Statement Of Teaching Philosophy My Lifelong Passion For...

Statement of Teaching Philosophy My lifelong passion for Maths and my desire to share it with others have enhanced my admiration of the subject and reinforced my aspiration to become a teacher. During my 12 years of teaching experience, I was trying to best exemplify the three important points: (i) love of teaching, (ii) love of mathematics, and (iii) concern for the student. Overall, I am committed to an applied/interdisciplinary approach to scholarship and teaching mathematics, and I try to structure all of my courses with this in mind. Specifically, my personal teaching philosophy includes the following points: †¢ I encourage an atmosphere in which mathematics is appreciated simply because Maths is beautiful. Examples of the beauty of mathematics: a well-constructed proof, a simple trick/technique to solve a problem. Mathematics can be viewed as an art, a beautiful work worthy of admiration. If the student sees math as not only a means to an end (e.g., to apprehend physical processes) but an end in itself, he/she will ultimately develop respect, admiration, and then aspiration for the subject. †¢ I emphasize the importance of class participation. I try to make classroom an atmosphere where all the students feel comfortable to ask a question, make a comment, or give a response. Overall, I try to maintain an open, lively and amiable atmosphere in the classroom in spite of all the mathematics. Students are often reticent in asking questions; perhaps they are afraid ofShow MoreRelatedSAT Top 30 Essay Evidence18536 Words   |  75 Pages and study them until you can easily discuss them with friends, parents, and teachers. If you’d like to research your own topics, this special report provides many templates for exactly what kind of information and notes you need to take. Follow my model and you will have no trouble researching additional evidence on your own. I suggest studying at least three of the thirty examples I’ve provided, but if you’re really serious about getting a perfect 12, I recommend a minimum of five examplesRead More65 Successful Harvard Business School Application Essays 2nd Edition 147256 Words   |  190 Pagesunfocused? Probably not. The essays included in this book will convince you that you can be poignant in few words. We suggest that you create the first draft without a strict word limit. In the subsequent draft, ask yourself re... peatedly: What is my core message? Does this sentence improve upon or clarify that message? By doing this, you will be able to dis.. till the key anecdotes and interpretations from a pool of excessive descriptions and unnecessary details. The essays in this book will helpRead MoreFrankenstein Study Guide14107 Words   |  57 Pagesfind these time-saving instructor aids: †¢ About the Work: pertinent background information on the work and a detailed synopsis of its plot. †¢ Media Links: annotated listings of audio, visual, electronic, and print resources related to the work. †¢ Teaching Options: high-interest activities for introducing the work and individualizing instruction. †¢ Options for Using Related Readings: suggested approaches to the Related Readings included with the work. †¢ Answer Key: detailed answers to all questionsRead MoreInnovators Dna84615 Words   |  339 Pagescompetitive edge. at innovation advantage can translate into a premium in your company’s stock price—an innovation premium—that is possible only by building the code for innovation right into your organization’s people, processes, and guiding philosophies. Practical and provocative, e Innovator’s DNA is an essential resource for individuals and teams who want to strengthen their innovative prowess. (Continued on back flap) 100092 00 i-vi r1 rr.qxp 5/13/11 6:52 PM Page i THE Read MoreDeveloping Management Skills404131 Words   |  1617 PagesCongress Cataloging-in-Publication Data Whetten, David A. (David Allred) Developing management skills /David A. Whetten, Kim S. Cameron.—8th ed. p. cm. Includes bibliographical references and index. ISBN 978-0-13-612100-8 1. Management—-Study and teaching. 2. Management—Problems, exercises, etc. Kim S. II. Title. HD30.4.W46 2011 658.40071 173—dc22 I. Cameron, 2009040522 10 9 8 7 6 5 4 3 2 ISBN 10: 0-13-612100-4 ISBN 13: 978-0-13-612100-8 B R I E F TA B L E O F C O N T E N T S PrefaceRead MoreManagement Course: Mba−10 General Management215330 Words   |  862 Pagesof a company is the sum of its brand name and its management systems. THE CHARACTER OF LEADERSHIP NECESSARY FOR SUCCESS AT PACESETTER COMPANIES The profitability and growth of pacesetter companies is driven by a type of leadership that has the passion, populism, and disciplined responsibility to understand and effectively manage the total resources and relationships that form the foundation of the broadly based business value of the twenty-firstcentury company. Such leadership is also a necessaryRead MoreStephen P. Robbins Timothy A. Judge (2011) Organizational Behaviour 15th Edition New Jersey: Prentice Hall393164 Words   |  1573 PagesDiversity Management Strategies 56 Attracting, Selecting, Developing, and Retaining Diverse Employees 56 †¢ Diversity in Groups 58 †¢ Effective Diversity Programs 58 Summary and Implications for Managers 60 S A L Self-Assessment Library What’s My Attitude Toward Older People? 40 Myth or Science? â€Å"Dual-Career Couples Divorce Less† 47 An Ethical Choice Religious Tattoos 51 glOBalization! 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Literary Analysis of The Strange Case of Dr. Jekyll and...

