富蘭克林的風(fēng)箏實(shí)驗(yàn)課件(nx)(完整版)
【正文】 Condenser Instructions ? A small cross of two pieces of light wood. ? Tie the corners of a handkerchief to the points of the cross . ? Add a tail to the frame . ? Tie a long string to the cross. ? Fix a sharp piece of metal to the top of the longer stick of the cross. ? Fasten a key to the end of the long string. ? Tie a silk ribbon to the string. ? Connect a condenser to the end of the string. The making process (過(guò)程 ) Introduction of the experiment. The process of the experiment Tips of doing the experiment Para1 Para23 Para46 Main i
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