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《探究凸透镜成像规律》是初中光学部分的重难点,我们实验室原来的光具座器材,它们有这样几个不足之处:1.点燃的蜡烛长时间燃烧,会污染室内的空气,使实验室内的同学们感到不舒服,划燃火柴点燃蜡烛时会产生呛鼻的有毒气体,吹灭后的蜡烛也会产生长长的白烟,这些物质会对同学们的身体造成一定伤害。如果操作不当还有引起火灾的安全隐患。2.在我们探究成像规律的时候,飘忽不定的烛焰在光屏上的像也就很不稳定,清晰度受到很大的影响。由于不是很清晰,所成的像不容易判定倒正。
“Investigating the law of convex lens imaging” is a difficult part of the junior high school optical parts, our laboratory original optical bench equipment, they have several deficiencies: 1. Burning candles burning for a long time, will pollute the indoor air so that the experiment Indoor classmates feel uncomfortable, burning a matchstick lit candles will produce toxic gas nose, after the blown candles also have long white smoke, these substances will cause some damage to the students’ health. If you do not operate properly there are potential safety hazards caused by the fire. 2. When we explore the law of imaging, erratic candle flame in the light of the screen is also very unstable, sharpness is greatly affected. Because it is not very clear, the resulting image is not easy to judge.