here are the Sigma symbol in physics | how to write or insert Sigma symbol in text copy paste ?
answer : Sigma symbol in lower case = σ
Sigma symbol in uppercase = Σ
so we have seen above that the symbol of “Sigma” in our 12th 11th physics written as text “Σ” or “σ” .
You can just copy and paste the symbol of Sigma here as “σ” in lower case and “Σ” in upper case in Microsoft word or in other file “σ” and also “Σ”