There is an urgent need for scientists to have a bumpy success story 5

The story of Nobel's research on explosives: he wanted to research a powerful and safe and reliable explosive to realize people's dream of moving mountains and reclaiming the sea, in order to dig this, he almost died dozens of times, for this, his younger brother and assistant even sacrificed the rent, his father was also injured, the neighbors drove him away, he didn't care, and finally his face was covered with blood, but he didn't care, only that Wu Manuscript said that he had finally succeeded, and shouted happily while running.

Galileo Galilei was one of the great Italian scientists of the 17th century. At that time, the people who studied science believed in Aristotle, and took the words of the Greek philosopher more than 2,000 years ago as an unchangeable truth. Aristotle once said:

Two iron balls, one 10-pound and one 1-pound, fall from a height at the same time, and the 10-pound one must land first, 10 times faster than 1 pound. This sentence raised Galileo's questions. He thought:

If this statement is correct, then if you tie these two iron balls together, the slow falling will drag the fast falling one, and the falling speed will be slower than the 10-pound iron ball; However, if you look at these two iron balls as a whole, they weigh 11 pounds and should fall faster than a 10-pound iron ball. How can we explain that two opposite conclusions can be drawn from one fact? With this question in mind, Galileo repeated many experiments, and the results proved that Aristotle's statement was indeed wrong.

Two iron balls of different weights fall from a high place at the same time, always hitting the ground at the same time. The speed at which the ball falls has nothing to do with its weight. He was going to do a public experiment on the Leaning Tower of Pisa.

Word spread quickly. On that day, many people came around the Leaning Tower to see who was the victor in this matter. Galileo appeared on top of the Leaning Tower.

He holds a 10-pound iron ball in his right hand and a 1-pound iron ball in his left hand. The two iron balls came out of their hands at the same time and fell from the air. After a while, the people around the leaning tower could not help but cry out in surprise, because the two iron balls hit the ground at the same time, just like Galileo said.

At this time, everyone realized that Aristotle was not all right.

The story of Nobel's research on explosives: he wanted to research a powerful and safe and reliable explosive to realize people's dream of moving mountains and reclaiming the sea, for this, he almost died dozens of times, for this, his brother and assistant even died, his father was also injured, the neighbors drove him away, he didn't care, and finally his face was covered with blood, but he didn't care, he only knew that he had finally succeeded, and shouted happily while running.

Edison invents the electric lightMarie Curie invented radium.