Archimedes Aarish Shahab Archimedes’ Life
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Archimedes Aarish Shahab Archimedes' life Much of what we know about Archimedes is minuscule when compared to the amount we do not know. Living in the times of the Ancient Greeks, Archimedes was born in Syracuse, Sicily in 287 B.C. His father, Phidias was a man of great wealth during this era and self-proclaimed astronomer. He devoted his wealth and experience to ensure that his son received the most superior education of the time. Archimedes indeed grew up watching his father use calculations in order to explain the phenomena of the world, and used it as inspiration to become a mathematician and philosopher; however, much is unknown regarding the details of Phidias and the rest of Archimedes' relatives. In fact, the concrete information we do know are only revealed in one of Archimedes' works: The Sandreckoner. Archimedes' friend, Her- acleides, once wrote a biography of him, however, it has truly been lost in history. Much of Archimedes' inventions are told by the perspective of men like Plutarch and Livy, as they reveal the context in which he created each of these inventions, such as during times of warfare. That being said, we glean clues of Archimedes' life from the context of his environment. For instance, some proponents argue that Archimedes' wealth was due to his relations with the King of Syracuse at the time, King Hiero II. This explains why Archimedes was granted the resources and luxury to explore mathematics to its very core, and reveal inventions that are still regarded as truly spectacular. Syracuse, Sicily was a bustling city full of commerce, art, and science while Archimedes was growing up; however, its bustling economy was one of the primary reasons why other nations attacked it, wishing to claim its riches. King Hiero II spearheaded the revolt against the Mamertines, send- ing Archimedes away to Alexandria, Egypt to further his studies. At the time, Alexandria had already earned a reputation for great learning and scholarship, a beautiful complement to Archimedes' evident natural curios- ity and creative problem solving. Archimedes was extremely keen to travel to Alexandria due to his fascination with one of the most renowned mathematicians of the time, Euclid. This well-known scholar was credited for compiling a book that catalogued all existing Greek geometrical treatises - a framework that forever changed the study of geometry and influenced Archimedes' later works. Archimedes thus happily traveled to Alexandria to study under the very teachers who tutored Euclid, hoping to leave an impact just as great, if not greater than Euclid himself. In Alexandria, Archimedes corresponded with other scholars such as Conon of Samos and Eratosthenes of Cyrene. It is with these principal mathemati- cians of the time that he published many of his works. Archimedes, equipped with newfound knowledge and intuition regarding how the world worked, travelled back to Syracuse, Sicily even though his hometown was being ravaged by warfare. It is there where he aided in the war effort, defending Syracuse against the Roman Siege of 213 BC, and invented ingenious solutions to the King's various problems. Indeed, Archimedes proved himself to be not only Sicily's, but also human- ity's greatest asset in the growth of mathematics. 2 Archimedes' mathematical works Archimedes' brilliance cannot be contained to just his era, as his inventions are still being used thousands of years later. For instance, one of Archimedes' most famous moments was where he coined the comical phrase 'Eureka!' In this account, King Henry II had told his goldsmith that he required a new royal crown made of solid gold. The pure amount of gold in one setting tempted the goldsmith to cunningly steal some of it. He only used a small portion of the gold while making the crown and mixed it with enough silver in order to make it seem like the weight was the same as if it was all 100 percent gold. However, King Hiero II suspected that something was wrong with his crown and ordered Archimedes to intuitively discover a method to test his theory without damaging the crown in any way. Archimedes remained stumped on this issue, until one day he decided to take a bubble bath. As he settled himself in the bath, he noticed that some of the water fell off the sides of the tub. Suddenly, he realized that he could measure the crown's volume by measuring the amount of water that was displaced. With the volume in mind, all he had to do was find the weight of the crown and divide it by its volume in order to determine the crown's unique density. If the density (a measure of the purity of the crown) was found to be different than pure gold, then the goldsmith would be held accountable. In this moment of celebrated discovery, Archimedes shouted 'Eureka!' and journeyed across the streets of Syracuse to inform the king. Today, this method is called 'Water Displacement' and is a useful tool for mathematicians and chemists who need to measure using indirect methods. For practical purposes, water is incompressible, so Archimedes' assumption was that the crown submerged would displace the same amount of water as its volume. However, this story is not present in Archimedes' works. In fact, the measurements regarding this Water Displacement method would have to be done very precisely in that even a small error would lead to an incorrect density and therefore a blame on an innocent goldsmith. It is thus proposed that Archimedes may have used a different analysis to prove that the goldsmith was cunning: The Archimedes Principle. This theory involved the use of hydrostatics and is further explained in his work 'On Floating Bodies.' This principle states that a body immersed in fluid 3 is subject to a buoyant force that is equal to the weight of the fluid that is displaced. This law could then be tested via the use of an apparatus that consisted of balancing the crown on a scale with the gold reference sample and placing this apparatus in water. If the crown was truly made of pure gold, then the scale would remain suspended equally, meaning that the wreath and gold would have the same volume and thus the same density. However, if the scale instead tips in favor of the side with gold, than the crown has a greater volume, a lower density, and is not pure. This Buoyancy Law, though needing much more materials than regular Wa- ter Displacement, is indeed more accurate and therefore is more likely to have been used by Archimedes. F is the buoyant force p is the density of displaced fluid V is the volume of displaced fluid g is the acceleration due to gravity g = 9:8 in meters per second squared F = p × g Note: The density and volume in this equation is referencing the displaced fluid and not the object that is submerged. For instance, if an object was submerged in water and displaces 1L of water, where 1 kg/l is the density, then the equation can be used to determine the buoyant force on the object since both the volume and density of the displaced fluid are known. Plugging this in: F = 1 × 1 × 9:8 Thus, if the weight of the object is more than 9.8N, then the object will 4 sink. If it is less than 9.8N, then the object will float. But if the weight is exactly 9.8N, then the object will neither sink nor float. Another story regarding King Hiero II and Alexander detailed a problem with one of Hiero II's ship designs. Although the ship design of the Greeks was superior, rainfall posed a clear and burdensome obstacle, as the rain- water would fill the hull of the ship. In order to emerge victorious in naval battle, Hiero called upon Archimedes to remedy the situation with another act of genius. Archimedes went on to create a machine consisting of a hollow tube with a spiral that could easily be turned at one end. When it was set into the hull, the turning motion carried water up the tube out of the hull, and forever revolutionized the economy. Today, this ingenious invention is called 'The Archimedes Screw' and is a widely used irrigation technique in developing countries. Another invention by Archimedes created in order to defend Syracuse was 'The Claw of Archimedes.'The weapon consisted of a grappling hook at the end of a long crane that would rip into nearby ships. The upward 'swing' motion would lift the ship upwards and damage it, if not sink it. The realism of this device has been called into question, and only in 2005 was it declared that it truly functioned. Another one of Archimedes' widely debated inventions was his 'Archimedes Heat Ray.' It is said that Archimedes used heat reflected from mirrors to burn ships attacking Syracuse. This device used the principle of a parabolic reflector, similar to the dynamics of a solar furnace. However, in 2005 stu- dents from MIT replicated this finding and determined that if certain con- ditions are met, the ship's wood could indeed reach its melting point of 300 degrees Celsius, thus technically setting the ship on fire. Archimedes other works were more varied. While he was theorizing about levers, he exclaimed 'give me a place to stand on, and I will move the Earth.'He used combinations of levers, block-and-tackle pulleys, catapults, and odometers to aid Syracuse during the First Punic War. By all defini- tions, Archimedes was indeed a soldier of Syracuse and an essential asset to its military.