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Volume 2: Staggering Biomagnetic Fields

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    Biomagnetic field Magnetism phenomenon in the biological world (biomagnetic field) The influence of magnetic field on living things, that is, the biological interaction of magnetic field has not long attracted people's attention.  According to tests, if a person stays in a magnetic field of 2,000 Oersted for 15 minutes, it will not cause harm to the body. If a person suddenly approaches the accelerator magnetic field, he will immediately lose the ability to discern direction and wait for a while before he can adapt.  When people suddenly leave the accelerator, they will have the same reaction as when they first entered the magnetic field.  Strong magnetic fields have a more significant effect on some organisms.  If a fruit fly pupa is placed in a non-uniform magnetic field of 22,000 Oersted 12 mm and 9,000 Oersted 1 mm, the fruit fly will die in a few minutes.  After about 10 minutes of magnetic treatment, 50% of the fruit flies could not become adults, and the part that became adults did not survive for less than an hour, and 5 to 10% of the adults showed distortion of the wings and body shape.  What impact does the magnetic field have on the activities of life?  We might as well do an experiment first.  In a humid (temperature between 18-25C) glass darkroom, place a specific shelf with filter paper on it. Both ends of the filter paper are connected to containers with water, so that the filter paper can be evenly absorbed.  Moisture.  On top of the filter paper, there are two types of dry, ungerminated corn seeds. The radicles of one type of corn seeds face the Earth's North Magnetic Pole.  After some time, the corn seeds will slowly begin to germinate.  Interestingly, corn seeds whose radicles face the Earth's South Magnetic Pole germinate several days and nights earlier than corn seeds whose radicles face the Earth's North Magnetic Pole. It was also found that the roots and stems of the former grow thicker, while those of the latter  The sprouts from the seeds often have a shape that bends towards the south magnetic pole.  In order to explore the mystery, someone also carefully designed a test equipment.  When the seeds were placed in a permanent magnet with a strength of up to 4,000 Gauss, it was interesting to find that the young roots of the seeds seemed to avoid the influence of the magnetic field and gravitated towards the weaker side of the magnetic field.  What is the reason for this?  After several years of research, scientific workers discovered that plant organisms have certain magnetic fields and polarities, and the magnetic fields of organisms are not symmetrical.  Generally speaking, the negative pole is often stronger than the positive pole, so when plant seeds germinate in the dark, no matter which direction the germ of the seed faces, the roots of the new sprouts face south.  After research, scientists also found that weak magnetic fields can not only promote cell division, but also promote cell growth. Therefore, the roots of plants stimulated by a constant weak magnetic field will penetrate deeper than those that are not stimulated by a weak magnetic field.  A magnetic field, on the other hand, can prevent plants from taking deep roots.  But nothing is absolute. Relevant experiments show that when the seeds are in different positions in the magnetic field, if the magnetic field can strengthen its negative pole, the seeds will germinate faster and stronger; on the contrary, if the magnetic field can strengthen its negative pole, the seeds will germinate faster and stronger.  If it is positive, the development of the seeds will not only become slow, but they will also be prone to disease and death.  Scientists once conducted such an experiment in Kamchatka Peninsula. When planting larches, they were not planted parallel to each other as usual, but were planted radially, with the trees in each row facing south, east-west and southwest.  Arrangements were made, and interestingly it was found that the saplings that grew best were those saplings oriented east of the magnetic field of the sector.  According to this scientific research result, when planting larch, people used a sticky paper tape, on which seeds oriented in a predetermined direction were placed for sowing.  Magnetic fields also have a certain impact on the life activities of animals.  People have conducted experiments with animals such as fish, mice, termites, snails, fruit flies, and earthworms, and found that rodents grow slowly and are short-lived in a strong uniform magnetic field; in an uneven magnetic field, their mortality rate increases.  ; Under a stable magnetic field of up to 3000 to 4000 Gauss, it can make it disappear periodically; mice that have been exposed to the magnetic field of permanent magnets have strong resistance to radiation doses that can usually be fatal.  It has long been discovered that termites often rest in the direction of the magnetic field.  Someone once deliberately placed it horizontally in the east-west direction, and then placed it in a very strong artificial magnetic field, and found that it would still move its body position according to the new magnetic field direction.  The same goes for the movement of a snail.  When the external magnetic field intensity is around Gauss, its ability to discern direction is the most sensitive; when the intensity of the external magnetic field increases, the ability to discern direction will quickly disappear.  For ordinary worms, when the external magnetic field exceeds 10 Gauss, their ability to discern directions will also disappear.  Since the birth of the Earth, the Earth's magnetic field has not only changed direction, but has often reversed.  The crab is an animal that is very sensitive to magnetic fields. Faced with the changing magnetic field, it has to adopt a compromise approach to adapt to the ever-changing situation. It does not move forward or backward, but moves forward.  Walk sideways.  The earth's inversion has little effect on this veteran animal.  The main sources of biomagnetic fields are: (1) The magnetic field generated by natural biological currents.  The human body is always accompanied by biological currents in everything from cells to organs and systems.  Moving charges create a magnetic field.  In this sense, wherever there is bioelectrical activity, biomagnetic fields must be generated at the same time, such as heart magnetic field, brain magnetic field, myomagnetic field, etc., all fall into this category.  (2) Inductive fields generated by biological materials.  The materials that make up biological tissues have certain magnetic properties. They react in the geomagnetic field and other external magnetic fields.Under the action of ?, an induction field is generated.  The magnetic fields displayed by the liver, spleen, etc. fall into this category.  (3) Residual magnetic field generated by strong magnetic substances that invade the human body.  Workers who work under dust containing ferromagnetic substances often have their respiratory tract and lungs, esophagus and gastrointestinal system contaminated.  The dust that invades the body is magnetized under the action of the external magnetic field, thus generating a residual magnetic field.  Lung magnetic field and abdominal magnetic field both belong to this category.  Biological magnetic fields are generally very weak. The strongest lung magnetic field is only on the order of 1011 to 108 Tesla. The heart magnetic field is weaker, with an intensity of about 1010 Tesla. The spontaneous brain magnetic field is even weaker, about 1010 Tesla.  The order of magnitude is 1012 Tesla; the weakest ones are the induced brain magnetic field and retinal magnetic field, which are of the order of 1013 Tesla.  The magnetic interference and noise in the surrounding environment are much greater than these. For example, the strength of the geomagnetic field is about 4 Teslas; the AC magnetic noise in modern cities is as high as 108 to 10 Teslas.  The magnetic noise will be stronger if the distance is closer to machines such as machine tools, electromagnetic equipment, power grids or moving vehicles.  !  ~!
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