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> Earth-centered model is free speech, but it isn't worth much, because it is wrong. And yet in schools around the world people are taught that electricity flo
by Ntrails 8y ago
> Earth-centered model is free speech, but it isn't worth much, because it is wrong.
And yet in schools around the world people are taught that electricity flows from positive to negative, and everyone is happy. xD
(slightly disingenuous, but I'd say wrong and not useful are merely correlated rather than 1-1 linked)
- gumby 8y ago> And yet in schools around the world people are taught that electricity flows from positive to negative, Seriously? I have never encountered this
- krageon 8y agoAnecdotally, I was taught this in lower grades and taught that it was actually the opposite in higher grades. It wouldn't surprise me if people receiving a more basic education even in the same country would never be taught how it actually is.
- colinhb 8y agoUnderstanding that current is a convention because it doesn’t matter if you have positive or negative charge carriers in many applications is not wrong in any way. Given the nature of electric charge (not to mention specific applications like semiconductors) even if you align the direction of conventional current and flow of electrons, it will still be a convention. That’s the cost of having an abstraction for net change in electric charge (which is a useful and insightful abstraction). Don’t believe schools are teaching anything different than this.