( ∈ vs. ε): Why Physicists Use 2 Forms of the Greek Letter Epsilon

When I learned Maxwell’s equations in college, I was taught to draw the permittivity with a Greek letter epsilon that looked like a c with a line in it and not like a backwards 3 like usual. 

Table Of ContentsWhy Physicists Use 2 Forms of the Greek Letter EpsilonImage ReferencesReferenceWhy Physicists Use 2 Forms of the Greek Letter Epsilon

It turns out that this alternative epsilon is a mistake that happened when an English printing company accidentally u...