While the well being at a spot where the shadow was negligible was convenient, he could have used two sticks a known north/south distance apart (east/west wouldn't have been useful) and used the change in angle in place of the 7.12 degrees mentioned in the article to find the circumference. Eratosthenes only surviving work is Catasterisms, a book about the constellations, which gives a description and story for each constellation, as well as a count of the number of stars contained in it, but the attribution of this work has been doubted by some scholars. He calculated the value of the infinite number known as pi C. He computed the circumference of planet earth D. He developed military tactics that still apply today 2 See answers Advertisement Fonsor The breadth of his interest was huge and his. at the Battle of Marathon. His conversion meant that Christians would no longer be persecuted. He calculated the value of the infinite number known as pi. strong, fiery emotions. Constantine Roman officials, to win their approval. Eratosthenes was afflicted by blindness in his old age, and he is said to have committed suicide by voluntary starvation. What was their main role? Which ruler divided Rome in order to bring stability to the empire? Which best describes the Spartan government? Athens placed the greatest emphasis on He didn't have to exchange information. consuls. Earth circumference sieve of Eratosthenes Eratosthenes, in full Eratosthenes of Cyrene, (born c. 276 bce, Cyrene, Libyadied c. 194 bce, Alexandria, Egypt), Greek scientific writer, astronomer, and poet, who made the first measurement of the size of Earth for which any details are known. He made this estimation from the time it took walkers, who were trained to measure distances by taking regular strides, to trek between the cities. He sacrificed his life to spread Christianity. By solving the equation, he calculateda circumference of 250,000 stadia, or 25,000 miles (40,000 kilometers). In Europe, the foreign invaders were primarily Germanic tribes and Huns. unclear. Greeks. The Socratic method used questions to find the truth. wrote a geometry textbook that was used for nearly 2,000 years. He died rather than deny his beliefs. developed military tactics that still apply today. So.does that mean that..if the well had not been located exactly where it was that he would not have been able to calculate the circumference? English, Indian, and Persian influences. Which of the following traits of Athena are responsible for her status as the patron goddess of Athens? He has new purchases of $38.50,$65.74, and $125.61. Who forced the emperor from power? Remarkably, Eratosthenes determined the circumference to be 25,000 miles, just 99 miles over the actual circumference at the equator (24,901 miles). could hold an office if they were chosen by lot. What was one contribution made by Eratosthenes in ancient Greece? The Hellenistic Age was characterized by. Roman religion was adapted from the Trade opportunities went down, and the middle class rose significantly. It helped Christianity emerge as a separate faith. Athens and Sparta were unbeatable when the two were united. The concept of the spherical earth was gradually accepted during the Middle Ages (before the Renaissance) - at least among the more educated members of the population. He is also known for his directive on codes of professional ethics which physicians today recognize as the "Hippocratic Oath.". Modern architects have adopted Roman techniques. Eratosthenes' method of measuring Earth's circumference, This article was most recently revised and updated by, https://www.britannica.com/biography/Eratosthenes, Famous Scientists - Biography of Eratosthenes, Ancient History Encyclopedia - Biography of Eratosthenes, Eratosthenes - Student Encyclopedia (Ages 11 and up). Quickly and professionally. Eratosthenes measured Earths circumference mathematically using two surface points to make the calculation. The number of paid officials increased, which was beneficial to the lower class citizens who served in office. What was one consequence of Roman expansion beginning in 300 BCE, The Roman Republic began to expand when Rome fought the Punic Wars and defeated, With Caesar Augustuss rise to power, Rome, Rome was strongly influenced by the culture of the, A peninsula is a piece of land that is surrounded by. The Athenians conquered the Persians and overthrew King Darius I. He also created an improved star chart that included all 1,027 stars visible from Alexandria at night with respect to latitude and longitude so it could be used by sailors or travelers on land or sea who needed directions at night. How did the Romans bring fresh water to their cities? What became of the Eastern Roman Empire after the collapse of the Western Roman Empire? He calculated the value of the infinite number known as pi. at } \$ 17.50 & 1,330 \mathrm{hrs} \text {. During the height of Muslim power, inventions included. i. all, especially the poor and weak Greeks. :Variablecost,$3.10Fixedcost,$4.90ActualCosts70,600lbs. Biography of Eratosthenes, Greek Mathematician and Geographer. What was one cultural contribution made by the ancient Greeks? was the ocean that completely surrounded it. On the asset side, the entries under securities and loans remained unchanged. Pharapreising and interpretation due to major educational standards released by a particular educational institution as well as tailored to your educational institution if different; i. Who led the Athenian Empire? ThoughtCo. He developed military tactics that still apply today. withdraw from the surrounding territories. Admirers of the Greek thinker called him Pentathlos, after the Greek athletes known for their prowess in a number of different events. Pericles wealth and power. 