Rain gauge e lead–acid battery: o que têm em comum

1. Passo 1. Rain gauge — faz parte de — Weather station. A rain gauge.
2. Passo 2. Weather station — tem como parte — Thermometer. A thermometer.
3. Passo 3. Thermometer — é feito de — Mercury. Mercury thermometers.
4. Passo 4. Mercury — faz parte de — Hydrometer. Old hydrometers used mercury or lead shot as the weight to keep them upright.
5. Passo 5. Hydrometer — é utilizado em — Lead–acid battery. A car battery's charge is checked with a hydrometer by the density of its acid.

Abrir Evothings