Lemon Battery

레몬을 이용하여 전기가 만들어지는 과정을 이해하며 전구에 불이 들어오는 것을 관찰한다.

2 lemons, 3 copper wires, 2 large paper clips, 2 coins, a miniature bulb

1. First, attach one of the paperclips to a wire. Then attach a coin to a second wire. Attach another coin to one end of the third wire, and a paperclip to the other end.           2. Squeeze and roll two lemons to loosen the pulp inside. 3. Make two small cuts in the skins of both lemons an inch or so apart. 4. Put the paper clip that is attached to the wire and the coin into one of the cuts until you get to the juicy part of the lemon.           5. Stick the coin into a hole in the other lemon. 6. Put the other paper clip into the second hole of the lemon with the coin. Then put the last coin into the last open hole.           7. Connect the free ends of the wires to the bottom of the miniature bulb.       8. Watch how the lemons make enough electricity to turn the miniature bulb on. If you've hooked everything up and the miniature bulb isn't lighting up, try switching the wires.

Here's how this lemon battery works. There's a chemical reaction between the steel in the paper clip and the lemon juice. There's also a chemical reaction between the copper in the coin and the lemon juice. These two chemical reactions push electrons through the wires. Because the two metals are different, the electrons get pushed harder in one direction than the other. If the metals were the same, the push would be equal and no electrons would flow. The electrons flow in one direction around in a circle and then come back to the lemon battery. While they flow through the miniature bulb, they make it work. This flow is called electric current. - 서로 다른 성질의 두가지 금속 물질과 레몬 즙이 화학 반응을 일으켜 전기를 만들어 내어 전구의 불빛을 밝힌다. 구리 선을 통해 전기는 전구의 불빛을 밝히면 계속해서 흐르게 되는 것이다.