Thursday, November 28, 2019
Charles Goodyear Essays - Rubber, U.S. Synthetic Rubber Program
Charles Goodyear Charles Goodyear was born in New Haven, Connecticut on December 29, 1800 to Amasa and Cynthia Goodyear. Charles's father was a hardware manufacture and a merchant. Amasa Goodyear built mainly farming tools like hayforks and scythes, which he invented. When Charles was a teenager he wanted to go into the ministry and become a pastor, but his father convinced him that he was a good business man and placed him in the hardware store of the Rogers brothers in Philadelphia at the age of seventeen. He worked there until he was twenty-one years old. At that time he returned to New Haven to join his father's business, making farm tools. For five years he worked for his father, building up the family business. On August 24, 1824, while he was still working for his father he married Clarissa Beecher who also lived in New Haven, Connecticut. In 1826 Charles Goodyear decided to move to Philadelphia, Pennsylvania. There he opened a hardware store where he sold the products that his father made. Four years after opening this store both Amasa and Charles Goodyear were bankrupt because they would extend credit to customers and the customers would never pay back the money that they owed. Charles's health started to decline and both father and son owed tens of thousands of dollars. For the next thirty years Charles Goodyear was thrown in prison over ten times because he didn't pay his debts. In 1834 when he was in New York, on a business trip, the Roxbury India Rubber Company caught his eye. He decided to go inside the store and take a look around. While he was in the store he saw an India rubber valve on one of the products in the store. He thought that a better valve on a product of his father's might help them pay off some of their debt. He decided to make a better valve with Indian rubber. A few days later he showed it to the manager of the Roxbury India Rubber Company, who was very impressed with valve, but the manager didn't encourage it because he was afraid that Goodyear might come up with a better type of rubber that didn't melt and get sticky in the summer like India rubber did. Getting a boost of confidence when he went back to Philadelphia, he decided to start experimenting with India rubber. He did his first testing in jail, because immediately upo n his return he was put in jail for another debt. The India rubber market was beginning to fail because the rubber would melt in the summer heat, therefore it would cost him almost nothing to buy the rubber. His first try in making rubber better, he combined gum elastic with the India rubber, but when summer came his rubber reacted in the same as the India rubber. The year of 1836 Charles Goodyear had no encouraging results. With the things that he did make out of India rubber (which were failures to making a better type of rubber) they were sold to pawn shops to produce some income. Friends and family would give him money so that he could keep his rubber research going. In 1837 Goodyear devised a process in which he coated the India rubber with metal and acid (this is only part of the vulcanization process). On June 17, 1837 he got patent No. 240. In 1837 he moved to Roxbury, Massachusetts, where the India rubber business was started. The India rubber business had rebounded, but only selling limited products. There he met E.M. Chaffee, who invented India rubber and John Haskins, one of the factory managers. They saw some of his work and allowed him to rent a small portion of the factory and use their machinery. There in the winter of 1837-38 he sold shoes, piano covers, and tablecloths utilizing his new process. In winter of 1838 he met a man named Nathaniel M. Hayward who was about to patent his discovery in which he put sulfur on rubber to eliminate the stickiness of the rubber. Goodyear hired Hayward to go more in depth with the experiment using sulfur with India rubber. Jointly they discovered that if they
Sunday, November 24, 2019
Size, Facts, and Figures of the Alamosaurus
Size, Facts, and Figures of the Alamosaurus Although there may be other genera whose fossils have yet to be discovered, Alamosaurus (Greek for Alamo lizard and pronounced AL-ah-moe-SORE-us) is one of the few titanosaurs known to have lived in the late Cretaceous (70-65 million years ago) in North America, and possibly in vast numbers: According to one analysis, there may have been as many as 350,000 of these 60-foot-long herbivores living in Texas at any given time. Its closest relative appears to have been another titanosaur, Saltasaurus. Bigger Than We Thought A recent analysis has shown that Alamosaurus may have been a bigger dinosaur than originally estimated, possibly in the weight class of its more famous South American cousin Argentinosaurus. It turns out that some of the type fossils used to reconstruct Alamosaurus may have come from adolescents rather than full-grown adults, meaning that this titanosaur may well have attained lengths of over 60 feet from head to tail and weights in excess of 70 or 80 tons. The Origin of the Name By the way, its an odd fact that Alamosaurus wasnt named after the Alamo in Texas, but the Ojo Alamo sandstone formation in New Mexico. This herbivore already had its name when numerous (but incomplete) fossils were discovered in the Lone Star State, so you might say that everything worked out in the end!
Thursday, November 21, 2019
T & M wk5 Essay Example | Topics and Well Written Essays - 7250 words
T & M wk5 - Essay Example Many of these children that I have seen are actually gifted, but they do not have a way to express their way of learning. Sometimes these placement tests are accurate but other times they are not. Part of our job is to discern what learning disabilities a child has and look for ways to assist them. An ethical issue is that sometimes we are asked to do testing that no one is qualified to do. We do send children out to be tested in these cases but it is difficult when other agencies expect that we can do everything. The role of testing and assessment in small business is important because it is important that all people within a business understand how to work together. It is also important for individuals to take charge of their careers inside a company so that when openings happen they are able to take advantage of them. One of the tests that I would use in business would be the Values Scale. This test gives an understanding of 21 values that are relevant to work and an individuals life roles. I would use this instrument to help the employee understand their own values and to help the employer understand how this individuals values may fit into the organization. I would ask that employees take this test within the first year of their employment in order to help them understand how to shape their values with those of the company. The second test that I would use is the Myers Briggs Type Indicator. I would use this to start a dialogue between employees to help them understand each other better. This is very good with management but it would also be used with other employees. T One challenge to testing and assessment in business is the fact that testing of any kind is controversial because the perception of testing is that it is used to keep certain types of people out of an
Subscribe to:
Posts (Atom)