Stethoscope e watt steam engine: o que têm em comum

1. Passo 1. Stethoscope — é utilizado em — Blood pressure monitor. Listening for the Korotkov sounds.
2. Passo 2. Blood pressure monitor — evoluiu de — Manometer. A blood pressure monitor is a manometer connected to a cuff: it measures the air pressure that squeezes the artery.
3. Passo 3. Manometer — faz parte de — Caldeira. The gauge on a boiler shows the steam pressure — without it the boiler could explode.
4. Passo 4. Caldeira — faz parte de — Watt steam engine. The boiler supplies steam.

Abrir Evothings