Newbie that don't understand

[Jim]

Peter Hansen wrote:
> Jim wrote:

>>Peter Hansen wrote:

>>>Just a dude wrote:

>>>>My son is an electronics
>>>>design engineer, and I still can't get my head around negative
>>>>voltages, how the hell do you get a -12 V supply... to him it's basic
>>>>but to me..............

> [snip my own reply which rather missed the mark this time,
> because it's too embarrassing to leave in :-)]

>>While this is way off topic and way pedantic, electrons
>>always leave and enter the same terminals (think electro-
>>chemistry, like a battery). 

> D'oh!  What was I thinking?  And they call me an engineer. :(

> Jim is quite right of course.  Grumble grumble.

Embarassingly I had to think about it for a little
bit (won't say how long). Having just finished 9th
grade General Science recently (my daughter's)
really helped.

Now I suppose I'll have bad dreams again about them
coming to take away my EE degree.


Jim