MHO BETTER

Barry Tunick and Sylvia Bursztyn, please note that an “ohm” measures resistance and a “mho” measures impedance (Puzzler, Jan. 25). The two are not the same but are reciprocals of each other.

This can cause a bit of consternation when trying to fit “mho” where you had intended “ohm”!

KATE REEVES

Fullerton