The Discovery Of X Rays By Wilhelm Roentgen Essay

While the discovery of x-rays by Wilhelm Roentgen in 1895 was a major breakthrough in medical diagnosis and treatment, it was not without its own problems. The cancer-related deaths of earlier scientists like Pierre and Marie Curie, and Thomas Alva Edison who were directly exposed to radiation from their discoveries on radium and calcium tungstate respectively, were the proof of how dangerous the new breakthrough could be when handled without the necessary precautions. The work of Martha S. Linet, Kwang Pyo Kim, Donald L. Miller, Ruth A. Klienerman, Steven L. Simon, and Amy Berrington de Gonzalez traces the history of cancer risk in medical workers through the years from the early discovery of radiation. According to the findings done by Linet et al, recent research has found that cancer risk per dose of medical workers when measure is the same as that from the survivors of the Hiroshima atomic bombs. Apart from the research done mostly on the survivors of Japan’s Hiroshima a tomic bomb, very little research has been done specifically to fully comprehend the scope of the devastation that comes along with a life time career as a medical radiation worker. Given this limitation, the research studies done by Linet et al focuses primarily on the impact on radiologist and radiologic technologists. Nevertheless, the limited research findings report a substantial decline in the number of cancers related deaths amongst medical radiation workers over the years. Linet et al’s researchShow MoreRelated The Discovery of X-Rays Essay1005 Words   |  5 PagesThe Discovery of X-Rays X-rays were discovered by accident in 1895 by the German physicist Wilhelm Conrad Roentgen. Roentgen was already an accomplished scientist with forty-eight published papers. He had a reputation among the scientific community as a dedicated scientist with precise experimental methods. Roentgen had been conducting experiments at the University of Wurzburg on the effect of cathode-rays on the luminescence of certain chemicals. Roentgen had placed a cathode-ray tube, whichRead MoreWilhelm Rontgen and the Nobel Prize Essay567 Words   |  3 PagesWilhelm Conrad Rontgen was born on March 27, 1845 in Lennep, Prussia; which is now Remscheid, Germany. His family moved to Apeldoorn in the Netherlands, where we went to Institute of Martinus Herman van Doorn, a boarding school. He did not show any special aptitude, but he had a fascination with nature and loved roaming the countryside and walking through forests. Later he attended a technical school in Utrecht, but unfortunately was unfairly ex pelled for allegedly drawing a rude caricature of oneRead MoreTaking a Look at X-Rays822 Words   |  3 PagesThe first human x-ray was taken and discovered by German scientist Wilhelm Roentgen’s first experiment with cathode tube rays. The photo taken was the hand of his wife, Bertha. On the photo you can see a clear view of her hand through the flesh and bone. The first human X-ray was an amazing discovery. Numerous people including scientists, and inventors were so fascinated by the discovery that they started to experiment with cathode tube rays. But even so, x-rays have made many contributions to theRead More Wilhelm Conrad Roentgen Essay2023 Words   |  9 Pages Wilhelm Conrad Roentgen was born on March 27, 1845 in Lennep, Germany to Friedrich and Charlotte Constance Roentgen. When he was three Wilhelm and his family moved to Apeldoorn, Nederland. His father owned a thriving cloth business so he was pretty well off. He lived right next to the Kostschool of Martinus Hermanus van Doorn, a boarding school with around eighty students, which he attended. nbsp;nbsp;nbsp;nbsp;nbsp;He was expected after he graduated to go into his fathers business and eventuallyRead MoreThe History of the X-Rays Essay748 Words   |  3 Pagesof 1895, a German scientist by the name of Wilhelm Conrad Roentgen was working with a cathode-ray tube when he noticed nearby crystals were glowing. When Roentgen reached for the crystals he was amazed when the shadow cast on the crystal was not of his whole hand, but just his bones. Roentgen covered the tube with heavy black paper and saw that the crystals still glowed and the shadow of his hand bones still shown through, he then determined that a new ray was being emitted that could penetrate throughRead MoreDevelopment of the Periodic Table, X Rays and the Telescope Essay example853 Words   |  4 Pagesyou know that fire was the first chemical reaction humans learned to use and control? (worldbook.com) Chemistry has helped our world come up with new, advanced technology to benefit us all. Chemistry played a ro le in developing the periodic table, x-rays, and the telescope. Primarily, the Periodic Table of Elements was primarily thought to be developed by Dmitri Mendeleev. However, â€Å"Antoine Lavoisier first established the modern concept of the element in the late 1700s† (worldbook). MendeleevRead MoreHow Has Nuclear Medicine Propagated Science And Society?922 Words   |  4 PagesHow has nuclear medicine innovated science and society? Within the last century, science faced several discoveries that caused the scientific community and society to change one another. When evaluating the scientific discoveries during the twentieth century, the decisive advancements took place in the study of nuclear physics. Affecting both science and society inquires formed around medical uses for nuclear materials. Advanced research in nuclear science with radioisotopes allowed doctors to treatRead MoreRadiation has always been in everyday life even before Roentgen discovered x-ray. The mountains1600 Words   |  7 Pageslife even before Roentgen discove red x-ray. The mountains give off natural radiation, other forms of radiation are coal burning power plants, x-rays from a TV, and an airplane ride. The average dose from background radiation is about 360 mrem every year. There are two types of radiation, nonionizing and ionizing radiation. Examples of nonionizing radiation are microwaves and radio waves broadcasting. Ionizing radiation refers to gamma and x-rays. Ionizing radiation means that the rays are able to removeRead MoreA Brief Note On X Ray Vision Goggles1861 Words   |  8 PagesAbstract MRI’s today are the solution to X-Rays by having radio waves go back and forth transmitting signals that allow Doctors to see inside the human body. There are not many downsides of MRI’s, however MRI’s do not fit in the average waiting room by being circular tube like machines that take about 1 hour to produce a clear image of a patient’s problem. MRI’s are great when it comes to mental disabilities but when it comes to broken bones, it is too time consuming to wait in the machine for anRead MoreEssay about The History of Chemistry833 Words   |  4 Pagesscience, we have complex devices like cars, X-ray machines, computers, and phones. But the technologies that science has motivated consist of more than just hi-tech machines. Technology extends our abilities to change the world. Anticipating the effects of technology is therefore as important as advancing its capabilities. But also enhance our way of living and understanding of science. One of medicines most wonderful accomplishments is the use of X-rays to see inside the body without having a surgeon

