Secret: human body can suspend in the air
If the creature is in a strong neodymium magnetic field, will it be suspended like a drop of water?
There is a particularly interesting feature about magnetism that when an object is moving in the magnetic field, it creates a force opposite to the direction of movement, which resists the movement of the object. All substances are to certain extent diamagnetic, which means that they are resistant to be magnetized. But for some substance such as permanent magnet , the paramagnetism or ferromagnetam is so strong that the diamagnetism is overwhelmed, thus magnetism is shown. In addition, due to the different degree of diamagnetism, the force repulsion varies greatly.
So, where is the interesting part about such characteristic of magnetism? Have a look at the following eye-opening gif.
This interesting phenomenon is also referred to as "feather fall". A neodymium magnet and a copper tube are used here. The neodymium rare earth magnet creates a magnetic field, while the copper is excellently diamagnetic. The motion of magnetic field interacts with the copper tube, and induction current is generated in the copper which then creates upward repulsive force that keeps the magnet from falling down, thus give us the image of the object falling down slowly in the air!
When the magnetic field is very strong, reaching 20 Tesla, about the strength of several hundreds of ordinary magnets, even the water drops can be suspended in the magnetic field. A drop of water lost gravity and suspended in a magnetic field. Suspended in mid-air, it is there, not sad not happy, never abandon.
Why is water suspended in a magnetic field? In fact, water molecules are diamagnetic too. But the molecules are so tiny that the repulsive force it generates is negligible compared to the gravity. But if the magnetic field were strong enough, it could enable the water drop to overcome the gravity and suspend.
The vast majority of living organisms are water, and the protein, and so on, are also diamagnetic. Here comes the question: if the creature is in a strong permanent magnetic field, will it be suspended like a drop of water?
So, the scientists have also thrown living creatures into the powerful magnetic field. Among them, the funniest one is a frog. When the frog was placed in a magnetic field, every atom of frog likes a small needle. Upward force is created in these small magnetic needles by the external magnetic field. If the strength of the magnetic field is proper, and gravity of the frog is balanced, they can suspend in the air.
This frog is probably the first living creature that has been suspended from the earth without the external force such as the flow of air.
Well, when it comes to this, it's natural to think if the human body can also be suspended in a magnetic field? In theory, there is no problem at all. According to the principle of diamagnetism, with sufficiently strong magnetic field with neodymium permanent magnets and careful design, human body can suspend in a magnetic field.
There is a particularly interesting feature about magnetism that when an object is moving in the magnetic field, it creates a force opposite to the direction of movement, which resists the movement of the object. All substances are to certain extent diamagnetic, which means that they are resistant to be magnetized. But for some substance such as permanent magnet , the paramagnetism or ferromagnetam is so strong that the diamagnetism is overwhelmed, thus magnetism is shown. In addition, due to the different degree of diamagnetism, the force repulsion varies greatly.
So, where is the interesting part about such characteristic of magnetism? Have a look at the following eye-opening gif.
This interesting phenomenon is also referred to as "feather fall". A neodymium magnet and a copper tube are used here. The neodymium rare earth magnet creates a magnetic field, while the copper is excellently diamagnetic. The motion of magnetic field interacts with the copper tube, and induction current is generated in the copper which then creates upward repulsive force that keeps the magnet from falling down, thus give us the image of the object falling down slowly in the air!
When the magnetic field is very strong, reaching 20 Tesla, about the strength of several hundreds of ordinary magnets, even the water drops can be suspended in the magnetic field. A drop of water lost gravity and suspended in a magnetic field. Suspended in mid-air, it is there, not sad not happy, never abandon.
Why is water suspended in a magnetic field? In fact, water molecules are diamagnetic too. But the molecules are so tiny that the repulsive force it generates is negligible compared to the gravity. But if the magnetic field were strong enough, it could enable the water drop to overcome the gravity and suspend.
The vast majority of living organisms are water, and the protein, and so on, are also diamagnetic. Here comes the question: if the creature is in a strong permanent magnetic field, will it be suspended like a drop of water?
So, the scientists have also thrown living creatures into the powerful magnetic field. Among them, the funniest one is a frog. When the frog was placed in a magnetic field, every atom of frog likes a small needle. Upward force is created in these small magnetic needles by the external magnetic field. If the strength of the magnetic field is proper, and gravity of the frog is balanced, they can suspend in the air.
This frog is probably the first living creature that has been suspended from the earth without the external force such as the flow of air.
Well, when it comes to this, it's natural to think if the human body can also be suspended in a magnetic field? In theory, there is no problem at all. According to the principle of diamagnetism, with sufficiently strong magnetic field with neodymium permanent magnets and careful design, human body can suspend in a magnetic field.
