Italian scientist Galileo galilei

Galileo was born in Pisa, Italy on 1564, next to the famous leaning tower of Pisa. His father is a bankrupt aristocrat. When Galileo came into this world, his family was already poor. /kloc-At the age of 0/7, Galileo was admitted to the University of Pisa. In college, Galileo not only studied hard, but also liked to ask questions to his teachers. Even if it is something that people are used to, he will get to the bottom of it, and it will be clear at a glance.

Keep your eyes on the ceiling

Once, he stood in the Catholic church in Pisa, staring at the ceiling, motionless. What is he doing? It turned out that he followed the pulse of his left hand with his right hand and looked at the light swinging back and forth on the ceiling. He found that although the swing of the lamp is getting weaker and weaker, the distance of each swing is gradually shortened, but the time required for each swing is the same. So Galileo made a pendulum with a suitable length to measure the speed and uniformity of the pulse. From here, he discovered the law of pendulum. This clock is made according to the law he discovered.

If you drop out of school, study hard.

The poverty of family life forced Galileo to leave college early. After dropping out of school, Galileo still studied hard at home. Thanks to his continuous efforts, he has made excellent achievements in mathematics research. At the same time, he also invented the pycnometer and wrote a paper entitled "The Center of Gravity of Solids". At this time, Galileo, 2 1 year-old, has become famous all over the country, and people call him "the contemporary Archimedes". At the age of 25, Pisa University made an exception and hired him as a professor of mathematics.

The world-famous falling body experiment

Before Galileo, Aristotle in ancient Greece thought that the speed of falling objects was different. Its falling speed is proportional to its weight. The heavier the object, the faster it falls. For example, an object weighing 10 kg falls 1 0 times faster than an object weighing1kg.

Since 1700 years ago, people have always regarded this theory that violates the laws of nature as an indisputable truth. Young Galileo boldly questioned Aristotle's theory based on his own empirical reasoning. After careful consideration, he decided to do an experiment by himself. He chose the Leaning Tower of Pisa as the experimental field. On this day, he brought two iron balls with the same size but different weights, one of which weighed 100 Jin and was solid; The other one weighs 1 kg and is hollow. Galileo stood on the leaning tower of Pisa and looked under it. The tower was crowded with people who came to watch, and everyone was talking about it. Someone sarcastically said, "This young man must be crazy! Aristotle's theory cannot be wrong! " The experiment began. Galileo took an iron ball in each hand and shouted, "Look carefully, people below, the iron ball is going to fall." With that, he opened his hands at the same time. People saw two iron balls falling in parallel and falling to the ground almost at the same time. All the people were dumbfounded. Galileo's experiment revealed the secret of falling body movement and overthrew Aristotle's theory. This experiment is of epoch-making significance in the history of physics development.

Made the first telescope.

Copernicus was an outstanding Polish astronomer. After 40 years of astronomical observation, he put forward "Heliocentrism". He thinks that the center of the universe is the sun, not the earth. The earth is an ordinary planet, which revolves around the sun while rotating. Galileo believed in Copernicus' "Heliocentrism" very early. 1608 One day in June, Galileo discovered an empty tube with a convex mirror embedded in one end and a concave mirror embedded in the other end, and made the world's first small astronomical telescope. Experiments show that it can enlarge the original object three times. Galileo was not satisfied, so he further improved and made another one. He took this telescope and ran to the seaside, only to see the vast sea rolling and not seeing a boat. However, when he picked up the telescope and looked into the distance, a ship was coming to the shore from a distance. Practice has proved that it can be enlarged by 8 times. Galileo continued to improve and manufacture, and finally, his telescope could enlarge the original 32 times.

Confirmed Copernicus' Heliocentrism

Every night, Galileo used his telescope to observe the moon. He saw mountains, deep valleys and volcanic cracks on the moon. Later, I began to observe space and explore the mysteries of the universe. He found that the Milky Way is made up of many small stars. He also found that there are black spots in the sun, and the positions of these black spots are constantly changing. So he concluded that the sun itself was spinning. Galileo buried his head in observation and proved with irrefutable facts that the earth revolves around the sun, and the sun is just an ordinary star, thus proving the correctness of Copernicus' theory. 16 10, Galileo published the famous Star Messenger. People admire and say, "Columbus discovered the new continent and Galileo discovered the new universe."