Growing up in central Ohio there are several things that...

Growing up in central Ohio there are several things that you will see on a regular basis. One of these items in a buckeye, it is the symbol of the university here in town. Around the holidays we make candies called buckeyes that are rolled balls of peanut butter dipped in chocolate. People refer to individuals from Ohio as buckeyes as well. What is a buckeye and where does it come from? The buckeye tree, which is also, known as Aesculus Glabra is the state tree of Ohio. Sometimes called a horse chestnut the buckeye tree is commonly found throughout the Midwest reaching from Michigan all the way down to isolated areas of Texas and Oklahoma. The area is classified as the temperate deciduous forest biome. A favorite of early Ohio settlers†¦show more content†¦The trees aren’t going to be the tallest in the forest. They are usually 30-40 foot tall and 3-4 foot tall. The trees reach maturity with in 60-80 years of age and most often living upwards of 100 years of age. Like I previously mention the buckeye tree blooms early in the spring. Flowers are a white to yellow-greenish color and form in small clusters. Each flower will produce 1-2 seeds that will produce up to 5 nuts each inside the capsule. The capsule is a pale yellow color that is spiny. The tree is one of the earliest to lose their leaves in the fall turning to a nice yellow and red color before falling off. The buckeye tree has learned to adapt pretty well for survival. Its short stature means that it usually has taller trees in the forest towering over it. While it can grow in the shade it prefers to be in open clusters or along streambeds in moisture rich soil. It has also shown great resistance to fungus and disease. There are only six known diseases that affect the tree. One of the most common and most serious problems that the buckeye tree will experience is leaf scorch. Most likely caused by drought conditions or pollution. The buckeye tree is polygamo-monoecious. The flower cluster s at the base of the branch are fertile and can reproduce while the flowers further up the branch are staminate. A few other interesting things that I learned when doing the research on the buckeye treeShow MoreRelatedStatement of Purpose23848 Words   |  96 PagesOhio Wesleyan Writing Center Founded University Promoting1955 as a hallmark of liberal arts education writing Writing Guidelines Statements of Purpose From the OWU Writing Center in the Sagan Academic Resource Center The OWU Writing Center Corns 316 ââ€" ª (740-368-3925) ââ€" ª http://writing.owu.edu ââ€" ª open Monday-Friday, 9:00 a.m. to 5:00 p.m. Ohio Wesleyan University Writing Center  © 2011 Writing Guidelines for Statements of Purpose Contents Writing Your Statement of Purpose ..........Read MoreStefan Thomke9089 Words   |  37 Pageslocation new product and service concepts were being tested continuously. Experiments included â€Å"virtual tellers,† video monitors displaying financial and investment news, computer stations uploading images of personal checks, and â€Å"hosting stations.† (See Exhibit 1 for a selection of experiments carried out in a single branch.) Currently, the ID team had 25 bank branches in Atlanta in its experimentation portfolio. Senior management, however, had now offered them additional branches across the countryRead MoreMenards E-Business Plan3782 Words   |  16 Pagesbuilding materials, hardware, electrical, wall coverings, plumbing, housewares, floor coverings, cabinets, appliances and much more. Menards is a privately held franchise headquartered in Eau Claire, Wisconsin; the company has 252 stores in 12 states: Ohio, Michigan, Indiana, Illinois, Wisconsin, Minnesota, Iowa , Missouri, Nebraska, South Dakota, North Dakota and Wyoming. While the company does not release sales figures, it is believed to be the third largest home center chain in the United States behindRead MoreDollar to Fall as World Currency12311 Words   |  50 PagesWARNING: What you are about to see is controversial, and may be offensive to some audiences. Viewer discretion is advised. Hello. My name is Porter Stansberry. A little over ten years ago I founded Stansberry Associates Investment Research. It has become one of the largest and most recognized investment research companies in the world, serving hundreds of thousands of subscribers in more than 120 countries. You may know of our firm because of the work we did over the last several years –Read MoreDesigning a Customer Driven Statergy23698 Words   |  95 Pagesof understanding consumers and the marketplace environment. With that as background, you’re now ready to delve deeper into marketing strategy and tactics. This chapter looks further into key customer-driven marketing strategy decisions—how to divide up markets into meaningful customer groups (segmentation), choose which customer groups to serve (targeting), create market offerings that best serve target customers (differentiation), and position the offerings in the minds of consumers (positioning)Read MoreAirborne Express 310731 Words   |  43 Pagesthe quarter were up by 29% over the previous year, and yearto-date net earnings had increased by more than 500%. Airborne’s management team knew that the great results were, in part, fleeting. As the third largest player in the express mail industry, Airbor ne had gotten a boost from the recent strike at rival UPS. But that seemed to account for only a small portion of the earnings gain, perhaps one-fifth. Roy Liljebeck, the company’s chief financial officer, commented: While the UPS strike was theRead MoreCyber Crime8138 Words   |  33 Pagesit. Cyber criminals take advantages of vulnerabilities by using viruses, bots, etc to cause damage and/or maybe steal information. There are ways that this can be minimized by being aware of what the problems are. There are many problems but common ones are discussed. Not can these problems be solved on an individual or organization level but also on a global level. This paper will look at what cyber crime is and three topics that discuss the problems with cyber crime and how to prevent it. TheRead MoreRetailing Characteristics of Fast Food Stores and Their Impact on Customer Sales and Satisfaction29639 Words   |  119 Pagesindividual items. Computer-operated depots and logistical systems integrated store replenishment with consumer demand in a single electronic system. The superstore was born. On the Global Retail Stage, little has remained the same over the last decade. One of the few similarities with today is that Wal-Mart was ranked the top retailer in the world then and it still holds that distinction. Other than Wal-Mart’s dominance, there’s little about today’s environment that looks like the mid-1990s. The globalRead MoreBoyer Dbq Teacher Guide10764 Words   |  44 Pagesprior to 1660, the documents refer to some things that happened later and a student could reasonably include information on events that happened after that date to assess the success of the colonizing efforts. Students should be somewhat skilled at writing standard essays before attempting to answer DBQs. If your students have not mastered the expository essay form, you may want to try a simpler activity that will require them to use these documents. You could pose a quiz question requiring them toRead MoreEssay on Framing the User: Social Constructions of Marijuana Users9798 Words   |  40 PagesFraming the User: Social Constructions of Marijuana Users and the Medical Marijuana Movement Nelson A. Pichardo Almanzar Dept. of Sociology Central Washington University Ellensburg, WA 98926 Pichardn@cwu.edu Thanks to Laura Appleton and Ericka Stange for comments on an earlier draft. Thanks also to Kirk Johnson for his assistance in locating criminal data sets. Framing the User: Social Constructions of Marijuana Users and the Medical Marijuana Movement ABSTRACT Social movements are continuously

