Rain gauge and railway track: what they have in common

1. Step 1. Rain gauge — is part of — Weather station. A rain gauge.
2. Step 2. Weather station — uses — Euclidean geometry. Instruments are set up on a site according to a standard.
3. Step 3. Euclidean geometry — is used in — Geodesic dome. The sphere is divided into triangles.
4. Step 4. Geodesic dome — has part — Truss. A triangular grid.
5. Step 5. Truss — is part of — Truss bridge. Trusses.
6. Step 6. Truss bridge — uses — Railway track. Railway bridges.

Open Evothings