The city of London proved to be the sole dominant location in the 1800’s during the Victorian era in this novel. As the story unfolds in the classic literature novel, â€Å"The Strange Case of Dr. Jekyll and Mr. Hyde† written by Robert Louis Stevenson, the magnificent city of London becomes a darker and mysterious location. The powerful city of London embodied the freedom and solitude required for the antagonist of the story, Mr. Hyde to hide his wicked behavior from the society as a whole. According to the history of the Victorian age, â€Å"Traditional ways of life were fast being transformed into something perilously unstable and astonishingly new† (1049). The population in England was growing at an astounding rate, illustrating the transition†¦show more content†¦Initially, Utterson comes off as having a dull and shy personality, which is quite contradicting to his career as being a prestigious lawyer. Although, upholding a law degree promised the co nfidentiality of all of Mr. Utterson’s cases. â€Å"For he was undemonstrative at the best and even his friendships seemed to be founded in a similar catholicity of good-nature† (1780). He believed that it is not a moral thing to talk about others behind their back. In addition, Enfield and Utterson’s conversation in the exposition of the novel illustrated the strict suppression everyone had to constantly obey: â€Å"He was austere with himself; drank gin when he was alone, to mortify a taste for vintages; and though he enjoyed the theatre, had not crossed the doors of one for twenty years† (1780). Stevenson emphasized that you need to â€Å"play by the book†. This is important that the desire to preserve social reputation keeps us from doing these disgraceful things too much. Although, Utterson would love to engage in a casual drink as well as attend a theatre performance, but he cannot because of the respectable reputation he needs to constantly maintain. Ultimately, they are expected to hide and conceal their bad habits from the rest of the society, which shows that human nature has two sides to everyone. The rising actions of the novel occur when the antagonist, Edward Hyde, tramples and kills a man of the parliament on the darkShow MoreRelatedAn Analysis Of Dr. Jekyll And Mr. Hyde1729 Words   |  7 PagesTaking a Closer Look into the Story and Author of Dr. Jekyll and Mr. Hyde Nothing Mr. Stevenson has written as yet has so strongly impressed us with the versatility of his very original genius. An anonymous review in â€Å"The Times† noted Robert Louis Stevenson for his intelligence in The Strange Case of Dr. Jekyll and Mr. Hyde. The review continued with saying that the story, be read as a finished study in the art of fantastic literature. Whoever was the anonymous person to state these things aboutRead More Analysis of The Strange Case of Dr. Jekyll and Mr. Hyde by Robert Louis Stevenson2888 Words   |  12 PagesAnalysis of The Strange Case of Dr. Jekyll and Mr. Hyde by Robert Louis Stevenson In an attempt to consider the duality tale, one narrative inevitably finds its way to the top of the heap as the supreme archetype: Robert Louis Stevenson’s The Strange Case of Dr. Jekyll and Mr. Hyde. Immense disagreement permeates the pages of literary criticism relevant to the meaning of the story. Yet, for all of the wrangling focused on the psychology, morality, spirituality, and sociality of the story, itRead MoreBook Report - Dr. Jekyll and Mr. Hyde4784 Words   |  20 Pagesthe Book: â€Å" The Strange Case of Dr. Jekyll and Mr. Hyde† B. Author: Robert Louis Stevenson (1850 -1894) * As a novelist, he is often noted for the powers of invention and depth of psychological insights found in his work; a skill defined by G. K. Chesterton as being able ‘to pick up the right word up on the point of his pen’. * Robert Louis Balfour Stevenson  was a Scottish  novelist, poet, essayist, and  travel writer. * A literary celebrity during hisRead MoreBook Report - Dr. Jekyll and Mr. Hyde4772 Words   |  20 Pagesof the Book: â€Å" The Strange Case of Dr. Jekyll and Mr. Hyde† B. Author: Robert Louis Stevenson (1850 -1894) * As a novelist, he is often noted for the powers of invention and depth of psychological insights found in his work; a skill defined by G. K. Chesterton as being able ‘to pick up the right word up on the point of his pen’. * Robert Louis Balfour Stevenson  was a Scottish  novelist, poet, essayist, and  travel writer. * A literary celebrity during his lifetimeRead MoreHow Does the Use of Setting and Imagery Affect the Readers Understanding of Dr. Jekll and Mr Hide?1190 Words   |  5 PagesIntroduction Robert Louis Stephensons masterpiece, Dr. Jekyll and Mr. Hyde (1886) symbolizes Hyde as a representative of the specific Victorian anxieties. He is seen as the ugly, deformed, apelike, but also reflecting Victorian fears about Darwinian evolution theories of humanitys deform from ape, and fears the newly enfranchised working classes. This essay will explore the function of the narrative which