注目の話題: 家に帰るのが苦痛、ストレス。離婚したい。; 助けてください、もう無理です; 馬鹿な子に「馬鹿」と言われたくない

science,math and English

No.83　11/11/12 17:02
名無し0 ( 50代 ♂ ) あ+あ-

【Electric battery made from charcoal】

① At first,we cut out of the aluminium foil.It has to be one size smaller than what is called a paper towel.

②We unfold the what is called the paper towel and let dense salty water sink into it enough.

③ We wrap the paper towel around the charcoal and moreover bind the aluminium foil around it.

④ We put a rubber band around a end of the charcoal.

⑤ We put an end of the miniature bulb between the rubber band and the charcoal.

⑥ We put the other end of the miniature bulb the aluminium foil, and the miniature bulb is lit up.💡