目前广大科技人员在普及科学技术知识和交流学术经验时常配合放映大量的幻灯片.这样做不仅加强了直观性和真实性;而且使形式更灵活多样,从而提高了宣传与教学效果.怎样自制黑白幻灯片呢?要自制35毫米黑白幻灯片并不难,设备简单,成本低亷,一张幻灯片只需要几分钱.现将制作的方法介绍如下:一、设备.暗室(或用晚上无光的房间)、红灯、印相机、 At present, most scientific and technical personnel often cooperate with screening a large number of slides in popularization of scientific and technological knowledge and exchange of academic experience, which not only enhances the visuality and authenticity but also makes the forms more flexible and diverse, thereby enhancing the publicity and teaching effects. Slide it? To make 35 mm black and white slide is not difficult, simple equipment, low cost, only a few cents a slide. Now the production methods are described below: First, equipment. Darkroom (or at night without Light room), red light, printed camera,