Air-Viscosity Frisbee
★Exhibit Content: Viscous Force ★Interaction: Electromechanical Interaction ★Operation: Turn on the power, and the upper driving disk spins rapidly while the lower driven disk remains stationary. Turn the handwheel to reduce the distance between the two disks. It can be seen that as the two disks gradually approach each other, the driven disk also starts to rotate in the same direction. Change the motor speed, and the speed of the driven disk changes accordingly. ★Exhibit Description: The exhibit consists of a display stand, a transparent cover, disks, a motor, and an adjustment mechanism. A long cylindrical transparent device is set on the stand, containing two parallel disks that are not connected. When the participant presses the start button, the motor drives the upper disk to rotate, and the lower disk is observed to remain stationary. This is because the lower disk is too far from the upper disk and lacks sufficient viscous force, so it does not rotate. When the participant adjusts the height of the central axis to reduce the distance between the disks to a certain extent, the lower disk is observed to start rotating along with the upper disk. This is because air has viscosity, and when the disks are close, their motion states influence each other. ★Scientific Principle: The motion of the driving disk is transmitted to the driven disk, and the medium for this transmission process is the air between the two disks. This layer of air can be divided into many thin layers. From top to bottom, the speed of each air layer decreases successively. The air in contact with the driving disk has the highest speed, and the air in contact with the driven disk has the lowest speed. Due to the different speeds of the air layers, there is relative motion between the layers, resulting in friction. This internal friction within a fluid is called viscous force. It is precisely because of the internal friction between the disk surfaces and the air layers, and between adjacent air layers, that the air layers are driven to rotate one by one from top to bottom, until the driven disk is also driven to rotate. Why does the driven disk not move when the distance between the disks is relatively large? This is because when the speed of the air layer decreases from top to bottom to a certain thickness, the speed becomes zero, and this thickness is less than the distance between the disks. Therefore, the lower air layers down to the driven disk all have zero speed, with no relative motion between them, and thus no friction, so the driven disk does not move. The shapes of cars, airplanes, and ships are designed to be streamlined to reduce the viscous resistance they experience in air or water.
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- Φ1.0*1.25m Φ1.0*1.25mDimensions (unit: m): Φ1.0*1.25m Brand: KexMall Model: PopsciCat-mechanics-141 1. Materials: ① Stand: frame 2mm cold-rolled steel plate, enclosure 2.0mm cold-rolled steel plate with color-baked finish, rounded without sharp edges ② Tabletop: Kelesi artificial stone, thickness ≥12mm, with flame-retardant board underneath ③ Instruction sign, graphic panel: acrylic UV printing ④ Maintenance door: 2.0mm cold-rolled steel plate with surface baked finish ⑤ Handwheel: transparent acrylic + 304 stainless steel ⑥ Protective cover: transparent acrylic + custom-colored acrylic as needed ⑦ Electrical control box: cold-rolled steel plate with baked finish, containing control circuit, switching power supply, circuit breaker, terminal blocks, etc. 2. Main Configuration: ① Electrical control: electrical logic control system, equipped with Guanjian® K2 type PLC controller with protection specially for science exhibits ② Drive device: HF-PANDA gear motor + mounting bracket ③ Demonstration device: custom acrylic disks + metal lifting mechanism ④ Frequency converter: voltage: AC100-240V, 50/60Hz; frequency: ≥50HZ; 3. Installation Requirements: ① Power requirement: AC100-240V, 50/60Hz200W (standard three-wire socket) ② Installation base: place directly ③ Entry passage: door frame dimensions (width × height) ≧1.0m×2.0m, continuous turning interval ≧2m ④ Maintenance access: not required
★Exhibit Content: Viscous Force ★Interaction: Electromechanical Interaction ★Operation: Turn on the power, and the upper driving disk spins rapidly while the lower driven disk remains stationary. Turn the handwheel to reduce the distance between the two disks. It can be seen that as the two disks gradually approach each other, the driven disk also starts to rotate in the same direction. Change the motor speed, and the speed of the driven disk changes accordingly. ★Exhibit Description: The exhibit consists of a display stand, a transparent cover, disks, a motor, and an adjustment mechanism. A long cylindrical transparent device is set on the stand, containing two parallel disks that are not connected. When the participant presses the start button, the motor drives the upper disk to rotate, and the lower disk is observed to remain stationary. This is because the lower disk is too far from the upper disk and lacks sufficient viscous force, so it does not rotate. When the participant adjusts the height of the central axis to reduce the distance between the disks to a certain extent, the lower disk is observed to start rotating along with the upper disk. This is because air has viscosity, and when the disks are close, their motion states influence each other. ★Scientific Principle: The motion of the driving