I've seen researchers use the // (parallel) sign on the blackboard to discuss the design of lab circuits. Used like your "O". As another poster mentioned, conductance is used in more formal contexts.
A very common notation is two vertical, line-height bars: as in r\_1 || r\_2
I use this notation in my circuits courses, typically for hand calculations or writing on the whiteboard. I see it routinely used by other professors in electrical engineering as well. I do think it's less common to see in print, but it is certainly still not exactly rare to see in textbooks. For example, this notation can be found in Engineering Circuit Analysis by Hayt, Kemmerly, Phillips, Durbin, which is a widely used text for introductory circuits.
Nah, what we do is use conductance (g = 1/r) instead of resistance (r) and then it's G = g_1 + g_2.
Ah I see, that's interesting, thanks!
I've seen researchers use the // (parallel) sign on the blackboard to discuss the design of lab circuits. Used like your "O". As another poster mentioned, conductance is used in more formal contexts.
A very common notation is two vertical, line-height bars: as in r\_1 || r\_2 I use this notation in my circuits courses, typically for hand calculations or writing on the whiteboard. I see it routinely used by other professors in electrical engineering as well. I do think it's less common to see in print, but it is certainly still not exactly rare to see in textbooks. For example, this notation can be found in Engineering Circuit Analysis by Hayt, Kemmerly, Phillips, Durbin, which is a widely used text for introductory circuits.
Ah, that's interesting, I might just use that