Peep at the Leopard Through a Tube
Operation: 1. Look directly at the display screen. Can you see the video being played? 2. Look at the screen through the "magnifying glass". Is the hidden image on the display screen clear at a glance? Exhibit Overview: The exhibit consists of a multimedia playback system, a liquid crystal display device (specially treated), and a "magnifying glass" observation device. Utilizing the imaging characteristics of the LCD screen, the LCD screen has been specially treated. When viewed directly, only a white area can be seen on the screen, but when viewed through the "magnifying glass", the animated content can be clearly seen. Scientific Principle: Why does the white LCD screen display dynamic images through the "magnifying glass"? Inside the "magnifying glass" is actually an important component of the LCD display—a polarizer. There are two polarizers in an LCD display: one is the incident polarizer, and the other is the exit polarizer. When the polarization directions of the incident polarizer and the exit polarizer are at a 90° angle, applying voltage to the liquid crystal will block light from exiting, and no voltage will allow light to exit. When the incident polarizer and the exit polarizer are parallel, applying voltage to the liquid crystal will allow light to exit, and no voltage will block the light. Therefore, when a layer of polarizer is missing from the screen, we cannot see the image.
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- 0.9×0.6×1.06 0.9×0.6×1.06Overall Dimensions: 0.9×0.6×1.06 Brand: KexMall Model: PopsciCat-Medium-016 Materials: ① Base: 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 ② Tabletop: high-quality flame-retardant fiberglass reinforced plastic, total thickness with edges ≥100mm ③ Instruction sign: acrylic UV high-precision inkjet printing, thickness ≥3mm ④ Maintenance door: 2.0mm cold-rolled steel plate, surface baked paint (or electrostatic powder coating) ⑤ Leakage switch Power Requirements: AC100-240V, 50/60Hz 200W (standard three-wire socket)
Operation: 1. Look directly at the display screen. Can you see the video being played? 2. Look at the screen through the "magnifying glass". Is the hidden image on the display screen clear at a glance? Exhibit Overview: The exhibit consists of a multimedia playback system, a liquid crystal display device (specially treated), and a "magnifying glass" observation device. Utilizing the imaging characteristics of the LCD screen, the LCD screen has been specially treated. When viewed directly, only a white area can be seen on the screen, but when viewed through the "magnifying glass", the animated content can be clearly seen. Scientific Principle: Why does the white LCD screen display dynamic images through the "magnifying glass"? Inside the "magnifying glass" is actually an important component of the LCD display—a polarizer. There are two polarizers in an LCD display: one is the incident polarizer, and the other is the exit polarizer. When the polarization directions of the incident polarizer and the exit polarizer are at a 90° angle, applying voltage to the liquid crystal will block light from exiting, and no voltage will allow light to exit. When the incident polarizer and the exit polarizer are parallel, applying voltage to the liquid crystal will allow light to exit, and no voltage will block the light. Therefore, when a layer of polarizer is missing from the screen, we cannot see the image.