Cera de abelha e Vaso de Dewar: o que têm em comum

1. Passo 1. Cera de abelha — é material para — Vela. Expensive candles were made of beeswax.
2. Passo 2. Vela — tem como parte — Wick. A candle’s wick.
3. Passo 3. Wick — faz parte de — Oil lamp. The wick feeds oil to the flame.
4. Passo 4. Oil lamp — evoluiu para — Incandescent light bulb. The electric lamp replaced oil and gas lamps.
5. Passo 5. Incandescent light bulb — utiliza — Vacuum. The bulb was evacuated so the filament would not burn out.
6. Passo 6. Vacuum — é utilizado em — Vaso de Dewar. A vacuum.

Abrir Evothings