This "Electrical theory 1" class instruction is very much in the "only kinda sorta accurate" category.
The instructor doesn't seem to know much physics beyond the level of what's on the slides and is clearly bullshitting when asked questions about why stuff is the way it is. A student will ask "is that because of <other concept>" and he'll nod and say yes even when they're not actually very related.
Knowing the material better than the instructor is really uncomfortable :/
Re: the pictured sides: I was really tempted to ask "so why is copper more conductive than potassium?", but that would have been kinda mean and entirely unproductive.
Yeah though my HS physics class was a whole lot more accurate than this, and my HS physics teacher was okay but not great.
I should have placed a bet on whether the teacher would say "electrons flow from positive to negative".
Tbh I kinda suspected the class would be like this, based on the general caliber of "trades knowledge" I've seen from journeymen when theory discussion comes up.
And like yeah this is actually perfectly fine stuff to think is true when you're wiring stuff.
It's just... wrong.
This Union hall has photos of members marching at May Day events and protesting WTO 1999 which is kinda cool, though.
<instructor pulls out a sketchy-ass demo transformer made from two spools of wire and some ferrous conduit>
Classmate, with just the smallest hint of irony in his voice: "what's the UL listing on that?"
Okay, that got a pretty good laugh from me.
So we got through the class material early, so to pad out the time (it's supposed to be 8h of instruction) the instructor put on an episode of Modern Marvels from 2006 about magnets. It didn't amount to shit.
As is, I feel like my time was disrespected. If I had paid more than a trivial amount for the class, I'd be actively pissed.
The quiz at the end covered the most basic of atomic theory, not even the intro stuff about electric hazards, DC circuits and Ohm's Law etc that we'd covered in class. It was pitiful.
Okay, in followup slides he made clear that electrons flow from negative to positive. Cool.
@starkatt very awesome!
@starkatt even better, ask for details on Cooper pairs
@Felthry I confess, I had to look that up.
@starkatt I can find something blatantly wrong with every statement in that picture
@Felthry yeah okay it's worse than "every other".
@starkatt Several of these seem extremely dubious.
By which I mean, about every other statement isn't actually true.