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物理是一门实验科学,精彩的物理实验使我们的课堂变得更生动.作为一名中学物理教师,笔者在课堂演示实验中经常遇到这样的难题:精心设计好的实验很难让全班同学都能观察到.这种情况在光学实验中更为突出,因为很多光学实验只能在特殊的位置和特殊角度才能观察到实验现象.笔者最近用家用数码摄像机(简称 DV)辅助实验取得了较好的效果,将 DV 与电视机或投影仪相连,使电视机或投影仪上的图像与 DV 液晶屏上的图像同步,这样 DV 就可以摆放在任何的恰当位置向全班展示实验现象了.由于 DV 并不是实验仪器,只要是
Physics is an experimental science. Exciting physics experiments make our classrooms more vivid. As a middle school physics teacher, the author often encountered such problems in classroom demonstration experiments: Well-designed experiments are difficult to make the whole class Students can observe this situation is more prominent in optical experiments, because many optical experiments can only observe the experimental phenomenon in a special location and special angle. I recently obtained home-use digital video camera (DV) assisted experiment Better results, connect the DV to the TV or projector, synchronize the image on the TV or projector with the image on the DV LCD screen, so that the DV can be placed in any appropriate position to show the experimental phenomenon to the whole class. Because DV is not an experimental instrument, as long as it is