We all know that absolutely everything is visible andthe invisible in the universe consists of atoms (dark matter does not count, since no one really knows what it consists of). Each such particle contains a nucleus and electrons that revolve around it, being bound to the nucleus due to electromagnetic interaction. However, the nucleus of an atom is so small that if you mentally imagine an atom stretched to the size of a football field, its nucleus will be as small as a poppy seed. Why does an atom need so much extra space and is it true that our Universe is 99% empty?
Why can't we walk through walls?
Despite the fact that most of the atomconstitutes a void, its tiny constituents - electrons, play a very important role in the "filling" of this void. So, although there are usually very few electrons in an atom, their behavior is akin to a large flock of birds, in which, with synchronous movement, there is no clear boundary. Everything that we can see with such a movement is a chaotically changing indefinite form. Electrons, constantly changing their location in the atom, move strictly according to the equation, which in the XX century was first described by the famous scientist Erwin Schrodinger. Yes, the same scientist who loved to put quantum experiments on cats.
See also: Quantum experiment showed that objective reality does not exist
Dancing inside an atom, electrons can receive andgive energy coming from outside. That is why light is not able to penetrate through the wall, since the electrons of the atoms of the wall simply take the energy of light, giving it away after a short period of time. Thanks to this phenomenon of receiving and giving back light, the wall next to you seems solid and opaque.
Can the universe be empty?
The universe is famous for objects that are capable ofto surprise with the colossal size of any earthly skeptic. So, the largest object in the part of the Universe that we studied is recognized as an object called astronomers the Great Wall of Hercules - the Northern Crown. The giant structure extends as much as 10 billion light-years and is a huge number of galaxies assembled together in different shapes and sizes.
Compared to the gigantic structure, ourThe Solar System appears to be a small point, lost somewhere far on the edge of the Milky Way galaxy. Despite this, the gravitational field of our Sun (and not only it, but also other stars of the Universe) is several thousand times larger than its own size. Thanks to such wise tuning, planets can revolve around the orbits of their stars, without fear of flying somewhere far into deep space.
A similar situation arises inside the atom. The ratio of the sizes of electrons, the atomic nucleus and the distances between them is extremely reminiscent of the ratio of the sizes of cosmic bodies and their distances in the macrocosm. In other words, the vast distances within the atom can shed light on the question of the possible emptiness of the universe.
If so, then the universe is really 99%consists of emptiness, while 1% of all matter visible to the eye creates the surrounding world known to us. Despite this incredible fact, all this enormous “nothing” contains a lot of invisible and still unexplored forces, which, perhaps, we will one day be able to curb.
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