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What Happens When You Drop A Magnet Inside A Copper Tube [video]

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Re: What Happens When You Drop A Magnet Inside A Copper Tube [video]

#71

Post by a3n »

salgernon wrote: post #11
IgorPartola wrote: post #5

Earlier quoted context omitted.

Fingers will also be pinched and possibly broken.

The latch on our clothes dryer broke; the door would no longer snug up and maintain the seal or necessary pressure for the safety switch. I now have a 2x2x1" rare earth magnet holding the door shut against the dryer frame. Its strong enough to keep the door snug, but I can still open the dryer door with a good tug. I'm not sure why I had a 2x2x1" neodymium magnet laying around, but I'm glad I did.

> I'm not sure why I had a 2x2x1" neodymium magnet laying around, but I'm glad I did.

The same reason why there's beer in the fridge, condoms in the night stand and a guitar pick in your pocket: just in case.

Re: What Happens When You Drop A Magnet Inside A Copper Tube [video]

#72

Post by mark-r »

deletes wrote: post #10

Where can you buy something like that. A magnet is around 150$, but I have no idea where to get a copper tube of that thickness.

Would a thinner wall tube work just as well? It seems the effect depends on electrical conduction which should be sufficient even with much less copper. Or does it depend on how many flux lines are hitting the copper cross section?

Re: What Happens When You Drop A Magnet Inside A Copper Tube [video]

#73

Post by rpenm »

laureny wrote: post #67
tall wrote: post #64

Earlier quoted context omitted.

actually not true, modern phones use SSD, and don't really get affected by magnets in the way you might expect.

True, they would only get fried if they used electronic components.

If the elevator carries the magnets, the magnetic field relative to the phone is constant, thus no induced current and no fried components.

Re: What Happens When You Drop A Magnet Inside A Copper Tube [video]

#75

Post by salgernon »

a3n wrote: post #71
salgernon wrote: post #11

Earlier quoted context omitted.

The latch on our clothes dryer broke; the door would no longer snug up and maintain the seal or necessary pressure for the safety switch. I now have a 2x2x1" rare earth magnet holding the door shut against the dryer frame. Its strong enough to keep the door snug, but I can still open the dryer door with a good tug. I'm not sure why I had a 2x2x1" neodymium magnet laying around, but I'm glad I did.

> I'm not sure why I had a 2x2x1" neodymium magnet laying around, but I'm glad I did. The same reason why there's beer in the fridge, condoms in the night stand and a guitar pick in your pocket: just in case.

You live a far more exciting life than me. Although mine might be more surreal.

Re: What Happens When You Drop A Magnet Inside A Copper Tube [video]

#76

Post by itchitawa »

salgernon wrote: post #11
IgorPartola wrote: post #5

Earlier quoted context omitted.

Fingers will also be pinched and possibly broken.

The latch on our clothes dryer broke; the door would no longer snug up and maintain the seal or necessary pressure for the safety switch. I now have a 2x2x1" rare earth magnet holding the door shut against the dryer frame. Its strong enough to keep the door snug, but I can still open the dryer door with a good tug. I'm not sure why I had a 2x2x1" neodymium magnet laying around, but I'm glad I did.

Ha. I did exactly the same thing with a dryer years ago but with a neodymium magnet from a hard drive head actuator.

Re: What Happens When You Drop A Magnet Inside A Copper Tube [video]

#77

Post by ingebretsen »

deletes wrote: post #10

Where can you buy something like that. A magnet is around 150$, but I have no idea where to get a copper tube of that thickness.

I found a kit (magnet + copper tube) here: http://www.teachersource.com/product/645/electricity-magneti...

Not on the same scale, but appears to be designed to demonstrate the same concept.

Re: What Happens When You Drop A Magnet Inside A Copper Tube [video]

#78

Post by cincinnatus »

baq wrote: post #4

be very careful when handling such powerful magnets - if you have something metalic on you, they might jump off the table and smack you really hard. bones will be broken.

And if you have little kids treat them like guns. Lock them up when you aren't around.

Re: What Happens When You Drop A Magnet Inside A Copper Tube [video]

#79

Post by nrivadeneira »

robotresearcher wrote: post #70
hnriot wrote: post #62

Earlier quoted context omitted.

semantics vs syntax - magnets don't have hands obviously, but the metaphor holds just the same. There is no "technically..." nonsense! It's not a human convention either - it's an anthropomorphic metaphor.

Name another animal that uses that convention.

The point is that it's not a convention - it's a metaphor, as hnriot pointed out.
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