Science
What would happen to the Earth if the sun suddenly disappeared?
What would happen to the Earth if the sun suddenly disappeared? The answer, of course, is that the Earth will undergo a dramatic change, but in the moment of the disappearance of the sun, the Earth will not immediately change, because the speed of propagation of solar light and gravity is the speed of light, about 300,000 kilometers per second, and the average distance between the Earth and the sun is about 150 million kilometers, so in about 500 seconds, the Earth's dramatic change will begin, and from then on to kick off a difficult human survival.
By Apostolakis3 years ago in Earth
The world is virtual?
Our human perception of the outside world is the result of our brain's processing of various bio-electric signals generated, for example, our visual system will convert the external light into bio-electric signals, and then these signals will be transmitted to the brain, after the brain's processing, we "see" the outside world, the same, our Hearing, touch, smell, the taste is also produced in this way.
By Carlo Phil3 years ago in Earth
How scary is Mount Fuji in Japan?
Located in Japan's Mount Fuji, a world-famous scenic spot, is also an active volcano, recently, news that Mount Fuji seems a bit stupid, undoubtedly triggered concern, then Mount Fuji in the end how terrible? If Mount Fuji erupts, how serious are the consequences? Here we will talk about this topic.
By Baudamolova3 years ago in Earth
Is there a planet in the universe with a diameter of 1 light-year?
Does a planet with a diameter of 1 light year exist in the universe? One of the more common thoughts on this question is that it is not impossible to form a planet with a diameter of 1 light-year if there is enough matter, yet according to the laws of the universe as we know them, such a thing is simply not possible.
By Deljewitzki3 years ago in Earth
Put the compressed spring into strong acid
The spring itself is elastic, after being compressed, the spring will have the tendency to return to its initial state, and therefore has elastic potential energy, which we can see as the energy stored in the spring as a whole system, so the question arises: if the compressed spring is put into a strong acid, then after the spring dissolves, where does the energy of the spring go?
By Apostolakis3 years ago in Earth
Is the sun suspended in the universe?
We often imagine the solar system as follows: the sun is at the center of the solar system without moving, while the eight planets and many other celestial bodies in the solar system are orbiting around the sun in an orderly manner, and the earth is also a member of it, which begs the question, is the sun suspended in the universe?
By Carlo Phil3 years ago in Earth
What exists in the vast space between the nucleus and the electron?
Atoms were once thought to be the basic particles of everything in the world, but it has since been discovered that atoms are composed of nuclei and electrons and that there is still a vast space between the nucleus and the electrons - just how vast? We may take the simplest atom in the universe - the hydrogen atom to illustrate.
By Baudamolova3 years ago in Earth
Peculiar crystals found in particles of the Chelyabinsk meteorite shattered by a UFO
There are a huge number of small objects in our solar system. They are very small in mass and usually fast in speed, and their orbits can easily become unstable due to the influence of other objects, so there are often some small objects crashing into the Earth.
By Deljewitzki3 years ago in Earth
Northeast Tiger: An Uncertain Future
On April 23, residents of Baishiwan Town, Mishan City, Heilongjiang Province, found a local northeastern tiger, which was initially determined by professionals to be "most likely a wild northeastern tiger". During the search process, a villager was bitten and taken to the hospital for treatment. At 21:00 that night, the tiger was shot by the police with a tranquilizer gun and has been sent to the Hengdaohezi Feline Breeding and Breeding Center in good health.
By Deena Thaddeus3 years ago in Earth
