野外求生 -- 凸透鏡起火法

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Uploaded by on Jan 27, 2012

Full-HD 行車紀錄器拍攝

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Uploader Comments (ilantzou)

  • 挖屋

    大大

    你真厲害!!!

    小時候我有玩過

    不過都生不起火!!!

    沒想到放大鏡真的能生火

  • @Dragon20070921 把握要領,小朋友也可以在一分鐘內完成。watch?v=fun­­kmJfUxyQ 。

    1.一顆近中天的火熱太陽。2.一個焦距(曲率)正確的凸透鏡。­­3.多層結構(聚光打穿後可再往下傳導累積能量)。4.氣流擾­動­(自然風或吹氣增加助燃)。

    凸透鏡打穿報紙後可往旁邊移動,必要時也可拉近(因為可聚焦到下­­層結構)。

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