有些物理教师习惯地将电动势代号“”读作希腊字母“ε”的音“epsilon(汉语拼音),其实这是不对的。让我们来看看电动势的英文名称“electromotive force”它的第一个字母是e,可见电动势的代号“”是取了它的英文名称第一个字母,而不是希腊字母“ε”。“”是“E”的园体行书大写。中学物理中介电常数的代号才是“ε”(希腊字母),介电常数的英文名称是“dielectricconstant”。可见,它的代号“ε”不是用它的 Some physics teachers used to read “emblem” of the Greek letter “ε” as “epsilon” (pinyin), which is actually incorrect.Let us take a look at the first of its English names, “electromotive force” The letter is e, we can see the emblem of the emblem “” is taken from the first letter of its English name, rather than the Greek letter “ε.” “” Is “E” Is “ε” (Greek letter) and the English name for dielectric constant is “dielectricconstant.” It can be seen that its code name “ε” is not used