Dilation Essay Example For Students

Dilation Essay DilationDilation has been used for millions of years. Even in the ancient times and still we use it until this day. An example of dilation used in ancient times is when ancient Egyptians built the pyramids. The pyramids were built in different sizes, but proportional. Now in this day and time we use dilation in many aspects. Dilation is used in both science and math. In science the microscope shows dilation, without microscopes many of the scientific discoveries wouldnt be possible! In math dilationmainly is used in Geometry to draw figure of different sizes in proportional sizes. Inart dilation is used widely for, example architecture, paintings, and statues. In oureveryday life we have many examples of dilation like, binoculars, toy cars, little ornaments that represent larger ones in a smaller version. This involves the use of dilations, that is, transformations of the plane that are either contractions or expansions about a point (the center of the dilation), by a constant (positive) ratio. A dilation can either be an expansion (if the ratio is larger than one) or a contraction (if it is smaller than one). Look at the figure below.Construct a point C in the plane, and mark it as the center of dilation. Now draw any polygonal figure, and dilate it about the center C by a fixed ratio (1/2, or 3, or whatever). Drag around this polygon, and observe how the image changes. In particular look at the vertices, their images and the center. Can you see any relation among them? To find the scale factor we have to add one side of both corresponding sides and divide them by the corresponding side of the preimage. For example, side A for the preimage is equal to 5 and side A for the image is equal to 10. Thus, 5+10/5 so the scale factor will equal 3!!!!Preimage ImageWhen I first learned about d ilation, I thought that is wasnt important and that there was no use for it at all, but doin this project made my perspective of dilation and Geomety change. Dilation is important. I have learned that dilation isnt used in just Geometry, it is used in science, math, art, and our everyday life. Dilation is used everywhere, without you even realizing it, but hopefully after reading this you have realized that we need dilation.

The production as a whole Essay Example For Students

The production as a whole Essay The length of Dr MacFarlanes part has been shortened substantially, although I cant understand why, as Dr MacFarlane is one of the best characters (in my opinion). As well as a few additions and subtractions some things have been altered slightly. For example, on Willie and Maggies wedding night the performance shows Willie marching boldly into the bedroom, but in the play Maggie has to drag him in by the ear. Although they are a pretty important feature, a production doesnt just consist of a bunch of actors, and if one did it wouldnt be very successful, no matter how good the actors. We will write a custom essay on The production as a whole specifically for you for only $16.38 $13.9/page Order now A variety of other things are needed: music, sets, costumes, special effects, that sort of thing. All of these things are used in Leans production. The music, although sounding slightly dated, matches the feel of the film perfectly. On Willies wedding night, for example, the music turns into an important piece of the comedy. Just as Willie is about to march into the bedroom music swells up ominously, then suddenly changes into a sort of military piece as Willie strides valiantly into the unknown. The sets represent Victorian Salford: not a particularly lavish place, more adequately described as sombre (bordering on depressing), and are quite realistic. The costumes are realistically Victorian, and those who cannot determine this by eye will be able to guess when Hobson starts complaining about the bustles that Alice and Vicky wear. The special effects in the performance are few, and are nowhere near as impressive as modern SFX, but, considering this performance was filmed in 1954, the effects compliment the rest of the performance perfectly. The part where Hobson is delusional due to his many years of heavy drinking is a perfect example of the effects in Hobsons Choice, because in that scene Hobson imagines he sees a swarm of mosquitoes attacking him, and then imagines a man-sized rabbit at the foot of his bed. Overall I think that David Leans adaptation of Harold Brighouses Hobsons Choice is a marvel of its time. It sticks to the play almost word for word, and with the small changes that have been made the conversion from book to screen worked perfectly (although I think that Dr MacFarlanes role in this performance ends much too abruptly). The conflicting personalities of Hobson and Maggie are brought to life marvellously by Laughton and de Banzie, while John Mills timid Willie Mossop is stuck hopelessly in the middle. The grim streets of Victorian Salford make for the perfect background of this macabre slice of urban drama, while the comical antics of its residents lighten the atmosphere, making the genre of this performance somewhat enigmatic: comedy or drama? Whatever it is, it is certainly an intelligent piece of work (Hobsons entrapment by eldest daughter Maggie so that he is forced to award her and her sisters financial settlements is exceptionally clever), and Lean should be congratulated. Matthew Gibson, B10. Show preview only The above preview is unformatted text This student written piece of work is one of many that can be found in our GCSE Harold Brighouse section.