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• Users: misskitty
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1. ### When a bar magnet (one with Npole n the other with S pole) is broken

There has neer been a case where a magnet has been cut in half and one half been n-pole and the other be s-pole. I believe this property is one of the reasons why scientists have never been able to isolate a monopole. ~Kitty

So you would use the resistor series to account for the difference?

Wouldn't the metal have a different resistance than the brick though?

:eek:Oh NO; Don't do that! Bad things will happen if you do that! : Make sure to take the brick out of the furnace before testing the resistance with the Ohm-meter. What a mess that would be trying explaining what happened to the meter if someone put it inside the furnace with the brick and...

Just found out the sensitivity of the meter is not going to pose an issue. A normal Ohm-meter used by electricians is sensitive enough to measure the resistance produced by heating the brick. Fluke makes these meters. So they are pretty easy to obtain. I agree with Goku, using a furnice or oven...

I just thought of something that might get the brick up to 800 degrees. If we can't heat the brick that high with a blow torch, perhaps and autoclave might work. Placing the brick into an autoclave would raise it to the required temperature, or perhaps a few degrees higher, after the brick is...

OH! I'm sorry! I misunderstood what you typed Jdavel. :redface: Its hard to interpret how some things are intendend on the internet. Friends? :smile: I think your idea of the ammeter would work, but I don't know where you'd gain access to one that would be that sensitive. The local...

Thanks Inha. Is there such a thing as maximum resistance?

That's good thinking Inha. :smile: I know very little about resistance (haven't studied this yet...:blushing:). How much electrical resistance does something develop when it is heated? How does it happen?

This is true. It was more of just throwing out an idea of what could help. :redface: It wasn't my intention to sound like an imbecile. Where would you even get an ammeter that sensitive? My dad is an electrician who does a lot of work with high voltage machinery. He doesn't even have on that...

Perhaps something involving a blow torch and a control...I'll see where my thinking takes me. :smile:
12. ### Harmonics are integer multiples of a fundamental frequency

I think Shyboy might be onto something with the oscillioscope.
13. ### Harmonics are integer multiples of a fundamental frequency

Ok: you might perceive the notes to be the same since you can not hear the fundamental frequency. But if you know the sound you are hearing that is 30 Hz and you know the fundamental for that frequency is 15 Hz then it becomes a moot point because you know that its the second harmonic for the...
14. ### Harmonics are integer multiples of a fundamental frequency

:WHOA! : I've never heard that! How did you make that happen?! I wonder how there could be no fundamental frequency...that's going to keep me up tonight :wink:. What does IOW stand for? I'm not really great at the abbreviations because I rarely use them. :blushing: Sorry about the force...
15. ### Harmonics are integer multiples of a fundamental frequency

That's really good because not understanding makes answering your questions a bit more complicate; meaning I'd have to fry more braincells thinking of how to answer :wink: The fundamental frequency of an object is the minimum force that can be applied to set that object into vibration...