1,000 BCE. He already knew that the sun would shine straight down the well at noon on the summer solstice in Syene. Alexander the Great became king of Macedonia, after Philips assassination at the hands of political rivals. the death of Alexander the Great. Registered address: Louki Akrita, 23 Bellapais Court, Flat/Office 46 1100, Nicosia, Cyprus Let us have a look at your work and suggest how to improve it! Rome was strongly influenced by the culture of the In On the Circular Motions of the Celestial Bodies, [11] Cleomedes credited him with having calculated the Earth's circumference around 240 BC, with a high precision. An Athenian education focused on preparation for the military. The new coins lost value because of inflation. Why was Constantine's conversion to Christianity significant? He computed the circumference of planet Earth. This method, still in use today, is called the "Sieve of Eratosthenes." In Alexandria, also in Egypt, at the same date and time, sunlight fell at an angle of about 7.2 from the vertical. by traveling to speak to people across the Roman Empire. If Ptolemy had used Eratostheness larger, more accurate figure for Earths circumference, Columbus might never have sailed west. Senators are elected into office for life. The official religion of the Roman Empire was a form of paganism in which worshippers prayed to Roman gods and the emperor. They were constructed to move the Roman military. Which belief in particular made others suspicious of Christians? she was the leader of the gods. What long-term economic factors led to the collapse of the Roman Empire? He computed the circumference of planet Earth. inner peace. He is said to have drawn the first known map of the world, including meridians and parallels, for which he is considered as the inventor of geography. Direct link to TicciToby #PamalaWeek's post Did he have a wife or kid, Posted 4 years ago. Eratosthenes was one of the greatest Greek polymaths, and his work influenced later innovators in fields ranging from mathematics to geography. The teachings of Jesus could be best described as a focus on acceptance and love for following the laws created by rulers and other leaders. executing enemies who spoke against the empire. mild. Those are equatorial measurements. Constantine divided the empire into western and eastern halves, while Diocletian further split the country into four regions. Why was Constantines conversion to Christianity significant? The Peloponnesian War began. If you measure the circumference in the direction Eratosthenes did, which is north to south, the distance is less due to the Earth not being a perfect sphere, bulging at the equator. Eratosthenes may have been the first to use the word. Who wrote The Republic in ancient Greece? (Syene was located very close to what we call the Tropic of Cancer, 23.5 degrees north, the northernmost latitude at which the Sun is ever directly overhead at noon.). 30 BCE. Which characteristic of government describes Athens, not Sparta? The Hellenistic Age began in Greece with. Suppose you observe a rise of $100 million in reserves on the liability side of the central banks balance sheet with all other liabilities remaining unchanged. Home Flashcards Early Civilizations- WH. Christianity has buildings for worship. One way Diocletian brought short-term order to Rome involved Who was the first Christian Roman emperor? Why did Romans create a written code of law? 300 BCE. ii. Early Christians were persecuted for their beliefs. People began to feel that government service was a burden. Eratosthenes could measure the angle of the Suns 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). He wrote a geometry textbook that was used for nearly 2,000 years. Omissions? The leader of the Athenian Empire worked to stock of weapons began to run out. a soldier in the military. The Pax Romana ended in 180 CE after over one hundred fifty years in existence. The end of this era ushered in a period of their acceptance of Judaism. They built dams across the Tiber. Most of Eratostheness writings have been lost, but other scholars reported his work and findings which were extensive. give citizens direct input into the government. Taxes went up, and the gap between the rich and poor increased. As we now know, this was a critical error on Columbus' part. was the tropical weather that helped plants grow. she was a goddess of war. Rome was no longer a center of trade. Alexander conquered most of the Mediterranean region, including parts of Africa, and advanced into Southern Asia. ), a mathematician, is known for his mathematical calculations and geometry. Macedonia to the Persian Gulf. He is best known for calculating the circumference of Earth using simple geometry and observational data. Eratosthenes was a Greek mathematician, geographer, and astronomer who made many contributions to science. Pontius Pilate classical era. Delian League. Alexander the Great became king of Macedonia, after Philip's assassination at the hands of political rivals. He was one of those ancient Greeks who changed the world. On which river was Rome located? They resented not having a say in the government. He noted that the Suns rays fell vertically at noon in Syene (now Aswn), Egypt, at the summer solstice. He was given the first Christian burial. The ancient Greeks gave many contributions to the western civilization. Demand averages 1,500 units per week. 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what was one contribution made by eratosthenes in ancient greece?