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目前多数普通中学的显微镜数量少,不能满足分组实验的需要。为了上好分组和演示实验,使学生能在短时间内看清所要观察的实物,我们经过多次试验将普通教学用的生物显微镜,改装成同时可供三人观察的简易三筒镜,提高了演示效率,现简介有关三筒镜的改装和优缺点: 制作原理反射原理,与潜望镜一样将物像反射在目镜上。制作材料薄的罐筒皮,普通家用镜片(制作小反光镜用),焊锡。制作方法在不损伤原有显微镜的任何零件的前提下,另制一个具有一个直立和两个分枝的镜筒套在
At present, most ordinary secondary schools have a small number of microscopes and cannot meet the needs of grouping experiments. In order to better group and demonstrate experiments so that students can see what they are observing in a short period of time, we have modified the biological microscope for general education into a simple three-cylinder mirror that can be observed by three people after many tests. Demonstration efficiency, is now introduced about the modification and advantages and disadvantages of the tri-cylindrical mirror: The principle of the production principle of reflection, like the periscope, reflects the object image on the eyepiece. Made of thin cans, ordinary household lenses (for small reflectors), solder. The manufacturing method is to create a lens barrel with one upright and two branches without damaging any part of the original microscope.