disk is transmitted to the driven disk, and the medium for this transmission process is the air between the two disks. This layer of air can be divided into many thin layers. From top to bottom, the speed of each air layer decreases successively. The air in contact with the driving disk has the highest speed, and the air in contact with the driven disk has the lowest speed. Due to the different speeds of the air layers, there is relative motion between the layers, resulting in friction. This internal friction within a fluid is called viscous force. It is precisely because of the internal friction between the disk surfaces and the air layers, and between adjacent air layers, that the air layers are driven to rotate one by one from top to bottom, until the driven disk is also driven to rotate. Why does the driven disk not move when the distance between the disks is relatively large? This is because when the speed of the air layer decreases from top to bottom to a certain thickness, the speed becomes zero, and this thickness is less than the distance between the disks. Therefore, the lower air layers down to the driven disk all have zero speed, with no relative motion between them, and thus no friction, so the driven disk does not move. The shapes of cars, airplanes, and ships are designed to be streamlined to reduce the viscous resistance they experience in air or water.
- Φ1.2*1.25m · Style 1 Φ1.2*1.25mDimensions (unit: m): Φ1.2*1.25m Brand: KexMall Model: PopsciCat-mechanics-142 1. Materials: ① Stand: frame 2mm cold-rolled steel plate, enclosure 2.0mm cold-rolled steel plate with color-baked finish, rounded without sharp edges ② Tabletop: Kelesi artificial stone, thickness ≥12mm, with flame-retardant board underneath ③ Instruction sign, graphic panel: acrylic UV printing ④ Maintenance door: 2.0mm cold-rolled steel plate with surface baked finish ⑤ Handwheel: transparent acrylic + 304 stainless steel ⑥ Protective cover: transparent acrylic + custom-colored acrylic as needed ⑦ Electrical control box: cold-rolled steel plate with baked finish, containing control circuit, switching power supply, circuit breaker, terminal blocks, etc. 2. Main Configuration: ① Electrical control: electrical logic control system, equipped with Guanjian® K2 type PLC controller with protection specially for science exhibits ② Drive device: gear motor + mounting bracket ③ Demonstration device: custom acrylic disks + metal lifting mechanism ④ Frequency converter: voltage: AC100-240V, 50/60Hz; frequency: ≥50HZ; 3. Installation Requirements: ① Power requirement: AC100-240V, 50/60Hz200W (standard three-wire socket) ② Installation base: place directly ③ Entry passage: door frame dimensions (width × height) ≧1.0m×2.0m, continuous turning interval ≧2m ④ Maintenance access: not required
★Exhibit Content: Viscous Force ★Interaction: Electromechanical Interaction ★Operation: Turn on the power, and the upper driving disk spins rapidly while the lower driven disk remains stationary. Turn the handwheel to reduce the distance between the two disks. It can be seen that as the two disks gradually approach each other, the driven disk also starts to rotate in the same direction. Change the motor speed, and the speed of the driven disk changes accordingly. ★Exhibit Description: The exhibit consists of a display stand, a transparent cover, disks, a motor, and an adjustment mechanism. A long cylindrical transparent device is set on the stand, containing two parallel disks that are not connected. When the participant presses the start button, the motor drives the upper disk to rotate, and the lower disk is observed to remain stationary. This is because the lower disk is too far from the upper disk and lacks sufficient viscous force, so it does not rotate. When the participant adjusts the height of the central axis to reduce the distance between the disks to a certain extent, the lower disk is observed to start rotating along with the upper disk. This is because air has viscosity, and when the disks are close, their motion states influence each other. ★Scientific Principle: The motion of the driving disk is transmitted to the driven disk, and the medium for this transmission process is the air between the two disks. This layer of air can be divided into many thin layers. From top to bottom, the speed of each air layer decreases successively. The air in contact with the driving disk has the highest speed, and the air in contact with the driven disk has the lowest speed. Due to the different speeds of the air layers, there is relative motion between the layers, resulting in friction. This internal friction within a fluid is called viscous force. It is precisely because of the internal friction between the disk surfaces and the air layers, and between adjacent air layers, that the air layers are driven to rotate one by one from top to bottom, until the driven disk is also driven to rotate. Why does the driven disk not move when the distance between the disks is relatively large? This is because when the speed of the air layer decreases from top to bottom to a certain thickness, the speed becomes zero, and this thickness is less than the distance between the disks. Therefore, the lower air layers down to the driven disk all have zero speed, with no relative motion between them, and thus no friction, so the driven disk does not move. The shapes of cars, airplanes, and ships are designed to be streamlined to reduce the viscous resistance they experience in air or water.
