My question is about magnetic fields and their relation to health. I intend to buy a product on AliExpress that uses a magnetic field generator to keep a decoration suspended in the air. However, I am concerned that the magnetic field required for this may be so strong that it could be harmful to the health of both adults and children. I would like to know if anyone can tell me the intensity of the magnetic field of this item and if it poses any danger to the health of adults and children. Here is the link: https://pt.aliexpress.com/item/1005004883829701.html?spm=a2g0o.ppclist.product.4.f15aRNQ1RNQ1Qa&pdp_npi=2%40dis%21BRL%21R%24%20879%2C64%21R%24%20457%2C39%21%21%21%21%21%402101f6b616804818376522699e3157%2112000030882977553%21btf&_t=pvid%3A60582d38-9ce6-4c52-8a4b-07090d3ee17a&afTraceInfo=1005004883829701__pc__pcBridgePPC__xxxxxx__1680481837&gatewayAdapt=glo2bra
Hello there,
I do not have any direct information on how a magnetic field affects health, but i do know some related facts and one in particular come to mind.
That is the fact that a CHANGING magnetic field causes electrons to move, flow if you will. That constitutes an electric current even though the electrons are not inside a wire. There could be a little more randomness to it, but the electrons will move.
Electrons moving can cause heating, and heating can 'cook' just about anything. So in theory, a changing magnetic field can cause small currents to flow inside your body which can cook cells, or at least heat them up. That's something i would not want inside my body.
The nice thing is that distance plays a very important role in this effect. The farther you are away from the magnetic field source, the less the effect, and the effect goes down fast with distance. For a quick example, if you are 2 inches from the source and are affected by the magnetic field, if you move 4 inches away (twice the distance) the effect drops to 1/4 of the original effect. If you move 8 inches away, the effect drops to just 1/16 of the original effect. So the effect drops off pretty fast, meaning much less current flow at increasing distances. This of course means that if you stay away from the source you would be ok for the most part.
As others have said though, keep the time of the exposure low also. That reduces the effect in proportion to the time, so if you are exposed for 8 seconds and are affected by a certain amount, but instead are exposed for 4 seconds (1/2 the original time) the effect is reduced to 1/2 of the original, and if you are exposed for just 2 seconds (1/4 of the original) then the effect is 1/4 of the original.
So the effect drops with the square of the distance, and in proportion to the time of the exposure. Increasing the distance and decreasing the time reduces the effect and therefore the possibly health concerns. Of course it does increase with the field strength of the source.
One thing i remember from way back. There was an experiment done on a frog with a very very very high strength, controlled magnetic field. The frog was levitated just like in the picture of the light bulb. This was a living frog though. It did not seem to be affected but i do not know if they did an autopsy later to determine if any nerve damage, organ damage, or cell damage had occurred. I do know the frog was still alive though because it could still move around. While in the field it did not go crazy though, like start moving the legs rapidly as if trying to get away, so i dont think it experienced any pain, but of course i cant be sure about that.
So the final work i believe is keep the exposure time short and dont get too close and you should be ok. Personally though i think it is a huge waste of money. You'll look at it once or twice, people that come to visit will look at it once or twice, maybe three times, then go about their business. They might say, "Oh, that was cool", then walk away, but that's probably all that will come of this.
You know what they say though, "It's your money, use it when you need it". (chuckle).
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