Iron-Nail Bridge
Operation: 1. Press the "Power On" button, and the timer starts counting; 2. Within the specified time, use small iron nails to connect the left and right "bridge piers" to build the "bridge deck"; 3. Press the "Power Off" button and observe the phenomenon. Function Overview: The exhibit consists of two bridge piers made of electromagnets and several iron nails. The participant presses the power-on button, the digital display starts counting down, and the participant must complete the bridge deck connection with iron nails within the set time. When time is up, the electromagnet automatically powers off, or the electromagnet can be directly turned off via the power-off button. Scientific Principle: Why can small iron nails attract each other to form a "bridge deck"? The "bridge piers" on both sides are iron cores with coils wound around the surface, i.e., electromagnets. When powered off, the "bridge piers" have no magnetism, but when the coil is energized, it makes the iron core in the middle magnetic. At this time, when the small iron nails approach the "bridge pier", they will be attracted and also become magnetic. Because magnets have the characteristics of like poles repelling and opposite poles attracting, the iron nails can connect end-to-end between the two "bridge piers" to form a "bridge deck". The phenomenon in which these originally non-magnetic iron cores and iron nails exhibit magnetism under the action of a magnetic field is called magnetization. Electromagnetic chucks, solenoid valves, etc., all utilize magnetization. You can also try using a small magnet to magnetize a sewing needle to make a simple compass.
Options
- 0.9×0.6×1.12 0.9×0.6×1.12Overall Dimensions: 0.9×0.6×1.12 Brand: PopsciCat Model: PopsciCat-Medium-039 Materials: ①Base: 2.0mm cold-rolled steel plate, dimensions not less than 0.75×0.45×0.7m, surface baked paint (or electrostatic powder coating), reserved floor feet for later height adjustment and four-corner balance, reserved AC female socket position for power supply to electrical exhibits ②Tabletop: high-quality flame-retardant fiberglass material, total thickness with edges ≧100mm ③Instruction sign: acrylic UV high-precision inkjet printing, thickness ≧3mm ④Maintenance door: 2.0mm cold-rolled steel plate, surface baked paint (or electrostatic powder coating) ⑤Protective cover: cold-rolled steel plate with automotive paint Main Configuration: ①Electrical control: electrical logic control system, equipped with Inertia® K1 type PLC controller with protection specially for science exhibits ②Switching power supply: AC-DC S-60-12/24 input AC100-240V, 50/60Hz, output power 60W ③Button: self-resetting 22mm stainless steel metal button with ring light; LED voltage not higher than 12V to avoid high voltage leakage risk; mechanical life: 1 million times; protection level: IP67; protection method: waterproof. ④Electromagnetic coil: self-made ⑤Digital display: self-made Energy Requirements: AC100-240V, 50/60Hz 100W (standard three-wire socket)
Operation: 1. Press the "Power On" button, and the timer starts counting; 2. Within the specified time, use small iron nails to connect the left and right "bridge piers" to build the "bridge deck"; 3. Press the "Power Off" button and observe the phenomenon. Function Overview: The exhibit consists of two bridge piers made of electromagnets and several iron nails. The participant presses the power-on button, the digital display starts counting down, and the participant must complete the bridge deck connection with iron nails within the set time. When time is up, the electromagnet automatically powers off, or the electromagnet can be directly turned off via the power-off button. Scientific Principle: Why can small iron nails attract each other to form a "bridge deck"? The "bridge piers" on both sides are iron cores with coils wound around the surface, i.e., electromagnets. When powered off, the "bridge piers" have no magnetism, but when the coil is energized, it makes the iron core in the middle magnetic. At this time, when the small iron nails approach the "bridge pier", they will be attracted and also become magnetic. Because magnets have the characteristics of like poles repelling and opposite poles attracting, the iron nails can connect end-to-end between the two "bridge piers" to form a "bridge deck". The phenomenon in which these originally non-magnetic iron cores and iron nails exhibit magnetism under the action of a magnetic field is called magnetization. Electromagnetic chucks, solenoid valves, etc., all utilize magnetization. You can also try using a small magnet to magnetize a sewing needle to make a simple compass.