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怎样能清楚地观察到“布朗运动”,有关杂志曾介绍过不少办法,但在实际观察时,有的效果尚可,有的观察起来就较困难,现在我们介绍一种操作简便易行,观察效果相当明显的方法,具体做法如下: 先把硫磺(若用升华硫效果就更好)溶解于无水酒精,制成饱和溶液,再将澄清的饱和溶液倒入蒸馏水中,制成乳白色的悬浊液,滴几滴在载玻片上(注意:必须盖上盖玻片,以防因酒精和水的蒸发而很快干涸)。把载玻片置于载物台上后,用16(目镜)×40(物镜)的
How can we clearly observe the “Brown movement?” The relevant magazine has introduced many methods, but in actual observation, some effects are acceptable, and some observations are more difficult. Now we introduce a simple operation. Observe the obvious effect of the method, the specific approach is as follows: First sulfur (if sublimation sulfur is better) dissolved in anhydrous alcohol, made into a saturated solution, and then clarified saturated solution into distilled water, made of milky white Suspension, a few drops on the slide (Note: coverslips must be covered to prevent the alcohol and water from drying out quickly). After placing the slide on the stage, use 16 (eyepieces) × 40 (objective)