Oersted's Experiment
★Exhibit Content: Magnetic effect of current, right-hand grip rule ★Interaction: Electromechanical interaction ★Operation: 1. Rotate the knob to energize the wire and observe the deflection of the magnetic needle; 2. Turn the turntable to rotate the magnetic needle base, but the needle direction remains unchanged; 3. Rotate the knob to adjust the current direction, and the deflection direction of the small magnetic needle changes. ★Exhibit Description: The exhibit consists of a circular base, a vertical energized conductor, a rotating turntable, multiple sets of small magnetic needles, a control knob, and a protective fence. It is a recommended exhibit from PopsciCat Exhibit Store. Visitors rotate the control knob to energize the wire, change the current direction, and simultaneously turn the turntable to observe the deflection of the small magnetic needles at various positions on the disc. This intuitively demonstrates the magnetic field distribution around an energized wire, verifies the magnetic effect of current, and helps understand Ampère's rule (right-hand grip rule). ★Scientific Principle: Oersted's experiment confirmed the existence of a magnetic field around an energized wire. In 1820, Oersted discovered the magnetic effect of current, establishing for the first time the connection between electricity and magnetism. When not energized, the small magnetic needle points along the north-south direction of Earth's magnetism; after the wire is energized, a magnetic field is generated, causing the small magnetic needle to deflect; changing the current direction changes the magnetic field direction accordingly. The right-hand grip rule can be used to determine the direction of the magnetic field around the current. The magnetic field generated by an energized wire is essentially formed by the excitation of directional moving charges.
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- Φ1.2×1.6m Φ1.2×1.6mDimensions (diameter × height): Φ1.2×1.6m Brand: PopsciCat Model: PopsciCat-ElectroMagnetic-078 1. Materials: ① Circular exhibit platform: frame 2mm cold-rolled sheet, enclosure 2.0mm cold-rolled sheet, surface electrostatic baking paint ② Protective fence: stainless steel round tube ③ Turntable surface: transparent tempered glass ④ Vertical conductive column: stainless steel tube ⑤ Instruction plate: 5mm thick acrylic UV inkjet printing ⑥ Maintenance door: 2.0mm cold-rolled sheet with surface baking paint 2. Main configuration: ① Electrical control: electrical logic control system, equipped with Inertia® K1 PLC controller with protection specially for science exhibits ② Button: self-resetting 22mm stainless steel metal button with ring light; lamp bead voltage not higher than 12V ③ Ring-arranged precision small magnetic needle assembly ④ Turntable rotation drive mechanism ⑤ DC stabilized power supply 3. Installation requirements: ① Energy requirement: AC22V150W (standard three-wire socket) ② Installation foundation: exhibit placed directly on the floor, floor load-bearing ≥350kg ③ Entry passage: door frame dimensions (width × height) ≥1.7m×2.0m, continuous turning interval in passage ≥2.5m ④ Maintenance access: not required
★Exhibit Content: Magnetic effect of current, right-hand grip rule ★Interaction: Electromechanical interaction ★Operation: 1. Rotate the knob to energize the wire and observe the deflection of the magnetic needle; 2. Turn the turntable to rotate the magnetic needle base, but the needle direction remains unchanged; 3. Rotate the knob to adjust the current direction, and the deflection direction of the small magnetic needle changes. ★Exhibit Description: The exhibit consists of a circular base, a vertical energized conductor, a rotating turntable, multiple sets of small magnetic needles, a control knob, and a protective fence. It is a recommended exhibit from PopsciCat Exhibit Store. Visitors rotate the control knob to energize the wire, change the current direction, and simultaneously turn the turntable to observe the deflection of the small magnetic needles at various positions on the disc. This intuitively demonstrates the magnetic field distribution around an energized wire, verifies the magnetic effect of current, and helps understand Ampère's rule (right-hand grip rule). ★Scientific Principle: Oersted's experiment confirmed the existence of a magnetic field around an energized wire. In 1820, Oersted discovered the magnetic effect of current, establishing for the first time the connection between electricity and magnetism. When not energized, the small magnetic needle points along the north-south direction of Earth's magnetism; after the wire is energized, a magnetic field is generated, causing the small magnetic needle to deflect; changing the current direction changes the magnetic field direction accordingly. The right-hand grip rule can be used to determine the direction of the magnetic field around the current. The magnetic field generated by an energized wire is essentially formed by the excitation of directional moving charges.
Review
Principle Display: ★★★★ Interaction Effect: ★★★ Ease of Installation: ★★★★ Durability: ★★★★ Overall Rating: ★★★★