Eratosthenes
Claudius Ptolemy was an ancient Greek astronomer, mathematician, and geographer who lived in the 2nd century. He is known for his work on astronomy, including the creation of a geocentric model of the universe known as the Ptolemaic system.
Hipparchus of Niceau was a Greek astronomer, geographer, and mathematician who lived from 190BC to 120BC. Many consider him to be the greatest astronomer of antiquity for his numerous contributions to the field. He created accurate models for the motion of the Moon and Sun, developed trigonometric theory and tables, compiled a comprehensive star catalog of the western world, invented numerous apparatus such as the astrolabe to aid in astronomical measurement, and developed a systematic method for predicting eclipses. In addition, much of his work was used as the basis for the work of Ptolemy in similar fields, almost 3 centuries after his death.
Eratosthenes of Cyrene was a Greek polymath: a mathematician, geographer, poet, astronomer, and music theorist. He was a man of learning, becoming the chief librarian at the Library of Alexandria. His work is comparable to what is now known as the study of geography, and he introduced some of the terminology still used today.
The concept of latitude and longitude dates back to ancient Greece, with the Greek mathematician and astronomer Hipparchus making significant contributions to the development of these coordinate systems around 150 B.C. However, it was the Greek geographer and astronomer Claudius Ptolemy in the 2nd century AD who refined and popularized the use of latitude and longitude for mapping and navigation.
In addition to correctly determining the size of the Earth and finding correct methods for determining the size of the Moon and the distance to the Moon and Sun, he was the head of the largest library in the western world (Alexandria in northern Egypt) and must have had many students.
si eratosthenes ay isang Greek astronomer geographer, at isang mathematician. Siya ay nanggaling sa mars
Eratosthenes of Cyrene was a Greek mathematician, elegiac poet, athlete, geographer, and astronomer. He was the first person to calculate the circumference of the earth by using a measuring system using stades, or the length of stadiums during that time period, and the tilt of the earth's axis.
Eratosthenes was a Greek mathematician, geographer, poet, and astronomer who lived in the third century BCE. He is best known for accurately calculating the circumference of the Earth using a method involving shadows and geometry. Eratosthenes also made significant contributions to astronomy, geography, and mathematics during his lifetime.
Eratosthenes was a Greek mathematician, astronomer, and poet who lived in the 3rd century BCE in Alexandria, Egypt. He is known for being one of the first to calculate the circumference of the Earth, and he also made significant contributions to geography by creating one of the earliest known maps of the world.
He was an ancient Greek mathematician of the 2nd/3rd century BC, as well as a poet, geographer, musical composer, scholar, and astronomer. He was the first Greek to estimate the circumference and tilt of the earth. He created a map of the earth based on the knowledge available at the time. He was highly respected, and his calculations of the earth's circumference were used for hundreds of years. Today, his method for finding prime numbers from 1-100 is known as the 'Sieve of Eratosthenes' and is taught in math textbooks.
Eratosthenes was born in Cyrene, Shahhat, Libya in 276 BC and died in Alexandria, Egypt in 194 BC. He was an astronomer, mathematician, and geographer, who eventually became the chief librarian at the Library of Alexandria.
Who is 'marcator'? , I think you mean 'Mercator' , the Dutch geographer and astronomer.
Zhang Heng, a Chinese astronomer, mathematician, inventor, geographer, cartographer, artist, poet, statesman, and literary scholar was from Nanyang, Henan, and probably invented his primitive instrument there. Links can be found below for more information.
Ptolemy was a Roman citizen of Egypt who had wrote in Greek. He was a mathematician, astronomer, geographer, astrologer, and a poet of a single epigram in the Greek Anthology. He lived in Egypt under a Roman rule and is believed to have been born in the town of Ptolemais Hermiou in the Thebaid. He died in Alexandria around AD 168.
Claudius Ptolemy worked in Alexandria, Egypt during the second century AD. He was a Greco-Roman mathematician, astronomer, and geographer known for his influential works on astronomy and geography.
Eratosthenes of Cyrene (276 BC - 194 BC) was a Greek mathematician, poet, athlete, geographer and astronomer. He made several remarkable discoveries and inventions: he devised a system of latitude and longitude. He was the first person to calculate the circumference of the Earth with remarkable accuracy, and the tilt of the earth's axis.
Eratosthenes, who lived from around 276 to 194 BCE, was a Greek mathematician, astronomer, and geographer. He is best known for calculating the Earth's circumference with remarkable accuracy and for creating one of the earliest maps of the known world. During his life, he served as the chief librarian at the Library of Alexandria, a major center of scholarship in the ancient world. His work laid foundational principles for later developments in mathematics and geography.