Electromagnetic Shielding
★Exhibit Content: Through electric drive, move the radio into metal mesh covers with different densities to conduct comparative experiments, intuitively experience electromagnetic shielding phenomenon, and understand the shielding effect of metal on electromagnetic waves. ★Interaction: Electromechanical interaction ★Operation: 1. Press the "Start" button to turn on the exhibit and radio; 2. Press the "Left" button to move the radio under the left metal mesh cover; 3. Observe the change in radio sound, press the "Right" button to move the radio under the right metal mesh cover; 4. Compare the radio playback status under the two mesh covers and observe the electromagnetic shielding phenomenon. ★Exhibit Description: This exhibit consists of an operation console, an electric translation transmission mechanism, two sets of metal cage mesh covers with different densities, a radio, a control button group, and a transparent protective cover. It is a recommended exhibit from the PopsciCat Exhibit Store. Visitors press the start button to turn on the radio, then use the left and right buttons to control the transmission mechanism to move the radio horizontally into the interiors of two metal shielding cages with different mesh specifications. By comparing the changes in radio sound, visitors can intuitively feel the shielding effect of metal conductors on electromagnetic waves through controlled experiments and understand the practical applications of electromagnetic shielding in daily life. ★Scientific Principle: When electromagnetic waves reach the surface of a metal conductor, reflection occurs, and at the same time, absorption loss is generated inside the conductor, hindering the continued transmission of electromagnetic wave energy, thereby achieving electromagnetic shielding. Metal shells and metal meshes can both serve as shielding bodies. The shielding performance is affected by factors such as the type of radiation source, material selection, structural form, and mesh gap size. The mesh size directly determines the shielding effect for electromagnetic waves of different frequencies.
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- 1.4×0.6×1.3m 1.4×0.6×1.3mDimensions (L×W×H): 1.4×0.6×1.3m Brand: PopsciCat Model: PopsciCat-Wave-022 1. Materials: ① Base: frame 2mm cold-rolled sheet, enclosure 2.0mm cold-rolled sheet, surface baked paint ② Countertop: Kelaisi artificial stone, thickness ≥12mm, with flame-retardant board underneath ③ Metal mesh cover: stainless steel wire welded and formed, surface polished and anti-rust treated ④ Transparent protective cover: colored + high-transparency acrylic material, hot bending process, smooth edges, stable structure ⑤ Metal bracket: metal material, surface anti-rust spray treatment ⑥ Operation instruction sign: 5mm thick acrylic UV printing 2. Main Configuration: ① Electrical control: electrical logic control system, equipped with Guanjian® K2 type PLC controller with protection specially for science exhibits ② Electric linear transmission mechanism: motor with linear sliding module, realizing automatic left-right position shifting of the radio ③ Radio component: radio unit, can output audio signal, as an electromagnetic wave receiving observation carrier ④ Button component: metal illuminated buttons, including start, left move, right move function buttons, for visitor interactive operation ⑤ Switching power supply: DC stabilized power supply, providing stable power for control system, transmission motor, and radio 3. Exhibition Requirements: ① Energy demand: AC100-240V, 50/60Hz150W (standard three-wire socket); ② Installation foundation: exhibit placed on the ground, floor load ≥200kg/m², reserve ≥1.8m of visitor operation space in front of the exhibit; ③ Entry passage: door frame size (W×H) ≥1.4m×1.5m, continuous turning interval ≥2.5m; ④ Maintenance passage: not required
★Exhibit Content: Through electric drive, move the radio into metal mesh covers with different densities to conduct comparative experiments, intuitively experience the electromagnetic shielding phenomenon, and understand the shielding effect of metal on electromagnetic waves. ★Interaction: Electromechanical interaction ★Operation: 1. Press the "Start" button to turn on the exhibit and radio; 2. Press the "Left" button to move the radio under the left metal mesh cover; 3. Observe the change in radio sound, press the "Right" button to move the radio under the right metal mesh cover; 4. Compare the radio playback status under the two mesh covers and observe the electromagnetic shielding phenomenon. ★Exhibit Description: This exhibit consists of an operation console, an electric translation transmission mechanism, two sets of metal cage mesh covers with different densities, a radio, a control button group, and a transparent protective cover. It is a recommended exhibit from the PopsciCat Exhibit Store. Visitors press the start button to turn on the radio, then use the left and right buttons to control the transmission mechanism to move the radio horizontally into the interiors of two metal shielding cages with different mesh specifications. By comparing the changes in radio sound, visitors can intuitively feel the shielding effect of metal conductors on electromagnetic waves through controlled experiments and understand the practical applications of electromagnetic shielding in daily life. ★Scientific Principle: When electromagnetic waves reach the surface of a metal conductor, reflection occurs, and at the same time, absorption loss is generated inside the conductor, hindering the continued transmission of electromagnetic wave energy, thereby achieving electromagnetic shielding. Metal shells and metal meshes can both serve as shielding bodies. The shielding performance is affected by factors such as the type of radiation source, material selection, structural form, and mesh gap size. The mesh size directly determines the shielding effect for electromagnetic waves of different frequencies.
