Install a photovoltaic power plant, but don't know how to evaluate and calculate your own electricity revenue? Do not know each householder to has had such trouble? Whether you have or not, after reading this article today, you are sure to get the answer you want! After household photovoltaic installation, what is the revenue situation? …
How to evaluate and calculate the power station revenue? Read More »
Education is over. I want to give us a small gift to our 41 students. The budget is within 120, except sugar!
Due to the limited resources and population capacity of the Earth, when the number of human beings reaches the threshold, it is necessary to migrate from outer space. Considering the limited level of science and technology at present, and the distance between stars and stars in the universe is often several light years, the target …
For the first time, scientists have produced oxygen on Mars Read More »
For thousands of years, humans believed that the Earth was the center of the universe, and that the stars at night and the sun at day revolved around it. When humans invented telescopes and even went out of the Earth, they finally found that beyond the earth was a much larger space, containing hundreds of …
Whether the universe is 13.8 billion years old and has a boundary Read More »
If one day humans disappeared, the earth became riddled with holes in disasters, high-rise buildings were gradually ground into rubble by nature. Is there anything in the universe that can prove the existence of brilliant human civilization? The answer is yes, it is not only on the earth, but from the tens of billions of …
Time is equal for everyone. There are 24 hours a day for anyone. For a long time, both statements were incredibly true. However, as the accuracy of scientific measurements improved, especially in understanding the basic conditions of the Earth, scientists began to see that the rotation rate of the Earth was not constant, but had …
The earth has been changing so fast that there are less than 24 hours in a day Read More »
