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240 BCE
Eratosthenes
Eratosthenes is known for his achievement in astronomy. One of those achievements was that he tried to accurately measure the circumference of the earth and found that the circumference of the earth was almost 250,000 stadia (25,000 miles) besides that of calculating the size of the earth that discovery was important because if he did not find discovered at that time that they would have lasted a long time to find out. In about 240 BC Eratosthenes calculated Earth’s size with good accuracy. -
127 BCE
Claudius Ptolemy
The discovery of Ptolemy was that he believed that the earth was the center of the universe. the theory called "geocentric". Although this theory is considered incorrect thanks to this theory he was able to combine what he saw of the movements of the stars with the mathematics, his famous work was called Almagesti. Discovery date 26 March 127 while the last was made on 2 February 141 -
1514
Nicolaus Copernicus
Nicolaus Copernicus the discovery of the was that the planets revolved around the sun he created a model that was not quite correct but left that for future scientists so they could build and improve the understanding of humanity about the movement of the celestial bodies. He made a book leaving all his research published in 1543 two months before he died, the discovery of it was important since it helped the scientists of the future -
Tycho Brahe
Tycho Brahe was a nobleman who believed that the universe was not true with the earth in the center. He was one of the individuals whose work helped to nullify that belief in favor of a heliocentric model of the universe, with the sun in the center. He followed his investigations on one island of Hveen to carry out his work. It was there that Brahe hired many people to build advanced astronomical instruments and carry out observations in the sky (1546-1601). -
Johannes Kepler
Johannes Kepler created three laws of the planetary movement whose analysis of the observations of the Danish astronomer of the 16th century Tycho Brahe allowed him to announce his first two laws in the year 1609 and a third law almost a decade later, in 1618. Kepler himself never numbered these laws or especially distinguished them from their other discoveries. Johannes Kepler published his first two laws on planetary motion in 1609. Kepler's third law was published in 1619. -
Sir Isaac Newton
Sir Isaac Newton invented the calculation (simultaneously but independently of Leibniz), he formulated the law of gravity and discovered the laws of motion. Newton's Law of Gravitation (formulated in 1666) describes the gravitational pull between objects; the strength of its gravitational attraction (F) depends only on its masses and the distance between them, according to the formula F = Gm1m2 / r2. what the find helped to improve the science -
Albert Einstein
Albert Einstein made special relativity This new theory established that the laws of physics had to have the same form in any frame of reference. Also in 1911 Einstein was able to make preliminary predictions about how a ray of light from a distant star, passing close to the Sun, seems to be slightly bent, in the direction of the Sun. Einstein also made vain attempts to unify all the forces of the universe in one only theory but died before finishing it.
