# Why is Complex number notation the way it is?

Steven Feil sfeil at io.com
Sun Dec 23 02:34:39 CET 2001

```I was schooled as a Physicists dammit!!
The imaginary number is i!!!

Electric current ALWAYS flows from Positive TO Negative.
charge carrier may flow from negative to positive, such as e- and
Cl- but Na+ flows from positive to negative. If you don't believe
that Na+ and Cl- can flow, try taking a bath in salt water and throw
in a toaster.

IE=P is ALWAYS true, even with AC and a phase factor
Because instantaneous current times instantaneous voltage is equal
to instantaneous power! (in physics everything is instantaneous)

In article <3C21173A.8E02D0A0 at cosc.canterbury.ac.nz>, "Greg Ewing"
<greg at cosc.canterbury.ac.nz> wrote:

> Josh Yotty wrote:
>>
>> I've been coding Python for about a day now, and I can't 'see' why a
>> complex number like 2+3i is represented as 2+3j in Python.
>
> Guido was apparently thinking like an engineer at the time. Electronic
> engineers use j instead of i to avoid confusion with current.
>

--
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Steven Feil               | Gram-pa, back at the turn of the      .~.
Programmer/Developer      | century, why did people use an        /V\
sfeil at io.com              | operating system, when they were not // \\
| allowed to see the source code?      (X_X)
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