Uploaded August 2025 | Updated September 2026, 1 week ago
If your compass flips north to south, it can be fixed. In this video we’ll look at one way to repair a compass with reverse polarity — though whether it lasts forever is another matter.
More importantly, we’ll explore why this happens. What’s really going on inside the needle when it suddenly decides north is south? We’ll dig into the hidden physics — electron spins, magnetic domains, and how they all line up to make your compass behave.
By the end, you’ll see why a reversed compass still points north–south (just the wrong way round), and why it will never, ever point east–west. You’ll also see how a simple repair can sometimes bring it back to life — and when it might be easier to just get a new one.
If you’ve ever wondered what’s happening inside that little sliver of steel that always points the way, this video is for you.
If your compass flips north to south, it can be fixed. In this video we’ll look at one way to repair a compass with reverse polarity — though whether it lasts forever is another matter.
More importantly, we’ll explore why this happens. What’s really going on inside the needle when it suddenly decides north is south? We’ll dig into the hidden physics — electron spins, magnetic domains, and how they all line up to make your compass behave.
By the end, you’ll see why a reversed compass still points north–south (just the wrong way round), and why it will never, ever point east–west. You’ll also see how a simple repair can sometimes bring it back to life — and when it might be easier to just get a new one.
If you’ve ever wondered what’s happening inside that little sliver of steel that always points the way, this video is for you.
