Who was the first man who said earth is a globe (not flat) ?

Answer 1

I'm pretty sure it was Aristarchus of Samos (310-230 BCE) that first suggested it, but it was Eratosthenes (276-195 BCE) that proved it.

Answer 2

Aristotle provided observational evidence for the spherical Earth:

Ships actually recede over the horizon, disappearing hull-first. In a flat-earth model, they should simply get smaller and smaller until no longer visible, assuming that light travels in a straight line.
Travelers going south see southern constellations rise higher above the horizon. This is only possible if their "straight up" direction is at an angle to northerners' "straight up". Thus Earth's surface cannot be flat.
The border of the shadow of Earth on the Moon during the partial phase of a lunar eclipse is always circular, no matter how high the Moon is over the horizon. Only a sphere casts a circular shadow in every direction, whereas a circular disk casts an elliptical shadow in most directions.

Answer 3

Nicholas Copernicus invented the heliocentric system and proved that the sun was the center of the solar system, not the earth, and also that the sun, the earth and the moon were all shaped like balls.

The first globe actually noted in history was the 1492 world globe made by the German map-maker Martin Behaim .

Answer 4

In 1610, Galileo first noted an observation of the moons of Jupiter. This observation upset the notion that all celestial bodies must revolve around the Earth. However, Cleomedes wrote the book "On the Circular Motions of the Celestial Bodies" around 370 C.E. and conjectured that the shadow on the Moon suggests a spherical Earth. And then Pythagoras (550 B.C.E) espoused the concept of a spherical Earth but more for reasons of aesthetics.

Answer 5

You should have read an earlier reply of mine. I am certain that sailors and nomadic people would have known thousands of years ago, because when you travel the oceans or walk across huge plan plains, you can see distant mountains "rise up" over the horizon, or slowly disappear as you go away from the. It is hard to believe that over the course of thousands of years, and the travels of millions of people, some people didn't suss out that the Earth is curved, even if not a globe.

The problem with the ancient academics of Greece, Rome, and through to our medieval societies, was that they firstly did not travel, but pontificated on science from their monasteries and forums. Also, they had a religious picture of the Earth and its position in the heavens, and could not get past that image.

When simple nomads or sailors came back from their travels and said, "but that aint what it is like", who would listen to them? Up to the Middle Ages it was heresy to argue against the clerics and academics and to argue against these people often meant you were in deep trouble.

Thank God we live in enlightened times, and are allowed to think freely.

Answer 6

Christopher Columbus (ca. 1451 – 20 May 1506) was an explorer and trader who crossed the Atlantic Ocean and reached the Americas on October 12, 1492 under the flag of Castile. History places great significance on his landing in America in 1492, with the entire period of the history of the Americas before this date usually known as Pre-Columbian, and the anniversary of this event, Columbus Day, being celebrated in many parts of America. Although there is evidence of Pre-Columbian trans-Atlantic Ocean European contact, Columbus is commonly credited as the first European to see the Americas because of the profound impact his contact wrought on history. His voyage marked the beginning of European exploration and colonization of the Americas. He was married to Felipa Perestrello e Moniz, and had a son named Diego.

Columbus is said to have been born in Genoa, in modern Italy, according to statements attributed to Columbus himself, members of his family, and others who knew him well. However some historians claim he could have been born in other places, from the Crown of Aragón to the Kingdoms of Galicia or Portugal, or in the Greek island of Chios, among others. See the section on Columbus' national origin for a discussion of his origin and names.

Answer 7

Eratosthenes was the first one to prove it to be true, but befor him many, many people had suggested it and they were killed for saying it!!! Some of the first civilizations that thought the earth was round were the Aztecs, the Incas, the Egyptians, and the Romans just to mention a few, but (again) before Eratosthenes was even born many other people had said it and been killed for it!!! If you have any more questions about it go to http://www.phy6.org/stargaze/Scolumb.htm

Answer 8

Eratosthenes of Cyrene (276-194 BC)

He measured the size of the Earth with a clever experiment. Search for it.

Answer 9

Christopher Columbus

Answer 10

It was Galileo I think.

The idea started to proliferate when it was realized that while looking at a sailing ship coming towards you, the first thing you see is the mast and sails before the actual ship comes into view.