Petrol and transformer: what they have in common

1. Step 1. Petrol — is used in — Carburettor. It mixes petrol with air.
2. Step 2. Carburettor — uses — Venturi effect (Bernoulli’s principle). In the throat of the venturi the pressure drops and draws in petrol.
3. Step 3. Venturi effect (Bernoulli’s principle) — is used in — De Laval nozzle. The nozzle accelerates the gas.
4. Step 4. De Laval nozzle — evolved from — Steam turbine. De Laval invented the nozzle for a steam turbine.
5. Step 5. Steam turbine — is part of — Nuclear power plant. Steam turns the turbines — as at a thermal station.
6. Step 6. Nuclear power plant — has part — Transformer. Transformers step up the voltage so the plant's power can travel far.

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