Measuring wheel and fitness tracker: what they have in common

1. Step 1. Measuring wheel — is part of — Planimeter. A counting wheel integrates the area.
2. Step 2. Planimeter — uses — Calculus. Mechanical integration.
3. Step 3. Calculus — is used in — Newton’s laws. Mechanics built on calculus.
4. Step 4. Newton’s laws — is used in — Accelerometer. The sensor measures the force of inertia.
5. Step 5. Accelerometer — is part of — Fitness tracker. A pedometer.

Open Evothings