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一、丁达尔现象仪 材料 彩色胶卷暗盒五个、6.3V电珠及电珠座各一个、8cm×12cm有机玻璃一块(或用塑料片、三夹板)作底板、接线柱两个、导线若干。 制作 将一个暗盒盖用A、B胶固定在底板中间偏后处,再将灯珠座固定在它的中心,在珠座上焊上两段导线,使它穿过底板后分别和两接线柱相连,装上电珠(注意必须使电珠与底板垂直)。
First, the Dingdal phenomenon instrument material Color film cassette five, 6.3V beads and a beads one, 8cm × 12cm piece of plexiglass (or plastic sheet, plywood) for the bottom plate, two terminals, a number of wires. Making a cassette cover with A, B glue fixed in the back of the bottom of the center of the base plate, and then fix the lamp bead seat in the center of it, welding two pieces of wire on the ball seat so that it passes through the bottom plate and the two terminals respectively. Connect and install the beads (note that the beads must be perpendicular to the bottom plate).