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舊君士坦丁诺亙(在哈美喇尼查科境內)第二中学教員雅科夫列夫倡議用一個簡單的照像方法,來製造為中學實驗適用的衍射光柵。在一張大小為620毫米×830毫米的紙上,精細地晝160條線,線的寬度為3毫米,线的間隔為2毫米。線的寬度必須晝的完全相同,線间的間隔也必須保持相等。晝時必須採用冲淡了的墨汁,以便乾後没有光澤。 為了获得每厘米有50、100或200條線的光柵,我們應該用小型照相機或類似的照相机來拍下这製好的圖,並计算由物鏡光
Old Constantine (on the territory of Chameira Nepal) Secondary Yakovlev teacher Yakovlev proposed using a simple photographic method to make diffraction gratings suitable for high school experiments. On a piece of paper 620 mm x 830 mm in size, there are 160 lines sharply in daytime, the line width is 3 mm, and the line interval is 2 mm. The width of the lines must be exactly the same for the day and the intervals between the lines must also be equal. Diluted ink must be used during the day so that there is no luster after drying. In order to get a grating with 50, 100 or 200 lines per centimeter, we should take a small camera or a similar camera to take a good picture of this and calculate the amount of light