Stone-faced embankment slopes and smartphone: what they have in common

1. Step 1. Stone-faced embankment slopes — is part of — Levee. Slopes reinforced with stone or turf.
2. Step 2. Levee — is made of — Clay. Levees were built up of earth and clay.
3. Step 3. Clay — is material for — Spinning top. Or shaped from clay.
4. Step 4. Spinning top — works like — Gyroscope. A gyroscope is a top in a gimbal.
5. Step 5. Gyroscope — is part of — Smartphone. A MEMS gyroscope detects the rotation of the phone.

Open Evothings