Reply To: Treatment of current measurements in formulas
I'm posting again to acknowledge how very difficult it can be to determine whether a letter is a variable or an abbreviation, because print can use the same letter in both roles (i.e., A for "amperes" and also A for "unknown quantity of amperes").
It can require a lot of analysis on the transcriber's part to determine when a single letter is an abbreviation (as opposed to a variable) in a given mathematical expression.
–Kyle