Boomerang and rock drill: what they have in common

1. Step 1. Boomerang — uses — Angular momentum. Gyroscopic precession brings the boomerang back.
2. Step 2. Angular momentum — is used in — Gyroscope. The rotor keeps the direction of its axis.
3. Step 3. Gyroscope — is part of — Torpedo. Obry’s gyroscope keeps the course.
4. Step 4. Torpedo — uses — Compressed air. The first torpedoes ran on compressed air.
5. Step 5. Compressed air — is used in — Rock drill. Pneumatics.

Open Evothings