Getting energy from asymmetry of the magnetic field experiment

[ayeaye]

I would say that this experiment showed the gain of energy clearly. But of course it is only confirmed when replicated.

The precision of the spring scales was 0.1 N, so this can be considered the error of the results. This may make a lot of difference though, like when the friction was 0.3 N instead of 0.2 N, then it is much more likely that all the gained energy went to friction. But even with that error, the results showed clearly a gain of energy.

I attached the plastic box to the table with four pieces of mounting tape, so it did stay in place when moving the magnet. That way it is easy to remove the box from the table, without leaving any traces at all, and the box can be attached to the table again, with the same pads. The other way is to put something heavy inside the box, or at both sides of the box, that may do, but may not be the most elegant solution.

One doesn't necessarily have to have spring scales, the experiment can also be done using a rubber band, this may be proper for these forces. The rubber band has to be calibrated, that is measured what is its length with zero force, and what is its length with some known weight, like by weighing something brought from the store, with the known weight. Then the length of the rubber band can also be measured from the video, the same as distances. Rubber band and any spring is surprisingly accurate, as hooke's law applies to all of them.

The big magnet also may be something else, like it may work with the neodymium magnet from an old hard drive, attaching that to an angled position would be even easier. May be enough to attach it to some box under an angle, like maybe a cassette box or even some cigarette box, that then is attached into the big box, should not be difficult to do. Instead of the small magnet, one could maybe try some magnetized iron object, maybe the forces would be great enough to measure. I don't know, i have not tried all that, so i cannot possibly say for certain what would work. But i showed in principle how to do that.

Advice for these who may want to replicate this or similar experiments better. Put the camera in the fixed position, so that the movement of the magnet will be completely horizontal on the video. It helps to put a millimeter scale on the box, but it even helps to put some marks there, like marking the neutral position. It would be much better when a paper disc can be attached to the hook rod of the scales, then on the scale it will be the same at any angle. This may require altering the scales though, the way that is difficult. Or to use a higher precision so that both the magnet and the entire scales can be in the same view, with high enough precision to read the scale. Such precision is possible, but my camera is not capable of that. Hope that it may help.

[ayeaye]

Measuring distances with gimp is not that complicated. What i did, i watched the video, stopped it, then took screenshot of it with gimp. Then made the zoom of the image 100%. Gimp shows the location of the pointer at the lower left corner, x and y in pixels. I put the pointer to the last point of the distance measured, and then to the first point, then subtracted the latter from the former. No need to save anything, just exit from the image and it's ready to take next screenshot.

The same functionality should be available in other graphics editors. I don't know about paint.net in windows, but pinta has it when adding rulers with the view menu, it shows the x and y coordinates of the pointer on the rulers. Pinta supposed to be similar to paint.net, but it's open source and can be used in linux, it also works in windows, and it can take screenshots too. Just use pinta or paint.net, these are simple graphics editors, or some other graphics editor, many of them have such functionality.

I just used the fact that the diameter of my small magnet was exactly 10 mm, it was two ceramic disc magnets one on the other, both 10 mm in diameter and 5 mm thick. The big magnet below the lid was 8 ceramic disc magnets one one the other, 25 mm in diameter and 5 mm thick, tilted 45 degrees, to say that again. But it may be good to stick some markings on the lid of the box, with a known size, or such, to make the distance measuring easier.

[sm0ky2]

It is still not entirely clear "what" you are trying to measure.


Is it the difference in strength between the N or S pole?
and how are you equating this to energy?


For how long of a distance is this force applied?
And how much time does it take to do this?

[ayeaye]

It is still not entirely clear "what" you are trying to measure.

The energy, at the both sides of the neutral point. And i measured that is is greater at one side (left side) than the other side. Thus asymmetry.

Neutral point is the only point where the magnet stays in one place. When moving from left to right, before the neutral point there is a force in the direction of movement, and after the neutral point there is a force against the direction of movement.

> Is it the difference in strength between the N or S pole?

No, it has nothing to do with it. The other pole of the big magnet is far away and doesn't influence significantly at all. Because the big magnet is at the 45 degrees angle.

> and how are you equating this to energy?

Energy at the both sides is the distances moved away from the neutral point, multiplied by the force during that movement, sum of these.

> For how long of a distance is this force applied?

Distances at both sides were measured up to the length when there was no more a measurable force.

> And how much time does it take to do this?

Time is not relevant to these calculations. Or what do you mean, how much time it took to do the experiment? A few hours preparing everything, plus what you see in the video.

[ayeaye]

Distances moved, and for each distance the force to the magnet. A distance multiplied by that force is energy. Calculate energy for all distances moved, and sum all these energies, this is energy at one side.

Ok, that drawing again, it didn't look so nice previous time. The small magnet there is at the neutral position. Left and right from the neutral position on that drawing, is what i mean by left and right. I found by measurements that energy is greater at the left side. 13.14 mJ at the left side and 5.15 mJ at the right side (without friction).