Rain collecting funnel e rocket: o que têm em comum

1. Passo 1. Rain collecting funnel — faz parte de — Rain gauge. It collects precipitation over a known area.
2. Passo 2. Rain gauge — é feito de — Bronze. Korean rain gauges (1441) are bronze.
3. Passo 3. Bronze — é material para — Heron’s aeolipile. The aeolipile is a bronze ball.
4. Passo 4. Heron’s aeolipile — utiliza — Reaction force. Jets of steam spin the ball by reaction force.
5. Passo 5. Reaction force — é utilizado em — Rocket. A rocket moves by reaction force.

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