- 0.9×0.7×1.0 0.9×0.7×1.0Dimensions (unit: m): 0.9×0.7×1.0 Brand: PopsciCat Model: PopsciCat-Wave-023 1. Materials: ① Platform: frame 2mm cold-rolled sheet, enclosure 2.0mm cold-rolled sheet, surface baked paint ② Tabletop: Kelaisi artificial stone, thickness ≥12mm ③ Instruction sign: 5mm thick acrylic UV inkjet printing ④ Shielding mesh cover: stainless steel welded metal mesh ⑤ Electrical control box: cold-rolled sheet baked paint box, containing control circuit, switching power supply, wiring terminals, etc. 2. Main Configuration: ① Electrical control: electrical logic control system, equipped with Guanjin® K1 PLC controller with protection dedicated for science exhibits ② Electromagnetic wave transmitting module ③ Signal receiving and status display device ④ Stainless steel metal shielding mesh covers, 2 sets ⑤ Start button assembly 3. Exhibition Requirements: ① Power requirement: AC100-240V, 50/60Hz 80W (standard three-wire socket) ② Installation foundation: direct placement ③ Entry passage: door frame size (width×height) ≥0.7m×1.9m, continuous turning interval in passage ≥1.5m ④ Maintenance access: not required
★Exhibit Content: Electromagnetic shielding principle and electromagnetic wave propagation characteristics ★Interaction: Electromechanical interaction ★Operation: Press the start button to activate the transmitter; first observe the receiver's signal performance without shielding, then place the metal mesh cover over the receiver, compare and observe the signal changes, and experience the electromagnetic shielding effect. ★Exhibit Description: The exhibit consists of a square platform, an electromagnetic wave transmitting module, a signal receiver, two sets of metal shielding mesh covers, and an integrated control panel. It is a recommended exhibit from the PopsciCat Exhibit Store. Two sets of metal mesh covers are symmetrically arranged on the tabletop, with the transmitting end and receiving end respectively set in the middle. The control panel integrates a start button and a status indicator module. When the visitor presses the start button, the transmitting device generates stable electromagnetic waves, and the receiver normally receives the signal and displays the corresponding working status; after placing the metal mesh cover over the receiver, the metal structure reflects and absorbs electromagnetic waves, and the receiver's signal is significantly weakened or even disappears. Through controlled experiments with and without shielding, the electromagnetic shielding effect of a metal enclosed structure is intuitively demonstrated, helping visitors understand the underlying logic of electromagnetic protection in daily life. ★Scientific Principle: Electromagnetic waves are a field form formed by alternating propagation of changing electric and magnetic fields in space, and are widely used in various electronic device scenarios such as communication and remote control. A closed shell made of metal conductors can reflect and absorb electromagnetic waves, blocking the induction and radiation of electromagnetic fields from the outside to the inside, so that the equipment inside the shell is not interfered with by external electromagnetic waves. This is the principle of electromagnetic shielding. The Faraday cage is a typical application of this principle. In daily life, protective facilities such as electromagnetic shielding rooms and shielding shells for electronic equipment all utilize the electromagnetic shielding properties of metals to ensure the stable operation of electronic equipment and information security.
Review
Principle Display: ★★★★ Interaction Effect: ★★★★ Ease of Installation: ★★★★★ Durability: ★★★★ Overall Rating: ★★★★