Explore and discuss scientific issues, adhere to an objective and rigorous attitude!
Is Eucalyptus the culprit in Australian forest fires?
If you have been to Australia, you will not only be attracted by the unique animals in the area, but also a tree that will impress you-eucalyptus, which is also the national tree of Australia.
How much mass is converted into energy in a nuclear explosion?
The mass energy equation states that even a small mass loss will be accompanied by a huge energy release. For a 300,000 tons of TNT equivalent nuclear bomb, the mass loss is about 14 grams.
Australian forest fires have been raging for several months. Can artificial rainfall extinguish fires?
Since September 2019, forest fires are raging in Australia. At present, the forest fires have not weakened, but have become more and more fierce.
In addition to electric eels, what other animals can discharge?
There are dozens of animals that can discharge on the earth. The more famous electric eels 300 ~ 800V known as "underwater high-voltage lines", "undersea electric shockers" 鳐 ~ 40V, "underwater generators"Electric power 200 ~ 450V and so on.
In the Milky Way, are there any planets that do not orbit around any stars?
Astronomy estimates that in our galaxy, there are at least one billion stray planets that do not belong to any star system; even outside our galaxy, there will be many planets that do not belong to any galaxy.
In mathematics, why is the factorial of zero equal to 1?
After analyzing and extending the factorial, we can get the famous gamma function. According to the gamma function, we can get "0! = 1".
How is the grain-cement of contemporary architecture manufactured and how it has undergone ...
Cement is a cementitious material in construction. The invention of modern cement dates back to 1756. The main component of our common cement is silicate. After hydration reaction, silicate will condense and harden and combine with sand and gravel.Strong concrete structure.
The Orion Nebula is not in the Milky Way, how far is it from us?
The Orion Nebula M42 is a nebula in the Milky Way galaxy, about 1500 light-years away from Earth. It is located on the Milky Way's Orion cantilever, with a diameter of 16 light-years, and it is pregnant with many young stars.
If a person dies while dreaming, will his consciousness always be in the dream ...
"Dream" is perhaps the best way for humans to understand consciousness. The earliest research on human dreams with scientific theory was Austrian psychologist Sigmund Freud, who divided human consciousness into three types:, Preconscious and subconscious.
Why do magnets attract and repel each other? What are the scientific principles ...
Charges have the same principle of repulsion and attraction of the opposite sex. The magnetic field generated by moving charges also has the characteristics of repulsion and attraction of the opposite sex.
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