Source: Encyclopedia 2004-0 1-07 Galileo 1564 was born in Pisa, Italy, next to the famous Leaning Tower of Pisa. His father is a bankrupt aristocrat. When Galileo came into this world, his family was already poor. /kloc-At the age of 0/7, Galileo was admitted to the University of Pisa. In college, Galileo not only studied hard, but also liked to ask questions to his teachers. Even if it is something that people are used to, he will get to the bottom of it, and it will be clear at a glance.

Keep your eyes on the ceiling

Once, he stood in the Catholic church in Pisa, staring at the ceiling, motionless. What is he doing? It turned out that he followed the pulse of his left hand with his right hand and looked at the light swinging back and forth on the ceiling. He found that although the swing of the lamp is getting weaker and weaker, the distance of each swing is gradually shortened, but the time required for each swing is the same. So Galileo made a pendulum with a suitable length to measure the speed and uniformity of the pulse. From here, he discovered the law of pendulum. This clock is made according to the law he discovered.

If you drop out of school, study hard.

The poverty of family life forced Galileo to leave college early. After dropping out of school, Galileo still studied hard at home. Thanks to his continuous efforts, he has made excellent achievements in mathematics research. At the same time, he also invented the pycnometer and wrote a paper entitled "The Center of Gravity of Solids". At this time, Galileo, 2 1 year-old, has become famous all over the country, and people call him "the contemporary Archimedes". At the age of 25, Pisa University made an exception and hired him as a professor of mathematics.

The world-famous falling body experiment

Before Galileo, Aristotle in ancient Greece thought that the speed of falling objects was different. Its falling speed is proportional to its weight. The heavier the object, the faster it falls. For example, an object weighing 10 kg falls 1 0 times faster than an object weighing1kg.

Since 1700 years ago, people have always regarded this theory that violates the laws of nature as an indisputable truth. Young Galileo boldly questioned Aristotle's theory based on his own empirical reasoning. After careful consideration, he decided to do an experiment by himself. He chose the Leaning Tower of Pisa as the experimental field. On this day, he brought two iron balls with the same size but different weights, one of which weighed 100 Jin and was solid; The other one weighs 1 kg and is hollow. Galileo stood on the leaning tower of Pisa and looked under it. The tower was crowded with people who came to watch, and everyone was talking about it. Someone sarcastically said, "This young man must be crazy! Aristotle's theory cannot be wrong! " The experiment began. Galileo took an iron ball in each hand and shouted, "Look carefully, people below, the iron ball is going to fall." With that, he opened his hands at the same time. People saw two iron balls falling in parallel and falling to the ground almost at the same time. All the people were dumbfounded. Galileo's experiment revealed the secret of falling body movement and overthrew Aristotle's theory. This experiment is of epoch-making significance in the history of physics development.

Made the first telescope.

Copernicus was an outstanding Polish astronomer. After 40 years of astronomical observation, he put forward "Heliocentrism". He thinks that the center of the universe is the sun, not the earth. The earth is an ordinary planet, which revolves around the sun while rotating. Galileo believed in Copernicus' "Heliocentrism" very early. 1608 One day in June, Galileo discovered an empty tube with a convex mirror embedded in one end and a concave mirror embedded in the other end, and made the world's first small astronomical telescope. Experiments show that it can enlarge the original object three times. Galileo was not satisfied, so he further improved and made another one. He took this telescope and ran to the seaside, only to see the vast sea rolling and not seeing a boat. However, when he picked up the telescope and looked into the distance, a ship was coming to the shore from a distance. Practice has proved that it can be enlarged by 8 times. Galileo continued to improve and manufacture, and finally, his telescope could enlarge the original 32 times.

Confirmed Copernicus' Heliocentrism

Every night, Galileo used his telescope to observe the moon. He saw mountains, deep valleys and volcanic cracks on the moon. Later, I began to observe space and explore the mysteries of the universe. He found that the Milky Way is made up of many small stars. He also found that there are black spots in the sun, and the positions of these black spots are constantly changing. So he concluded that the sun itself was spinning. Galileo buried his head in observation and proved with irrefutable facts that the earth revolves around the sun, and the sun is just an ordinary star, thus proving the correctness of Copernicus' theory. 16 10, Galileo published the famous Star Messenger. People admire and say, "Columbus discovered the new continent and Galileo discovered the new universe."