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如何制作冰透镜

更新时间: 2020-07-01 00:00:00     

1、在三个碗内放上质量不等的水,再将碗放入冰箱冷冻室使水结冰;

2、待其结冰后将碗取出,在碗的外部浇一些热水,取出碗形冰块,靠手的温度把冰透镜磨成形;

3、点燃蜡烛,放至远处,在冰透镜后竖立白纸,使透过冰透镜的光线会聚在纸上,并不断地调整白纸的位置,使之能找到最亮,最清晰的点;

4、用刻度尺测出该点到冰透镜的距离即为焦距记录。

关键词: 如何 制作 透镜

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