Creditors to Space Rocketry essays

Creditors to Space Rocketry essays Konstantin Eduardovitch Tsiolkovsky was born in September, 1857 in the town of Izhevskoye, Spassk District, Ryazan Gubernia. On the merits of some of his early research and related writings, Tsiolkovsky was elected to the Society of Physics and Chemistry at St. Petersburg, Russia. On March 28, 1883 Tsiolkovsky demonstrated the reaction principle through experimenting with opening a cask filled with compressed gas. He discovered that movement of the cask could be regulated by alternating the pressure of the gas released from it. Tsiolkovsky completed a draft of his first design of a reaction thrust motor on August 25, 1898. The following year, he received a grant of 470 rubles from the Academy of Science's Physics and Mathematics Department to engage in research. This work was dedicated to the establishment of scientific principles, so no actual motors were developed. In 1903, his first article on rocketry appeared in the "Naootchnoye Obozreniye" (Scientific Review). The article was entitled "Issledovanie Mirovykh Prostransty Reaktivnymi Priborami" (Exploration Of Space With Rocket Devices). In the article, Tsiolkovsky clearly outlined in scientific terms exactly how a reaction thrust motor could demonstrate Newton's Third Law to allow men to escape the bounds of Earth. Also in 1903, Tsiolkovsky drafted the design of his first rocket. It was to be powered by a combination of liquid oxygen and liquid hydrogen, which would create an explosive mixture at the narrow end of a tube. Burning of the fuels would produce condensed and heated gases. The gases would then be quickly cooled and rarefied at the wider end of the tube, located at the tail of the rocket. The resulting exhaust, escaping from a nozzle, would provide lift-off thrust at a relatively high velocity. This design was indeed prophetic, especially when consideration is given to the fact that liquid oxygen and liquid hydrogen have traditionally be...

Ponce de Leon and the Fountain of Youth

Ponce de Leon and the Fountain of Youth Juan Ponce de Leà ³n (1474-1521) was a Spanish explorer and conquistador. He was one of the first settlers of Puerto Rico and was the first Spaniard to (officially) visit Florida. Hes best remembered, however, for his search for the legendary Fountain of Youth. Did he really search for it, and if so, did he find it? The Fountain of Youth and other Myths During the Age of Discovery, many men got caught up in the search for legendary places. Christopher Columbus was one: he claimed to have found the Garden of Eden on his Third Voyage. Other men spent years in the Amazon jungle searching for the lost city of El Dorado, the Golden Man. Still others searched for giants, the land of the Amazons and the fabled Kingdom of Prester John. These myths were very pervasive and in the excitement of the discovery and exploration of the New World it did not seem impossible to Ponce De Leons contemporaries to find such places. Juan Ponce de Leà ³n Juan Ponce de Leà ³n was born in Spain in 1474 but came to the New World no later than 1502. By 1504 he was well-known as a skilled soldier and had seen much action fighting the natives of Hispaniola. He was given some prime land and soon became a wealthy planter and rancher. Meanwhile, he was surreptitiously exploring the nearby island of Puerto Rico (then known as San Juan Bautista). He was granted rights to settle the island and he did so, but later lost the island to Diego Columbus (son of Christopher) following a legal ruling in Spain. Ponce de Leon and Florida Ponce de Leà ³n knew he had to start over, and followed rumors of a rich land to the northwest of Puerto Rico. He took his first trip to Florida in 1513. It was on that trip that the land was named Florida by Ponce himself, because of the flowers there and the fact that it was near Easter time when he and his shipmates first saw it. Ponce de Leà ³n was awarded the rights to settle Florida. He returned in 1521 with a group of settlers, but they were driven off by angry natives and Ponce de Leà ³n was wounded by a poisoned arrow. He died shortly thereafter. Ponce de Leon and the Fountain of Youth Any records that Ponce de Leà ³n kept of his two voyages have been long since lost to history. The best information concerning his journeys comes to us from the writings of Antonio de Herrera y Tordesillas, who was appointed Chief Historian of the Indies in 1596, decades after Ponce de Leons journeys. Herreras information was likely third-hand at best. He mentions the Fountain of Youth in reference to Ponces first voyage to Florida in 1513. Heres what Herrera had to say about Ponce de Leà ³n and the Fountain of Youth: Juan Ponce overhauled his ships, and although it seemed to him that he had worked hard he decided to send out a ship to identify the Isla de Bimini even though he did not want to, for he wanted to do that himself. He had an account of the wealth of this island (Bimini) and especially that singular Fountain that the Indians spoke of, that turned men from old men into boys. He had not been able to find it because of the shoals and currents and contrary weather. He sent, then, Juan Pà ©rez de Ortubia as captain of the ship and Antà ³n de Alaminos as pilot. They took two Indians to guide them over the shoals†¦The other ship (that had been left to search for Bimini and the Fountain) arrived and reported that Bimini (most likely Andros Island) had been found, but not the Fountain.    Ponces Search for the Fountain of Youth If Herreras account is to be believed, then Ponce spared a handful of men to search for the island of Bimini and to look around for the fabled fountain while they were at it. Legends of a magical fountain that could restore youth had been around for centuries and Ponce de Leà ³n had no doubt heard them. Perhaps he heard rumors of such a place in Florida, which would not be surprising: there are dozens of thermal springs and hundreds of lakes and ponds there. But was he actually searching for it? Its unlikely. Ponce de Leà ³n was a hardworking, practical man who intended to find his fortune in Florida, but not by finding some magical spring. On no occasion did Ponce de Leon personally set off through the swamps and forests of Florida deliberately seeking the Fountain of Youth. Still, the notion of a Spanish explorer and conquistador seeking a legendary fountain captured the public imagination, and the name Ponce de Leon will forever be tied to the Fountain of Youth and Florida. To this day, Florida spas, hot springs and even plastic surgeons associate themselves with the Fountain of Youth. Source Fuson, Robert H. Juan Ponce de Leon and the Spanish Discovery of Puerto Rico and Florida Blacksburg: McDonald and Woodward, 2000.