Lead
The earth's magnetic field is a layer of "shield" that protects us from solar activity, and the generation of the earth's magnetic field is caused by the rotation of the outer core, recently an American geophysicist found that the temperature of the earth's core is much lower than people expected, and the low temperature of the earth's core means less heat, so when did the heat of the earth's core disappear?
Core graphene experiments.
An experiment by Benjamin Franklin, the founder of the National Association for the Advancement of Science, was once the "first scientist" of the United States, Benjamin Franklin is a famous American scientist and politician, he is a person who loves his motherland, one of the pioneers of modern science in the United States, and there is an experiment that is said to have discovered the positive and negative polarity of electricity.
In 1772, Benjamin Franklin discovered an interesting phenomenon when he discovered an interesting phenomenon in a windmill used to generate electricity during a snowstorm, saying that a captain owned a ship that still had static electricity and that the captain found that half of the ship's electricity had disappeared when it approached the harbor after the storm.
Then, when Benjamin Franklin heard the news, he wanted to conduct an experiment to see if the clouds in the storm would generate static electricity at the moment of contact with the hull, so Benjamin Franklin conducted the experiment on his small wooden boat.
His experiment was as follows: he put a wire on a small boat and connected it to the ground, and then he rubbed the paraffin rod with an ancient insulator, a paraffin rod, and the paraffin rod generated static electricity, so Benjamin Franklin rubbed the paraffin rod against the wire on the ship, and then he used a wire to connect the sea water and clouds at the bottom of the boat, and then Benjamin Franklin rubbed the paraffin rod on the wire for a while.
Finally, when he made contact with a wire on the wire, the end of the thread that was touched suddenly flashed, and suddenly there was a burst of light, so Benjamin Franklin famously said, "How can lightning play like this?"
After that, he began to study lightning carefully, he tried to contact lightning with a needle, but failed, until June 15, 1776, Benjamin Franklin announced to the world that he had discovered the positive and negative polarities of electricity and lightning, and he himself came to the stage and showed the world the process of his experiment, which was carried out with the famous kite experiment.
He added a pointed needle to the kite, and then he turned the needle up and down with a metal pot, so he felt static electricity in the pot, so that his experiments could prove that his pot did accumulate static electricity.
So Benjamin Franklin used a metal ring to connect the pot and the needle, and then drove the kite to fly around the clouds in the sky, the experiment was successful, the pot produced obvious static electricity, so Benjamin Franklin began to study this phenomenon, he used the results of the experiment and the lightning in the clouds to verify, and came to the conclusion: the positive and negative polarity of electricity and lightning is the same, he used a cannon barrel kite, added a wire to the kite, and then he connected the wire to the cannon barrel, so when the kite was struck by lightning, The explosion of gunpowder produced in the barrel proves that the positive and negative polarities of electricity and lightning are the same.
So, Benjamin Franklin used an instrument called Monsley, which is basically a giant paraffin rod, and then he used this instrument to conduct lightning experiments at a distance of 100 meters from the surface, so he found that the electricity on this instrument was very small, so he began to shape it, and he polished this huge paraffin rod, and when he polished it, the negative charge on the paraffin rod decreased, which created a question, what would cause the electricity on the paraffin rod to decrease?
So he started his experiment, he took the electricity from this paraffin rod through a wire and put it into the ground.
Earth's magnetic field.
The magnetic field on the earth is the magnetic field where the outer atmosphere of the earth is located, the magnetic field of the earth is the magnetic field where the outer atmosphere of the earth is located, a kind of protection for the energy of the earth's surface, it is generated by the rotation of the earth's inner core, the inner core of the earth is composed of a liquid molten iron alloy, this liquid molten iron alloy has a very strong conductivity, so he formed a very strong magnetic field when the earth rotated, and this magnetic field formed the earth's magnetic field.
The earth's magnetic field has an electromagnetic protection function, which can induce electron ions and other charges in the solar wind to the earth, so that the atmosphere and ionosphere on the earth's surface produce loops, and then part of the high-energy electrons in the solar wind will be captured by the magnetic field, and then emit light on the magnetic field to form a light similar to sunrise, which is the aurora.
But although the earth's aurora looks like a very beautiful thing, it is also a very dangerous phenomenon, it will capture cosmic rays and other high-energy particles, and then put them back on the earth's ionosphere and atmosphere, producing a kind of rays called short waves, which have a very dangerous impact on the human body, so in the process of Arctic exploration, the scientific expedition team will carry out large-scale extermination to avoid the harm of this ray.
The Earth's core is cooling.
Someone once made a simple calculation, if the core of the earth no longer produces heat at this time, then the temperature of the core of the earth will drop to 0 degrees Celsius in about 450 million years, but the core has been flowing heat to the crust and the air on the surface for hundreds of millions of years, so where will the temperature of the core drop?
When the temperature of the Earth's core drops to a certain level, the liquid iron in the Earth's core becomes solid, and the Earth's magnetic field disappears.
However, researchers have proved through the results of friction experiments that the heat of the earth's core will not be completely dissipated and the temperature of the earth's core will be reduced, because the molten iron alloy in the earth's core will produce friction with its own movement, and friction will produce heat, which will be added to the earth's core to maintain the temperature of the earth's core.
Researchers simulated the molten iron alloy in the earth's core graphene experiment, and then carried out friction experiments, and the heat in the experiment is the heat generated by the friction of the molten iron alloy, which proves the way the earth's core maintains temperature.
But even with molten iron alloys, the speed of heat replenishment is very slow, so the core is cooling, but this process may be faster than we expected, researchers in the core of the graphene simulation, found that the temperature of the core is much lower than we expected, the temperature of the core of the earth is also faster than we expected.
If the temperature of the Earth's core really drops too quickly, it will cause the temperature of the Earth's core to suddenly drop below zero, with unpredictable consequences, which is a threat to all life on Earth.
Is the Earth's core really cooling? So can we drill the core directly with a drill bit to see how high the temperature of the core is?
An unsearchable abyss.
In 1914, a man named Erskine put forward a very bold idea, he wanted to dig a well to reach the core of the earth, but this idea was opposed by everyone, and the reason of others was that there was high temperature and pressure in the core, and people on the wellhead would be scalded to death by steam.
But Erskine was still very attached to his ideals, he asked the Carnegie Institution for funding in 1913, he hoped that the Carnegie Institution could grant him $40,000 to dig a well, he wanted to prove his conjecture, prove the energy in the earth's core, but the Carnegie Society thought that Erskine's theory was not correct, so the Carnegie Society rejected his application, and Erskine was very discouraged.
However, in 1933, Erskine proposed his idea to the government, he wanted to ask for the government's support for digging wells and studying the core, he wanted to prove that his theory was correct, but the government also rejected him, for this unverifiable theory, the government did not think it was necessary to invest, but the government still gave Erskine some donated funds, for this money, Erskine was also used to dig wells.
But in 1936, when Erskine and his son and several assistants were digging a well, they accidentally discovered an underground volcanic eruption, so Erskine, his sons and several assistants were killed in the erupted magma, and Erskine's dream finally came to naught with his departure, and there is also a theory that Erskine was poisoned by the volcanic gases of the smoky volcano while excavating and exploring.
But the earth's core has always been an unexplored place, even now that science and technology have developed so fast, but we can't explore the temperature and structure of the earth's core, we can only study the earth's core through some simulation experiments.
epilogue
Where does the heat in the Earth's core disappear from?
And how fast is the Earth's core cooling?
Is the Earth's core really dangerous enough?
Maybe it's a mystery too.