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我们利用有机玻璃盒密封篦麻油和头发屑做成电力线演示器,这种演示器制作容易,演示方便,投影清晰,可长期保存反复使用。一、制作材料; 1.有机玻璃片,厚度1—3mm均可,面积为50×40(mm)~2共四块(也可以用废旧的三角板但需用棉花沾牙膏将发毛处抛光。再准备一些长50mm、宽4mm、厚4—5mm的有机玻璃条(也可以用有机玻璃片粘叠成)。 2.篦麻油30毫升。 3.剪碎的头发屑(越碎效果越好)。
We use plexiglass boxes to seal castor oil and hair crumbs into a power line demonstrator. This demonstrator is easy to make, easy to demonstrate, clear in projection, and can be used repeatedly for long-term preservation. First, the production of materials; 1. Plexiglass sheet, thickness 1-3mm can be, an area of 50 × 40 (mm) ~ 2 a total of four (can also use the old triangle but need to use cotton paste toothpaste to hair hair polishing. Prepare some plexiglass strips that are 50mm long, 4mm wide, and 4-5mm thick (also can be laminated with plexiglass sheets) 2. Castor oil 30ml 3. Hairshredding (the better the more broken).