在新编物理课本(甲种本第二册)中,“电场中等势线的描绘”是学生实验,其中用到的导电纸,用量较大,很多学校尚未配备,可用下列方法自制。一、用炭黑加适量胶水,搅匀后均匀地涂于纸上,干后即可用。二、用氯化银加适量胶水,搅匀后均匀地涂于纸上,晒干后即可用。三、用较软铅笔(如4B,6B等),在纸上均匀地涂一层即可。用上面三种方法制得的导电纸,经过使 In the new physics textbook (Grade A Book 2), “the depiction of the electric field medium potential line” is a student experiment. The conductive paper used in the book is used in a large amount. Many schools are not equipped, and they can be made by the following methods. 1. Add a proper amount of glue with carbon black, mix well and spread onto paper, and use it after drying. Secondly, add appropriate amount of glue with silver chloride, stir evenly on paper, and then use it after drying. Third, with a softer pencil (such as 4B, 6B, etc.), you can evenly coat a layer of paper. The conductive paper made by the above three methods is passed through