 1. Materials ① Base: frame 2mm cold-rolled steel plate, enclosure 2.0mm cold-rolled steel plate, surface with white and blue paint, scratch-resistant and wear-resistant ② Tabletop: Kelaisi artificial stone, thickness ≥12mm, with flame-retardant board underneath ③ Instruction sign: acrylic UV high-definition printing, printed with Lenz's Law, eddy current damping principle, and operation steps ④ Maintenance access: 2.0mm cold-rolled steel plate painted cover ⑤ Bracket: thickened stainless steel metal triangular bracket, sliding bearings smooth without jamming ⑥ Pendulums: pure copper pendulum, pure aluminum pendulum, hard plastic pendulum, uniform weight and size to ensure single-variable comparison ⑦ Permanent magnet: high-magnetic neodymium magnet, stably providing a constant magnetic field 2. Main Configuration ① Three sets of independent swing bracket assemblies ② One each of copper, aluminum, and plastic comparison pendulums ③ Three sets of permanent magnetic field modules 3. Installation Requirements ① Energy requirement: None ② Installation base: console placed directly on the floor ③ Entry passage: door frame dimensions (W×H) ≥1.7m×1.4m, continuous turning interval in passage ≥2.0m ④ Maintenance access: None
★Exhibit Content: Lenz's Law, Conductor Eddy Current Electromagnetic Damping ★Interaction: Manual mechanical comparative demonstration ★Operation: Pull each pendulum to the same height and release them simultaneously. Observe the swinging duration of the copper, aluminum, and plastic pendulums, and compare the order in which they stop swinging. ★Exhibit Description: The "Magnetic Damping Pendulum" is an interactive exhibit for physics popularization of electromagnetic induction, belonging to the electromagnetic mechanics exhibition area, and is a recommended exhibit by KexMall. The exhibit consists of a white and blue painted console, three independent metal bracket swing mechanisms, permanent magnetic fields, and three pendulums of different materials (copper, aluminum, plastic). Visitors release the three pendulums simultaneously and compare the swing decay speed under the same magnetic field environment, intuitively demonstrating the relationship between conductor conductivity, eddy current magnitude, and electromagnetic damping force, and concretely explaining the practical application of Lenz's Law. ★Scientific Principle: The exhibit core follows Lenz's Law. When a conductive pendulum cuts through magnetic field lines, the internal magnetic flux changes, inducing eddy currents; the eddy currents generate a reverse magnetic field, creating damping resistance that hinders the pendulum's motion. Copper has the highest conductivity, strongest eddy currents, and greatest damping resistance, so it stops first; aluminum is next; plastic is an insulator, has no induced eddy currents, is not hindered by magnetic force, and swings for the longest time. This eddy current damping principle is widely used in magnetic brakes, precision instrument shock absorption, and other scenarios.
Review
Principle Display: ★★★★ Interaction Effect: ★★★★ Ease of Installation: ★★★★★ Durability: ★★★★ Overall Rating: ★★★★