Eratosthenes Research Paper

Later generations told many anecdotes about this man, who was reckoned among the seven sages, but it is difficult to verify the reliability of these stories. He may have traveled to Egypt, where many Greeks and Carian’s were welcome as merchants and mercenaries, but on the other hand, it was expected that a wise man made a long voyage to gain knowledge, and this story may have been invented to prove that the sage of Miletus was a wise man indeed. (Similar stories are told about Solon and Pythagoras.) It is not even certain whether Thales is the author of published texts. The three titles that are attributed to him may be later inventions, or three names of one and the same poem: Nautical astronomy, on the solstice, and on the equinox. What seems certain, however, is that Thales predicted the solar eclipse of 28 May 585, which was remembered (according to the Greek researcher Herodotus of Halicarnassus note) because the Lydian king Alyattes and the Median leader Cyaxares were fighting a battle on that day. However, it must be noted that "predicting" merely meant that Thales announced that it was possible that an eclipse could take place during a particular new moon, because by then, not even Babylonian astronomers were able to predict this impressive phenomenon more accurately. Still, even establishing a possibility was a great leap forward for Greek science. According to a famous story told by Herodotus of Halicarnassus, in c.547 BCE, Thales also changed the course of the river Hales in order to facilitate the crossing of an army of the Lydian king Croesus. Note if this story is true, Thales must have died after this year. Another, perhaps more reliable bit of information is that Thales did geometrical research, which enabled him to measure the seize of the pyramids of Egypt or the distance to a ship at sea. He also proved that a circle is bisected by its diameter, that the angles of the base of an isosceles

During the first millennium B.C. scientists realized that astronomy had to become more scientific. Middle Eastern and Chinese cultures started studying the Sun, stars and the planets more closely in an attempt to learn more about our position in the universe.. Star positions also became important tools in understanding directions, and helping with navigation. One philosopher stated in 434 B.C. that the Sun was a ball of fire 60 kilometres in diameter, hovering 6500 kilometres above Earth’s surface. Around 130 B.C., Ptolemy wrote Almagest, which was a huge collection of astronomical data which included mathematical models, information about eclipses, and planetary and stellar positions and movements. It remained a major go to book for astronomy for hundreds of years, and was not seriously challenged until Copernicus disputed the geocentric model of the solar system in the 1500’s

(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

The count of Nouâtre, a town north of Noyers , called Radulfus had an agreement with Boso de Chillo that when the end should come for viscount Henry, that the count would give Henry’s land to Boso, as a count was known to do for vassals that pleased him. Without his knowledge though, Henry had promised the land in secret to Aimericus, a vassal of Count Matheus.

Many current day medical practices can be traced back to the core concepts of four Roman physicians. Although the Romans were less sophisticated, they discovered and formulated several techniques that are still being used today such as neurostimulation, the cleansing of wounds, the workings of arteries and veins, and pregnancy/childbirth. Roman medicine was primarily influenced by the works of Aulus Cornelius Celsus, Scribonius Largus, Galen of Pergamon, and Soranus of Ephesus.

Samuel Seium. Ruth’s occupational journey through the eyes of the Super’s life span, life-space theory started at the growth stage. In this stage, Ruth would go to work with her father after school and watch him conduct his business and the type of work and commitment it took to keep it running properly. Instead of fantasizing about being a doctor to a lawyer she wanted to be a businessman like her father. In the exploration stage, Ruth came to America to study business and go back to Eritrea to run her father’s business when he gets older. Not being able to have a work permit delayed her for three years to explore odd jobs and see what she liked. At the age of twenty-two, she took a job at the airport because she needed the money to continue

Archimedes was born in 287 BC in Syracuse, Greece. He was a mathematician, physicist, weapons designer, astronomer, inventor, and engineer. Do to lost information; Archimedes' life does not have concrete details. He might have had kids or got married. It is known that he focused on mathematics and science. His discoveries and inventions certainly act as evidence to this.

Eratosthenes he was born in 276 BC and he was in Cyrene. Cyrene had been founded by the Greeks centuries earlier and became the capital of Pentapolis North Africa a country of five cities. The Eratosthenes get death in 323 BC. The Eratosthenes did went to Athens to for his studies and he did school of philosophy. Eratosthenes was a man of many perspectives and investigated the art of poetry under Callimachus. He did wrote poems one in hexameters called Hermes illustrating the god's life history and another in elegiacs, called Erigone, describing the suicide of the Athenian maiden Erigone (daughter of Icarius). Eratosthenes calculated the circumference of the Earth without leaving Egypt. He knew this because he had been told that the shadow

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

Galileo Galilei is a famous astronomer and mathematician and was born in 1564 and lived to 1642 when he sadly past. He was born in Pisa, Republic of Florence (now in Italy) and was the first of the seven children of his parents. It was at Padua which he started his life's work on the study of motion and astronomy which brought him fame and controversy on his studies.

Galileo Galilei was a male Italian astronomer, philosopher, mathematician and physicist. He thought of good changes to help people.

This recipe, like many of those found in The Book of Apicius, is vague because it does not describe in detail how this dish is prepared, nor does it give exact quantities of the ingredients used, therefore it is open to interpretation. The notes that accompany this recipe state that it may be a type of oysters stew and after doing some research I agree with this assumption. I learned that soups and stews are made by thickening a seasoned liquid and cooking meat, vegetables, or grains in said liquid. In this recipe, egg yolk would be the thickening agent that turns the wine, vinegar, broth, and other ingredients into a stew. From the Book of Apicius and my research I also learned that the ancient Romans made numerous types of stews and soups

The question “What is the circumference of the Earth?” usually pops up in everyone's mind at least once throughout their lives. And we have not always known the circumference of the earth it was actually a mystery at one point in time. It had rattles the minds of mathematicians and scholars around the world since 240 BC. And it only took one man named Eratosthenes to enlighten the world and share his knowledge of his finding of the circumference of Earth. He had ignited the spark that led other to know the actual circumference of the Earth today. So, who is this Eratosthenes and how did he do such a thing without modern technology? Eratosthenes lived in Alexandria and he observed once a year which was actually the Summer Solstice that there was

Pythagoras was an Ionian Greek philosopher, mathematician, and putative founder of the Pythagoreanism movement. He was born in Samos, Greece and died in Metapontum. His parents were Mnesarchus and Pythais. Some say that Pythagoras had three daughters and one son. Others say he never got married and had children. He is referred to as the first pure mathematician. He was a well educated man and was interested in mathematics, philosophy, astronomy, and music. It is said that he was influenced by Pherekydes (philosophy), Thales (mathematics and astronomy) and Anaximander (philosophy, geometry). They don’t know very much about his mathematical achievements. They don’t have any of his writing’s like they do other philosophers.

Euclid Of Alexandria may be the best-known mathematician of the world, he is best known for his work on mathematics The Elements. The fact that his work has survived so long, 2000 years in fact, is a tribute to his mathematical genius, however very little of him is known. Three theories abound as to the true nature of this historical figure. Not all historians agree that Euclid was in fact a historical figure, some argue that the school in Alexandria took up the name Euclid to publish their works. But the more accepted theories are that Euclid was in fact a real historical figure who may have been the leader of a team of mathematicians.