Scientific Exploration Bacteria
focus on high-quality popular science creation in astrophysics
4.5 billion years have passed since the birth of the earth, so how long is the life of the earth?
A person's normal life span is at most 100 years, and human beings have been breeding on the earth for millions of years. The birth of the earth has a history of 4.5 billion years. Star-moving, how long is the life of Mother Earth?
What is the nature of magnetic field lines and magnetic fields?
Magnetic field lines are also called magnetic field lines. Magnetic field lines are not real, but are a method that can be imagined by humans to describe the magnetic field distribution around a magnet. This method was first proposed by Faraday.
A straight line is a circle with infinite radius. Is this true?
A straight line is a circle with infinite radius. This view is correct in projective geometry.
Is there an upper limit to the frequency of electromagnetic waves?
When an atomic nucleus undergoes an energy level transition, gamma rays are generated. It exists in nuclear weapons and nuclear reactors, and it can cause very great harm to the human body. Is there any electromagnetic wave with a higher frequency than gamma rays?Is there an upper limit to the frequency of electromagnetic waves?
The earth is a rocky planet. How are so many rocks formed?
The main constituents of a wood-like planet are hydrogen and helium, which are also the main constituents of the sun. So how are the rocks of rocky planets like Earth formed?
Pulsar density is as high as 1 billion tons per cubic centimeter, what is such a high density ...
Pulsar is a rotating neutron star
Is there a pixel in the mirror? Why can't the mobile phone camera do the same effect as the mirror ...
At present, the number of pixels of the front camera of the mobile phone has reached 30 million. Using the front camera of the mobile phone as a mirror, the effect is not ideal. So does the mirror have pixels? Why is the mobile phone camera not as good as a mirror?
Water and air are both colorless and transparent, why can we see water but not empty ...
Pure water is colorless and transparent, and clean air is also colorless and transparent. Why can't humans see water when they can't see the air? The same colorless and transparent substance, why is there such a difference?
Can a person push a suspension weighing 100 tons?
Netizens ask: An object weighing 100 tons is suspended in the air by a strong enough rope. If you push the object with your hand, will it shake like a swing?
Exploring the universe, what secret is hidden in the starlight?
Through spectral analysis technology, we can discover the secret hidden in the starlight.
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