Thomas Edison Essays (725 words) - Thomas Edison,

Thomas Edison Edison was born in the village of Milan, Ohio, on Feb. 11, 1847, and his family later moved to Port Huron, Mich. In his early life as a kid he played jokes on people and got into trouble. One time he set his father's barn on fire because he wanted to see what fire look like when it burned. His schooling was three months long because he quit when too many people made fun of him. At the age of seven his mother taught him, and he loved to read books. The book Schoool of Natural Philosophy sparked his likeing for science and, soon after he set up his first lab. At age 12 his father could no longer buy supplies for his lab so he became a train-boy, selling magazines and food on the Grand Trunk Railroad. He spent all he earned on books and supplies for his laboratory.At this time he stoped sleeping and only took cat-naps so he could work on experiments at night in the bagage car. An accident at this time led to a loss of hearing about 50%. Two things which contributed to loss of his hearing was a conductor pulling on his ear and, a conductor clapping his ears for setting the bagage car on fire it was only an accident. Soon after he left this job. A station agent taught him telegraph code and procedures, and at age 15, Edison became manager of a telegraph office. His first inventions were the transmitter and receiver for the automatic telegraph. At 21, Edison made improvements on the stock ticker for printing stock-exchange quotations. With the $40,000 he was paid for the improvements in tickers, he established real laboratory in Newark, N.J. Deciding to give up manufacturing, he moved the laboratory to Menlo Park, N.J., where he was in charge of groups of employees working on various projects. In 1878, Edison started work on an electric lamp and looked for things that could be electrically heated to incandescence in a vacuum. At first he used platinum wire in glass bulbs at 10 volts.He realized, however, that independent lamp control would be necessary for home and office use. He then developed a three-wire system with a supply of 220 volts. Each lamp operated at 110 volts, but the higher voltage required a new substance other than that of platinum. Edison conducted an extensive search for another filament material, on Oct. 21, 1879, he showed a lamp useing a carbonized cotton thread that glowed for 40 hours. Edison made the first large power station on Pearl Street in New York City in 1882; its steam-driven generators of 900 horsepower gave enough power for 7,200 lamps. The success of this station led to the construction of many other power stations. Edison founded The Edison Electric Light Company in 1878, which eventually merged with other companies into the General Electric Company in 1892, one of the largest U.S. manufacturers.It still is around today. During his experiments on the light bulb, Edison saw a flow of electricity from a hot filament across a vacuum to a metal wire. This is known as thermionic emission.Which he did the improvments on. Edison also invented the phonograph in 1877, the invention he was most proud of. It used tinfoil and wax cylinders to record the sound. His introduction of flexible celluloid film and his invention of the movie projector aided the development of motion pictures. His other inventions are the alkaline storage battery, a magnetic process to separate iron ore, and the carbon microphone. Later on in life he bacame close friends with henry Ford. He helped Ford on the battery and other things on the Ford Modle T.Edison injoyed his later years and got a home in Florida which he whent to alot. He died in West Orange, N.J., on Oct. 18, 1931, he had patented over 1,000 inventions. Edison was one of the best inventors of of his time and ours. He is most famous for his development of the first commercially practical incandescent lamp in1879. One of his greatest contributions, however, was the of the world's first central electric light-power station.Other great inventions were phonograph, motion picture camera,microphone, and the light bulb. Technology Essays

Christmas and New Year Quotes

Christmas and New Year Quotes What do the wise and witty say about Christmas and the New Year? You can use these quotes for inspiration and see who is a kindred spirit. You might want to include one in your holiday greeting cards, social media posts, or family Christmas letter. Reach out to friends or relatives on the other side of the planet and shower them with these caring words. Phillips Brooks Christmas day is a day of joy and charity. May God make you very rich in both. W. J. Cameron There has been only one Christmas- the rest are anniversaries. Sydney Smith Resolve to make at least one person happy every day, and then in ten years you may have made three thousand, six hundred and fifty persons happy, or brightened a small town by your contribution to the fund of general enjoyment. Erma Bombeck Theres nothing sadder in this world than to awake Christmas morning and not be a child. Pat Boone The Christmas spirit love changes hearts and lives. Isabel Currier It is the personal thoughtfulness, the warm human awareness, the reaching out of the self to ones fellow man that makes giving worthy of the Christmas spirit. Patricia Clafford Christmas is a time to expand our giving encompassing the friendless and needy... near and far. Christmas is sharing. Debbie Harry I always work on New Years Eve, no matter what. Charles Lamb No one ever regarded the first of January with indifference. It is that from which all date their time, and count upon what is left. It is the nativity of our common Adam. Edward Payson Powell The old year has gone. Let the dead past bury its own dead. The New Year has taken possession of the clock of time. All hail the duties and possibilities of the coming twelve months! Mark Twain Yesterday, everybody smoked his last cigar, took his last drink and swore his last oath. Today, we are a pious and exemplary community. Thirty days from now, we shall have cast our reformation to the winds and gone to cutting our ancient shortcomings considerably shorter than ever. Buddha There is only one time when it is essential to awaken. That time is now. Pierre Teilhard de Chardin The ills from which we are suffering have their seat in the very foundation of human thought. But today something is happening to the whole structure of human consciousness. A fresh kind of life is starting. Charles Dickens It was the best of times, it was the worst of times, it was the age of wisdom, it was the age of foolishness, it was the spring of hope, it was the winter of despair. T. S. Eliot For last years words belong to last years language. And next years words await another voice. And to make an end is to make a beginning. Ralph Waldo Emerson Finish each day and be done with it. You have done what you could; some blunders and absurdities have crept in; forget them as soon as you can. Tomorrow is a new day; you shall begin it serenely and with too high a spirit to be encumbered with your old nonsense. William Thomas It wouldnt be New Years if I didnt have regrets.

The benefits of mechanical improvements in cardiopulmonary bypass Thesis Proposal

The benefits of mechanical improvements in cardiopulmonary bypass - Thesis Proposal Example This allows the cardiac operation to take be performed in a less chaotic and stationary environment thus reducing chances of error. During the procedure, the blood is gravity drained to a reservoir, it is then oxygenated and returned to the arterial system via a pump. One of the main concerns for physicians is the damage that is sustained by the blood and blood cells during friction as it is being propelled from the pump. The commonly used rolled pumps utilize a basic mechanism with tubing lined along a raceway with rollers massaging the tubing to propel the blood forward. This style of pump requires the clinician to keep the occlusion balanced at a level that ensures adequate forward blood flow with minimal damage the fragile blood cells inside the tubing. Roller pumps have been found to cause shear stress in blood that can lead to haemolysis, realease of vasoactive substances and spallation which is a breakdown in the tubing wall. Hemolysis and the corresponding increase in plasma free hemoglobin are severely detrimental to the patient outcome and prolong the patients’ recovery following cardiac surgery utilizing cardiopulmonary bypass. However, there has been some decrease in the occurrence of these risks by the utilization of centrifugal pumps that were specifically developed to eliminate intermittent tubing occlusion. Research has been done to provide evidence that the damage to red blood cells, platelets, and plasma proteins is minimized with the use of centrifugal pumps as compared to the common roller pumps.