Manhole cover issue
- In stock with stable lead times — single units or complete sets
- Size, appearance and interaction can be adapted to the museum’s theme
- For science museums, campus science rooms, community science centers and mobile science museums
- Export packing and overseas on-site installation support
Why is the manhole cover round? - Customization of Science Museum Exhibitions, Campus Community Science Popularization Equipment, Source Manufacturer of Science Exhibitions Description and Introduction of Scientific Principles:
A square lid can fit into a hole of the same size as a square because the diagonal of the square hole is greater than its side length. And a circular lid cannot fall into a circular hole of the same size, because the size of the circle is fixed, that is, the distance between two parallel lines tangent to the circle is fixed and unchanged. It utilizes the principle that all diameters within the same circle are equal. Only circular manhole covers cannot find diagonal lines, so no matter how the manhole cover is moved, the cover will not fall off. This ensures the safety of workers working underneath!
Main technical parameters of exhibits:
Dimensions (unit: m): 1.6 × 0.6 × 1.4 1. exhibits materials: ① Booth: 30 square tube frame, 1.2mm cold-rolled plate enclosure, surface painted ② Tabletop: Cambert board, thickness ≥ 10mm ③ Instruction board, graphic board: acrylic UV spray painted 2. Main configuration: none 3. Energy requirements: not required
Principle explanation and demonstration video: