Turtles, whales, migratory birds and many other stray animals travel thousands of kilometers every year, often passing through the sea of Wang Yang, but they can still determine the exact location.
Scientists have found that turtles can tell their directions by the earth's magnetic field and the positions of the sun and other stars. Pigeons have a very good sense of direction. Even if the homing pigeon in Shanghai is taken to Xinjiang for release, it will still fly back to Shanghai. Even if you encounter a storm on the way, you won't lose your way.
Scientists have done an interesting experiment on homing pigeons: they tied magnetic rods and copper rods to some pigeons respectively, and then transported them to far away places and chose to fly on cloudy days. The result is very interesting: the pigeons tied by copper bars flew in the right direction and all returned to their owners' homes safely. And those pigeons with magnetic rods are flying all over the sky and losing their way. This experiment shows that pigeons can be guided by geomagnetic field. Pigeons tied with magnetic rods will naturally lose their way if their ability to identify the geomagnetic field is disturbed by magnetic rods.
Scientists have studied the migration phenomenon of migratory birds and found that there is a "radar" in migratory birds, which can be oriented correctly according to the interaction between their electromagnetic fields and geomagnetic fields. To prove this, in autumn, scientists put migratory birds in cages and cover them with cloth to prevent them from seeing the outside world. These blackbirds stubbornly gathered in the south of the cage, ready to fly to the south. Later,
Put the cage in a magnetic field device, these birds lose their direction and are everywhere in the cage. You can see how important the geomagnetic field is to them.
Not only birds but also some insects and even bacteria can feel the geomagnetic field. There is a kind of bacteria that always faces north and south and never "lies" in the east and west. This fully shows that it also has the ability to sense the geomagnetic field. Some fish, put it in a strange still pool, it also swims in the north-south direction. There is a termite that can be built in the north-south direction.
Nest, therefore, this termite is called "compass termite".
The geomagnetic field will also affect human health.
It has been found in medicine that some human diseases are also related to the magnetic latitude of the earth. For example, scarlet fever mostly occurs in the range of 30-60 degrees north latitude and 0/0-40 degrees south latitude, and the incidence rate is related to geomagnetic changes. In some places with abnormal geomagnetic field, the number of people suffering from hypertension, rheumatoid arthritis and mental illness is higher than that in areas with normal geomagnetic field.
120%- 160%. This fully shows that the geomagnetic field is related to some diseases.
So, how does the geomagnetic field affect human health? There are many explanations. One thinks that there is water in all parts of the human body, and water will undergo physical and chemical changes in the geomagnetic field. In this way, after the local magnetic field changes, it naturally affects the water, which also changes the human body function and causes some diseases.
Some scholars believe that human organs also have magnetic fields, even if the geomagnetic field changes slightly, it will also cause changes in the surrounding magnetic fields such as the brain and blood. , will affect the body's function, cause dysfunction and cause diseases. Some people think that people are in different ecological environments, so every organ of people bears the imprint of local geomagnetic ecology. Local magnetic field variation
After that, people will have physiological abnormalities, react and cause diseases.
Of course, some people have put forward different explanations such as biofilm theory, but these explanations are not satisfactory. How the geomagnetic field affects the human body, especially the brain activity and physiological activity, has not been scientifically explained so far.
The reversal of geomagnetic field threatens human beings.
Scientists have found that the earth's magnetic field has been turned over many times through the study of submarine lava. Studies have shown that the earth's magnetic field flips every 500,000 years on average, and the last flip occurred 780,000 years ago. Since 100 magnetic field has been weakening for many years, people can't help worrying about whether another "big face change" of the earth's magnetic field is coming soon.
Bipolar inversion of geomagnetic field is an extremely long process, which takes about 5000 to 7000 years to complete. Originally, this is not a terrible thing, but in this process, the earth's magnetic field that protects human beings from strong ultraviolet radiation will disappear completely, which will have extremely serious consequences.
For human beings and all living things, geomagnetic transformation is disastrous. After the disappearance of geomagnetism, all kinds of rays in the universe will go straight to the surface, and creatures living on the earth will lose their "protective umbrella" and be harmed by strong radiation. Some scientists believe that the change of geomagnetic field will lead to chromosome aberration and make plants and animals grow differently. Therefore, the transformation of the earth's magnetic poles is the biggest threat facing mankind.