Rotating Magnetic Field's and Inductors.

[MileHigh]

Let's start off by being adults and remembering what we learned in high school if you took a science course:  The magnetic field of the Earth is essentially constant and unchanging.  There is no possible way for the Earth's magnetic field to make the magnets spin.  It is simply impossible.

For starters, have you looked at the thread under a magnifying glass or with a magnifier app on your cell phone?  Can you see a twist in the thread?

How can you double-check if the magnet is spinning because the thread is untwisting?

I can think of two ways.

1) Look at the separation between the bottom of the magnet and the wooden crossbeam of the chair.  Do you see the separation getting smaller as the magnet spins?

2) Take the thread and flip it upside down and redo the test.  If there is torque from the untwisting of the string then the magnet will spin the opposite way.

MileHigh

[tinman]

Let's start off by being adults and remembering what we learned in high school if you took a science course:  The magnetic field of the Earth is essentially constant and unchanging.  There is no possible way for the Earth's magnetic field to make the magnets spin.  It is simply impossible.

For starters, have you looked at the thread under a magnifying glass or with a magnifier app on your cell phone?  Can you see a twist in the thread?

How can you double-check if the magnet is spinning because the thread is untwisting?

I can think of two ways.

1) Look at the separation between the bottom of the magnet and the wooden crossbeam of the chair.  Do you see the separation getting smaller as the magnet spins?

2) Take the thread and flip it upside down and redo the test.  If there is torque from the untwisting of the string then the magnet will spin the opposite way.

MileHigh

Flip the string around, and the magnet will spin the other way
Lol-better have another think about that one MH
Maybe if we put a propeller on backwards, the plane will fly backwards too lol.

[gotoluc]

Okay, here is my test device to verify if the earths magnetic field has an effect on our magnets.

I may not of mentioned this in the video demo but when my magnets are at rest they always line up across the 12 to 6 o'clock vertical position which happen to line up exactly with the floor tiles.

Link to video demo: https://www.youtube.com/watch?v=fs862lNtfTc

I have nothing unusual to report which could be because my test device is different. However, if there is interactivity between the earths magnetic field and magnets, I'm quite confident my test device should be sensitive enough to detect it.
My test device also eliminates the possible participation of the twisted sewing thread. So we don't have to deal with string theories

Luc

[MileHigh]

Flip the string around, and the magnet will spin the other way
Lol-better have another think about that one MH
Maybe if we put a propeller on backwards, the plane will fly backwards too lol.

Yeah, you are right about that one.  I guess that I have some compass on my face!  Next time I put my two index fingers together and twist I will have to be more careful!

[tinman]

Hi Brad

I am sure that you are already on it because this experiment is so simple and you are probably in possession of a ring magnet and some of your wife sewing thin cotton thread.

And no i have not invented the first all magnet motor, i simply replicated Mag and Grum experiment, and by doing this i stumble upon this issue, And it is why i share it with all of you.

So i expect from you that you will try it in the south hemisphere and report the direction of spinning.

Thank's

Laurent

Sure,i'll try it out Laurent.'
One thing to keep in mind is that cotton thread is a lot of single cotton strands twisted together.

Brad