how the heck do these magnets maintain their orientation on this pop filter?

212 viewsOtherPhysics

I’ve been wracking my brain trying to figure out how this magnetic pop filter knows which way “up” is and doesn’t just spin around the bar. Especially given the diagonal orientation of the microphone.

https://youtu.be/JEwUH6LK6UI?si=ucURZpBwV4ChZaTT

In: Physics

3 Answers

Anonymous 0 Comments

While it would take more testing to speak with certainty, it is likely the geometry of the bar. The magnets are stuck to a curved bar, but they are not themselves curved. This means that they settle best on the bar where it is also flat – on the ‘top’ or ‘bottom’ of the bar where it does not curve towards or away from the magnets.

When the filter is tilted, the magnets are forced to move to a side of the bar that curves towards or away from them, ‘lifting’ them farther from the bar. The magnetic force pulling them back towards the bar causes them to settle back on the ‘flat’ side.

What happens if you flip the filter entirely backwards?

Anonymous 0 Comments

the simple answer is “its attracted to the bottom of the rail”

How exactly that physically works requires knowing a lot more about the design than we have, but if I were designing one, I would put a steel band in the bottom of an aluminum (or stainless steel) band. magnets are attracted to the steel band, but not aluminum or stainless. So the magnet feels a pull towards the steel band, and will want to minimize its distance to it. but since there is a curved bit of metal in the way, it has to rotate around it, thus orienting correctly.

Anonymous 0 Comments

Center of gravity is on the bracket side of the bar so it wants to rotate that direction and is stopped when it hits the v supports. Centers of gravity can be deceptive. I bet if the mic were tilted farther away from the filter and you pushed it over further it wouldn’t come back.