The earth is round, not square, who first discovered it?

As we all know, the earth is round, and humans can see the sky as soon as they look up from anywhere in the world. When human beings explore the universe, they have gradually seen the true appearance of the earth. In fact, in the beginning, human beings did not know that the earth was round, the first was the philosopher Aristotle.

He discovered that the Earth was round instead of square because he was once observing a lunar eclipse.

When I found that the shape of the dark shadow on the lunar surface was arc-shaped.

So the philosopher Aristotle thought that a lunar eclipse is a projection of the earth on the moon, and if the shape of the black shadow is arc, then it is enough to prove that the shape of the earth is actually spherical. Prior to this, the idea that the earth was round was developed by Pythagoras.

It was later proposed by Aristotle to give some scientific evidence by observing a lunar eclipse. After Magellan the Navigator.

He also used his own practical actions to prove that the earth is indeed round rather than square.

The navigator Magellan made a circumnavigation trip around the world at the beginning of the 16th century, which was the first scientific method to prove that the earth is round, but the idea that the earth is round was not proposed by him, Magellan only gave scientific proof with his own practical actions. Whoever discovered it first, these scientists.

The study of the earth is commendable. Later, after a long period of precise measurements of the earth, scientists found that the earth is not a regular sphere as people think, but an irregular elliptical sphere.

However, if you look at the earth from the perspective of space, you will still find that the earth is a regular sphere, because the difference between the radius of the earth's equator and the average radius of the earth is very small, and it is difficult to detect it with the naked eye alone, so people are making globes.

, usually make the earth into a regular sphere. The earth is definitely a sphere as the name suggests, and the shape of the sphere is mostly round, if the earth is square, then it is estimated that it is not called the earth. Whether it was Aristotle, Pythagoras or Magellan, their discoveries still played a great role in the study of the earth.

The earth is round and was first discovered by Magellan, who was really a great scientist.

In the 16th century, a Portuguese navigator named Magellan discovered that the earth was not square, but round, based on his practical experience and theoretical knowledge. Magellan's doctrine has been questioned by many people, because many people have the impression that the earth should be square, not round.

The earth is round and was discovered by Magellan.

It was Pythagoras who first proposed that the earth is round, and it was the great philosopher Aristotle who first discovered that the earth is round. The first scientific proof that the earth was round was a circumnavigation of the world organized by the Portuguese navigator Magellan in the early 16th century.

Magellan's circumnavigation of the world is a major achievement in the history of world navigation, which was the departure of the expedition led by the Portuguese explorer Magellan on September 20, 1519 and the successful return on September 6, 1522, which lasted 1,082 days. Magellan's successful circumnavigation of the globe not only opened new routes, but also proved that the earth is round and that the earth is a round sphere through the expeditions carried out by his expeditionary fleet.

This was the most critical, important, and difficult part of the circumnavigation voyage, and the previous and subsequent exploratory sections were inferior in every way. For example, the stretch from the Río de la Plata to the exit of the Strait of Magellan, although important and geographically discoverable, is a coastal expedition that is less exploratory and less dangerous than the crossing of the Pacific Ocean.

After arriving in the Philippines, the voyage is already in the waters that civilized humans have sailed many times, and the risk is even lower. Therefore, it constitutes the most crucial part of the round-the-world voyage, and without the success of the Pacific crossing, there will be no success in the round-the-world voyage.

Magellan's main influences:

The discovery of many islands in the Pacific Ocean, the discovery of the Large Magellanic Nebula and the Southern Cross, and in particular, the preliminary determination of how large and wide the Pacific Ocean may be, filled in many gaps in this area on the world map and globe, and made a big step forward in perfecting it. The hypothesis that the sea is land and the hypothesis that the sea is connected is fully confirmed, which indicates that any ocean can be reached by boat as long as it is not frozen.

The Philippines, which was already facing the threat of Portugal from the southwest, was now facing an even greater threat from Spain from the east, and was finally reduced to a Spanish colony.

Aristotle, the ancient Greek philosopher, observed that when the lunar eclipse occurs, the shadow of the earth is round, and the whole world is like this, so the earth is spherical. Later, a mathematician, Ellat Djani, discovered that there was a well in Alexandria, and the sunlight could reach the bottom of the well during the summer solstice! And Aswan also has a well, the sun can not reach the bottom of the well during the summer solstice, he calculated the circumference of the earth according to the distance and angle of the two places 40,000 kilometers This figure is very accurate!

With the fall of the Eastern Roman Empire in the 15th century, scholars fled to Europe and used storytelling as a means of making a living, which indirectly contributed to the "Renaissance"! The Spaniards also accepted the idea of the earth, and in order to find a route to the east without passing through the checkpoints, Magellan's fleet sailed west! It's always been westward, but it's back to the starting point!

It confirms that the earth is round.

The first person to propose that the earth was round was Pythagoras. Pythagoras, ancient Greek mathematician and philosopher. Pythago, who was a bright and studious child, studied geometry, natural sciences and philosophy under famous teachers.

The fact that the earth is round was proposed by Pythagoras, Aristotle gave scientific evidence, and the navigator Magellan proved that the earth is indeed spherical with practical actions.

The concept that the Earth is spherical was first introduced BC.

Pythagoras, the ancient Greek philosopher of the fifth and sixth centuries. But this belief of his was only based on his belief that the sphere was the most perfect of all geometric forms, and not on the basis of any objective fact.

Aristotle gave the first scientific evidence that the earth was spherical based on the fact that the shadow of the earth appeared on the surface of the moon at the time of the lunar eclipse was circular.

In the 3rd century B.C., the ancient Greek astronomer Eratosthenes calculated the circumference of the Earth for the first time based on the sunlight shining at noon and the distance between the two observation sites.

Pythagoras proved that the earth is round.

Pythagoras, ancient Greek mathematician and philosopher. Pythagoras was born into an aristocratic family on the island of Samos (present-day eastern Greek island) in the Aegean Sea, and was a bright and studious child, studying geometry, natural sciences, and philosophy under famous teachers.

Because of his yearning for the wisdom of the East, he traveled through thousands of rivers and mountains, and traveled to Babylon and India, as well as Egypt (disputed), two ancient civilizations with extremely high cultural standards in the world at that time, and absorbed the culture of Mesopotamian civilization and Indian civilization (480 BC). He later traveled to southern Italy to teach mathematics and propagate his philosophical ideas, and formed a political and religious group called the "Pythagoreans" with his followers.

The Pythagorean art of numbers.

The Pythagoreans believed that "1" was the first principle of number, the mother of all things, and wisdom; "2" is the principle of opposition and negation, is opinion; "3" is the form and form of all things; "4" is justice, a symbol of the creator of the universe.

5" is odd and even, male and female and combined, also marriage; "6" is the life of God, the soul; "7" is an opportunity; "8" is harmony, but also love and friendship; "9" is rational and powerful; "10" encompasses all numbers, is perfect and beautiful. <>