Water turbine e needle: o que têm em comum

1. Passo 1. Water turbine — evoluiu de — Water wheel. The turbine is a development of the water wheel.
2. Passo 2. Water wheel — faz parte de — Trip hammer. The shaft was turned by a water wheel.
3. Passo 3. Trip hammer — tem como parte — Came. Cams on the shaft lift the hammer.
4. Passo 4. Came — faz parte de — Sewing machine. Cams drive the fabric feed.
5. Passo 5. Sewing machine — tem como parte — Needle. A needle with the eye near its point.

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