Magdeburg Hemisphere Experiment
Operation: 1. Cover the hemispheres, press the "Start" button, wait for the vacuum, and try to pull the hemispheres apart. 2. Bring the rubber hemispheres together, press firmly to expel the air inside, then pull them apart with force, and think about why it takes a lot of force to pull them apart. Function Overview: The exhibit consists of a display stand, a vacuum pump, metal Magdeburg hemispheres, an intact rubber hemisphere, and a rubber hemisphere with a hole punctured in it. Visitors learn about the existence of atmospheric pressure by experiencing the hemisphere experiment. Scientific Principle: In 1654, Otto von Guericke, then mayor of Magdeburg, conducted a scientific experiment in Regensburg of the Roman Empire (now Regensburg, Germany) to prove the existence of a vacuum. This experiment is also called the "Magdeburg hemispheres" experiment after Guericke's title. The two hemispheres used in the experiment at that time are still preserved in the Deutsches Museum in Munich. Today, replicas for teaching purposes are used to demonstrate the principle of air pressure. Their volume is much smaller than the original hemispheres. After evacuating the space between the hemispheres, it no longer takes more than ten horses; some can be pulled apart by just four people. The Magdeburg hemispheres experiment proves that atmospheric pressure exists and is very strong. In the experiment, the air inside the two hemispheres is removed, reducing the number of air particles inside. The atmosphere outside presses the two hemispheres tightly together, making them difficult to separate. The more air is removed, the greater the pressure.
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- 0.9×0.6×1.10 0.9×0.6×1.10Overall Dimensions: 0.9×0.6×1.10 Brand: KexMall Model: PopsciCat-Medium-061 Materials: ① Display stand: 2.0mm cold-rolled steel plate, dimensions not less than 0.75×0.45×0.7m, surface baked paint (or electrostatic powder coating), reserved foot openings for later height adjustment and four-corner balance, reserved AC female socket position for power supply to electrical exhibits ② Tabletop: high-quality flame-retardant fiberglass reinforced plastic, total thickness with edges ≧100mm ③ Instruction sign: acrylic UV high-precision printing, thickness ≧3mm ④ Maintenance door: 2.0mm cold-rolled steel plate, surface baked paint (or electrostatic powder coating) ⑤ Bracket: acrylic ⑥ Hemispheres: cast iron Main Configuration: ① Electrical control: electrical logic control system, equipped with Inertia® K1 special PLC controller with protection for science exhibits ② Switching power supply: AC-DC S-60-12/24 input AC100-240V, 50/60Hz, output power 60W ③ Button: 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. ④ Vacuum pump: low-noise vacuum pump Power Requirements: AC100-240V, 50/60Hz 200W (standard three-wire socket)
Operation: 1. Cover the hemispheres, press the "Start" button, wait for the vacuum, and try to pull the hemispheres apart. 2. Bring the rubber hemispheres together, press firmly to expel the air inside, then pull them apart with force, and think about why it takes a lot of force to pull them apart. Function Overview: The exhibit consists of a display stand, a vacuum pump, metal Magdeburg hemispheres, an intact rubber hemisphere, and a rubber hemisphere with a hole punctured in it. Visitors learn about the existence of atmospheric pressure by experiencing the hemisphere experiment. Scientific Principle: In 1654, Otto von Guericke, then mayor of Magdeburg, conducted a scientific experiment in Regensburg of the Roman Empire (now Regensburg, Germany) to prove the existence of a vacuum. This experiment is also called the "Magdeburg hemispheres" experiment after Guericke's title. The two hemispheres used in the experiment at that time are still preserved in the Deutsches Museum in Munich. Today, replicas for teaching purposes are used to demonstrate the principle of air pressure. Their volume is much smaller than the original hemispheres. After evacuating the space between the hemispheres, it no longer takes more than ten horses; some can be pulled apart by just four people. The Magdeburg hemispheres experiment proves that atmospheric pressure exists and is very strong. In the experiment, the air inside the two hemispheres is removed, reducing the number of air particles inside. The atmosphere outside presses the two hemispheres tightly together, making them difficult to separate. The more air is removed, the greater the pressure.