Proofs That the Earth Is Spherical

There are two main ways scientists learn about Earth’s Interior. The first way is, of rock samples. Scientists use drills to get as close as they can to get to the center of the earth, they also looked at rocks that spat out of volcanos during a volcanic explosion. The second way is, because of seismic waves. They study how seismic waves travel through Earth, seismic waves are vibrations that travel through Earth carrying energy, released during an earthquake. Those were the two main ways how scientists learned about Earth’s interior.

By his vertical placement of the cliff in the right forefront of the picture plane, he further emphasizes the illusion of space. Second, the diminishing size of the sea, cliffs in the background, and the jetty all express depth in the overall scene. The violent cove appears to move away from us in to the open sea. Ante Meridian is an example of atmospheric perspective. The foreground colors are bold and rich, whether it is the white wave caps or the cliff façade, but as the scene retreats in to the distance, the sea, background rocks, and sky become bluer, paler, and less distinct. The objects in the distance are blurrier to demonstrate this open space even more.

Columbus’ postulation that the world was not flat because any educated person in that time new that the world was round.

The Law of ellipses, which means that each planet travels around the sun in an ellipses.

We have learned in basic K-12 schooling that the Earth is spherical in shape. The earliest recording of this concept was c. 6th century BCE in ancient

(between June 20th and June 22nd) the Greek Astronomer, Eratosthenes had heard of a famous well in a Egyptian City called Syene (now known as Aswan) located around the Nile River. He knew that every year on the solstice, there was no shadow on the bottom of well but instead the rays of sunlight reflected back, and not on the sides of the well as on other days. He came to a conclusion that the sun was directly overhead in Syene at noon every year. He knew that in his hometown Alexindra, the sun was never directly above him even on the solstice. He assembled a pole in Alexindra to study and calculate the shadows position eventually proving that no sun was directly above but faintly south. Knowing that the earth was curved and knowing the distance between the two cities, Syene and Alexandra he calculated the planets circumference by doing simple geometry. “Eratosthenes could measure the angle of the Sun’s rays off the vertical by dividing the length of the leg opposite the angle (the length of the shadow) by the leg adjacent to the angle (the height of the pole). This gave him an angle of 7.12 degrees. He knew that the circumference of Earth constituted a circle of 360 degrees, so 7.12 (or 7.2, to divide 360 evenly by 50) degrees would be about one-fiftieth of the circumference. He also knew the approximate distance between Alexandria and Syene, so he could set up this

There are countless aerial views of cities, mountains, ect. All of these create a sense of----

It was to be that educated Europeans already believed that the world was round even before Columbus made the statement that the world was round. It was the Idea that the Greeks in the 5th century BC already came up with the myth that the world was round. Most believed that the world was flat and you could sail right off the earth. These people thought this because the maps that they used to navigate where a world that was flat and this is why they thought this. But studies identified the world as in a sphere but no christopher columbus was not the first to have estimated that the world is a

The only thing known to be as perfectly round as the sun is a man-made silicone ball.

Ancient cultures did not believe the Earth to be the spherical object we know Earth to be

Galileo devised his own telescope, in which he observed the moon and found Venus had phases like the moon, proving it rotated around the sun.

Before Newton talked about gravitation the main knowledge of scientists was a elementary knowledge of optics, mechanics and astronomy.Copernicus Kepler and Galileo provided the background knowledge of the stars and planets, but Newton used their data to discover the whole gravitational system.10Newton reasoned that the planets and all other physical objects in the universe moved through mutual attraction of gravity.Newton said that every other object in the universe affected every other object through gravity.This explained why the planets move in an orderly fashion. Newton found that “the force of gravity towards the whole planet did arise from and was compounded of the forces of gravity towards all it’s parts, and towards every one part was in the inverse proportion of the squares of the distances from this part.”Newton proves all of this mathematically. This was known to be the single most important contribution to physics that ever has been made.11

In 1543 Nicholas Copernicus, a Polish Canon, published “On the Revolution of the Celestial Orbs”. The popular view is that Copernicus discovered that the earth revolves

Many Scientists knew the Earth was round centuries before humans took the journey into space. The Greek astronomer, Eratosthenes in 200 B.C was aware that at noon on the first day of summer, the sun in one city in Egypt passed directly overhead. However, on the same day in another city in Egypt, vertical objects cast a shadow of seven degrees. If the Earth were flat, this observation would’ve been hard to understand. But if the Earth were round, Eratosthenes reasoned, you could use this information to figure out the Earth’s circumference. [16] Another way in which science knows the Earth is flat was when Christopher Columbus sailed to North America in 1492. Columbus thought the Earth was round and gave proof that when

The Heliocentric theory was developed once Copernicu realized that the Geocentric theory had defied certain ancient views, as well as realizing that it was far to complicated for his taste. Once conducting his research he had discovered that the earth was not at all in the center of the universe, “The eyes are witness that the heaven revolve in the space of twenty-four hours. But certain men, either from the love of novelty, or to make a display of ingenuity, have conclude that the earth moves and they maintain that neither the eighth sphere [of the fixed stars] nor the sun revolves...”. It was then discovered that the earth was not in the center and in its place was the sun, with it following Mercury, Venus, Earth; with the moon, Mars, Jupiter, Saturn. In contradiction, of Ptolemy's Geocentric system which consisted of the earth in the center, followed by the Moon, Mercury, Venus, Sun, Mars, Jupiter, Saturn, Firmament, Crystalline Sphere, Prime mover and Empyrean Heaven. Nonetheless, these finding were discovered, and put into Copernicus book, On the Revolution of the Heavenly Spheres, they were not out until before his death. With the fear of being embarrassed by other astronomers Copernicus book was not published until May 1543, before his death. After the people got a taste of these findings many questions had risen such as