- Φ1.2*1.25m · Style 2 Φ1.2*1.25mDimensions (unit: m): Φ1.2*1.25m Brand: KexMall Model: PopsciCat-mechanics-143 1. Materials: ① Stand: frame 2mm cold-rolled steel plate, enclosure 2.0mm cold-rolled steel plate with color-baked finish, rounded without sharp edges ② Tabletop: Kelesi artificial stone, thickness ≥12mm, with flame-retardant board underneath ③ Instruction sign, graphic panel: acrylic UV printing ④ Maintenance door: 2.0mm cold-rolled steel plate with surface baked finish ⑤ Handwheel: transparent acrylic + 304 stainless steel ⑥ Protective cover: transparent acrylic + custom-colored acrylic as needed ⑦ Electrical control box: cold-rolled steel plate with baked finish, containing control circuit, switching power supply, circuit breaker, terminal blocks, etc. 2. Main Configuration: ① Electrical control: electrical logic control system, equipped with Guanjian® K2 type PLC controller with protection specially for science exhibits ② Drive device: HF-PANDA gear motor + mounting bracket ③ Demonstration device: custom acrylic disks + metal lifting mechanism ④ Frequency converter: voltage: AC100-240V, 50/60Hz; frequency: ≥50HZ; 3. Installation Requirements: ① Power requirement: AC100-240V, 50/60Hz200W (standard three-wire socket) ② Installation base: place directly ③ Entry passage: door frame dimensions (width × height) ≧1.0m×2.0m, continuous turning interval ≧2m ④ Maintenance access: not required
★Exhibit Content: Viscous Force ★Interaction: Electromechanical Interaction ★Operation: Turn on the power, and the upper driving disk spins rapidly while the lower driven disk remains stationary. Press the button to reduce the distance between the two disks. It can be seen that as the two disks gradually approach each other, the driven disk also starts to rotate in the same direction. Change the motor speed, and the speed of the driven disk changes accordingly. ★Exhibit Description: The exhibit consists of a display stand, a transparent cover, disks, a motor, and an adjustment mechanism. A long cylindrical transparent device is set on the stand, containing two parallel disks that are not connected. When the participant presses the start button, the motor drives the upper disk to rotate, and the lower disk is observed to remain stationary. This is because the lower disk is too far from the upper disk and lacks sufficient viscous force, so it does not rotate. When the participant adjusts the height of the central axis to reduce the distance between the disks to a certain extent, the lower disk is observed to start rotating along with the upper disk. This is because air has viscosity, and when the disks are close, their motion states influence each other. ★Scientific Principle: The motion of the driving disk is transmitted to the driven disk, and the medium for this transmission process is the air between the two disks. This layer of air can be divided into many thin layers. From top to bottom, the speed of each air layer decreases successively. The air in contact with the driving disk has the highest speed, and the air in contact with the driven disk has the lowest speed. Due to the different speeds of the air layers, there is relative motion between the layers, resulting in friction. This internal friction within a fluid is called viscous force. It is precisely because of the internal friction between the disk surfaces and the air layers, and between adjacent air layers, that the air layers are driven to rotate one by one from top to bottom, until the driven disk is also driven to rotate. Why does the driven disk not move when the distance between the disks is relatively large? This is because when the speed of the air layer decreases from top to bottom to a certain thickness, the speed becomes zero, and this thickness is less than the distance between the disks. Therefore, the lower air layers down to the driven disk all have zero speed, with no relative motion between them, and thus no friction, so the driven disk does not move. The shapes of cars, airplanes, and ships are designed to be streamlined to reduce the viscous resistance they experience in air or water.
Review
Principle Display: ★★★★ Interaction Effect: ★★★★ Ease of Installation: ★★★★★ Durability: ★★★★ Overall Rating: ★★★★