Asphalt, which is everywhere on the road, is actually liquid, it can also flow and evaporate, but its flow rate is so very, very slow, that from our human point of view, such as observing for hours, weeks, or even years, asphalt is almost solid.
In order to show the flow characteristics of asphalt, scientists put a piece of asphalt in a funnel and did a dripping experiment, but this time lasted for nearly 100 years before the drop of asphalt finally dripped.
So what do I mean by that? In fact, some people think that the earth has been rotating for 4.5 billion years, suspect that it is a perpetual motion machine, and we observe for weeks without seeing the asphalt flowing, and then judge that it is solid, these two things are actually the same, it is our perspective on the world that is wrong.
In other words, in our species, which has an average lifespan of only 70-80 years, it is difficult for us to feel the things that have not changed for decades, even tens of thousands of years, and even hundreds of millions of years, and even hundreds of millions of years.
You may have heard that the moon is always facing the earth on one side, which is caused by the earth's "tidal lock" on the moon, so what does this mean?
The rough explanation is that the moon itself is rotating, and its rotation will have an energy, called rotation kinetic energy, but because the earth and the moon constitute a binary star system, the rotational kinetic energy of the moon will slowly become friction due to the principle of force interaction, forming heat, and thus dissipating, this process can be very slow, but it is irreversible.
Therefore, once the binary star system is formed, they will inevitably consume each other, and in the Earth-Moon system, unfortunately, the small moon is seized by the Earth to rotate energy, so it is always facing the Earth.
But the tidal lock is mutual, so the earth is also being "locked" by the moon, and even the sun, so from the beginning of its birth, the rotational energy of the earth itself is constantly being consumed.
When I say this, you should be able to understand that sooner or later the energy of the earth's rotation will dissipate. So if we think about it, one obvious conclusion is that since the day of its birth, the earth has had rotation and rotation, that is, it has the energy of these two kinds of movement.
By simply calculating the constants measured by a few scientists, we can calculate that the energy of the Earth's rotation is 2.6×1029 J, and the energy of the rotation is 2.7×1033 J.
This energy is really too big and too big, so that we all human beings, at the current level of energy use, our current energy utilization power is 2×1013 W, and it will take 400 million years to consume the energy of the earth's rotation.
Where did this initial energy come from?
We have gold, silver, platinum and other precious metals on the earth, they are rare metals, heavy metals, and the original source of these heavy metals is the supernova explosion.
It is conceivable that Earth, Venus, and that behemoth, Jupiter, including the Sun, were all reborn on the wreckage of the previous generation of supernova explosions.
The entire supernova explosion lasted for months, and its brightness was equivalent to the light emitted by all stars in the entire Milky Way, and of course, after a few months, the supernova explosion ended, leaving a residue that pervaded the range of light-years.
Some of these debris are like dust, under the action of gravity, close to each other, forming nebulae, these dusts have a large distance between each other, that is, with potential energy, when close to each other, gathered into pieces, potential energy into kinetic energy, although because the trajectory of microscopic particles can not be predicted, this is called "chaotic phenomenon", but they can be roughly divided into two outcomes,
Some of the fast-moving debris slowly approached the center of the nebula and began to spin around;
The fragments, which barely moved, drifted slowly toward the center of the nebula, but not much.
Then, gradually, a nebula with no rules will become a disk-like galaxy.
Among them, the one that absorbed the most mass began to burn and became the sun today, and the others evolved into planets and dwarf planets, and our solar system was born.
The energy of the earth's rotation and rotation comes from the early days of the formation of the solar system, those interstellar fragments that form the earth, their own angular velocity and linear velocity, and then according to the conservation of energy, the earth also inherits the energy of these fragments, if you go further,
The sum of the vectors of the angular velocity of all the fragments becomes the energy of the earth's rotation;
The sum of the vectors of the linear velocities of all the fragments becomes the energy of the Earth's rotation.
We have just pushed forward and said how the energy of the earth's rotation and rotation comes from. Let's talk specifically about how the energy of the earth's rotation will be consumed, and how long it will be consumed in the future.
On Earth, if there is no power source, no machine can continue to rotate, that is because friction on Earth cannot be avoided, and the movement of objects must be resisted.
So in space, will the Rotation of the Earth be resisted?
Of course, in the environment of the local galaxy where our solar system is located, it is roughly 1 atom for every 10 cubic centimeters of space.
You don't look at their small numbers, but the loss is real, and by losing energy in this way, the Earth will stop autobiography in 3000 trillion years.
Of course, this time is much longer than the age at which the universe was born.
As for the tidal locking of the moon and the sun that has just been mentioned, specifically.
The tidal locking of the Moon on the Earth will consume the energy of the Earth's rotation at a scale of about 10 billion years.
And the sun, you don't look at the moon mass is very small, even smaller than the earth, but the sun is too far from the earth, its tidal force impact is much smaller than the moon, estimated the time when the earth is locked by the solar tide, this time is at least 500-100 billion years.
It can also be concluded that the Moon is the most important factor in terms of who makes the Earth slow to transform itself, including the Sun, of course, but the Sun only accounts for 10% of it.
When the Earth was first born, a day and night only took 8 hours, 500 million years later, the Cambrian, a day will take 21 hours, 4.5 billion years later, a day takes 24 hours, until now, the Earth is still slowing down at 0.7 milliseconds per year, it is estimated that after 100 million years, the Earth will take 25 hours to rotate a day.
A machine, after turning off the power, from operation to stop, less than a few seconds, more than a few hours, to our human "longevity" mammal, we can easily draw the right conclusion, however, the earth was born 4.5 billion years, even if we were born from the first ape as the beginning of human civilization, it is only a short 200,000 years, this is only 4.5 billion years of 1/22500, with a light as a feather to compare I think it is inappropriate, we have heard the story, Most of them come from the last 200 years or so, and the time you have personally experienced the whole thing yourself may only be just over 10 years, which is really nothing for the vicissitudes experienced by the earth.
10 billion years, is the life of our sun, after which, the sun will become a red giant, expanding more than 230 times, when it will engulf or even liquefy the entire earth, then, the entire solar system may be a big mess, there may be planets falling into the sun, resulting in a new round of supernova explosions, its interstellar dust may form a new earth, a new sun, and rotate again and again, until it is destroyed again, and it is reincarnated again.
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