yes
The idea that the world was round dates back to ancient Greek philosopher Pythagoras in the 6th century BC. However, it was Aristotle and later astronomers like Eratosthenes who provided further evidence and calculations supporting a spherical Earth. Christopher Columbus also famously demonstrated this when he sailed around the world in 1492.
that the earth was not flat nor square but it was round
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.
Eratosthenes measured the size of Earth by using the Sun's angles, as well as a bit of geometry.
Christopher Columbus is often credited with proving that the world is round during his famous voyage in 1492, although the concept of a round Earth was already known in ancient times by scholars like Pythagoras and Aristotle. Columbus's journey, which he thought would lead him to Asia but instead led him to the Americas, helped to further confirm the spherical shape of the Earth.
The sieve of Eratosthenes was discovered in 223 BC.
Eratosthenes
no but gallileo did
galileo galili
will butson
yes
by boat it took them 1 year
Although Ferdinand Magellan's expedition was the first circumnavigation of the Earth, many ancient scholars were already aware that the Earth was round. The Greek scientist Eratosthenes was the first to calculate the Earth's circumference, thus proving the Earth's roundness.
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The idea that the world was round dates back to ancient Greek philosopher Pythagoras in the 6th century BC. However, it was Aristotle and later astronomers like Eratosthenes who provided further evidence and calculations supporting a spherical Earth. Christopher Columbus also famously demonstrated this when he sailed around the world in 1492.
eratosthenes discovered the circumfrance of the world. he was known as the first successful measurement.
He did not do so. Earth was well-known to be a globe for at least two hundred years before Eratosthenes' time. What Eratosthenes did was to measure the earth's circumference for the first time. He did that at some time between 236 BC and 195 BC.