helps the readers to perceive the meaning of the narrative. It will do so in termsRead MoreFrankenstein And The Strange Case Of Dr. Jekyll And Mr. Hyde2282 Words   |  10 Pagesiniquity of the antagonists of two classic literary works – Dracula and The Strange Case of Dr. Jekyll and Mr. Hyde – but also to analyze and explain how these villains represent human temptations and the dark side of a person’s character. Throughout this essay each section will serve to explain what the villains represent and how it ties back to human nature. The Introduction will define evil and villainy as well as the purpose of both villains – Dracula and Hyde – and why this topic is relevant. TheRead MoreJekyll And Mr Hyde Deconstruction1359 Words   |  6 Pages In The Strange Case of Dr. Jekyll and Mr. Hyde, Robert Louis Stevenson tells the story of a doctor who uses his medical and scientific knowledge to enable himself to do entirely as he pleases. Through Jekyll’s creation of his alter ego Hyde, Jekyll can do whatever he wants with no consequences. Ultimately, however, Hyde seems to overtake Jekyll, resulting in the death of both identities. For many readers, the final part of the story supplies satisfactory answers to enough of the questions to

MEdications Essay Example For Students

MEdications Essay StreptokinaseThrombolytic, aka clot buster. One of our TPA (tissue plasminogen activator) used to bust clots in a pt with a stroke from an embolus or a thrombus or is having an MI from a thrombus or an embolus. Problem is if you bust the clot it will bust clots from head to toe giving biggest risk of BLEEDING. Aminophylline/TheoDur Adrenergic bronciodilators, watch aminophylline levels bc there is I fine line between theraputic and toxic. Dilate pupils so dont give to closed angle glaucoma. Will make you nervous jittery, decrease caffeine in their diet. HeparinAnticoagulant, monitor dose with PTT, can be given sub-q or IV. Never ever IM because it will make the muscle bleed. #1 drug when a person has a DVT, must have drug double checked with another nurse before giving. SE: bleeding. Antidote is prodomyicin sulfate. Morphine Opiate agonist, narcotic analgesic that all narcotics are based upon (prototype) non-ceiling drug, so keep on giving, raise dose for more pain. Used for acute pain such as post surgery and burn pain. But it is also good in severe chronic pain, such as pain from cancer. Comes in tablets (rare), liquid, injectable form, and a PCA pump form. Usual dose 10-12 mg q 2-4 hrs. biggest problem= it is a CNS depressant so need to avoid other CNS depressants (alcohol), can cause resp depression. Do not give is resp are 12 or below. Double check resp in hr (inj)DigoxinLanoxin, cardiotonic glycoside. Slows but strengthens the heartbeat, often give a loading dose to get the heart were it is supposed to be and then back off and give a maintanence dose. Usual dose 0.25 mg. always check an apical before giving, if below 60 hold the med and call dr. biggest problem is in older patients where there glomerular filtration rate decreases, they end up with accumulation of this drug, because their A DME is decreased as well as their glomerular filtration. Have a apical pulse of like 40MarplanMAO inhibitor, used as antidepressant, main concern is a diet that is low in fermented things (beer, cheese) can throw them into a hypertensive state. NitroglycerinCoronary vasodilator, used to treat angina, comes in a sublingual tablet to be used in an attack, can us one every five minutes up to 15 minutes, or 3 doses before calling 911. need to replace the bottle every 3 to 6 months, keep in a dark tight container (disenigrates when exposed to air, moisture, or light), come in a bid med, called nitrobid. Comes in patch that you take every day, opens up blood vessels to the heart. OxytocinExample, pitocin. It causes the contraction of the uterus. To initiate labor, but also given post partum to prevent hemmorrage. Need to watch uterus and contractions. WarfarinGeneric name of coumadin. Anticoagulant. Works against the PT, and INR (1.5-2.0 x the control). Taken PO when dismissed from hospital. Antidote is vitamin K. if they are on coumadin then they are on restricted diet high in vitamin k. watch for bleedingValiumBenzodiazapine, anticonvulsive, hypnotic sedative, muscle relaxant, anti xyolitic. Color coated for different doses. (white, yellow, pink), dose come in injectable form. Never ever mix with another med. Is a CNS depressant, so watch giving with other CNS depressants, or alcohol. BactrimSulfonamide, not a true antibiotic, but antimicrobial agent, used to treat UTI and otitis media in children. SE: allergies, urine crystals. So you need to push fluidsAspirinNon narcotic analgesic, also an NSAID bc it reduces inflammation, antipyretic by reducing fevers. Given in small amounts to prevent platelets from sticking together, that prevents strokes or MIs (81 mg tablet daily). Watch for bleeding. Causes upset GI, do not allow kids to take because of ryes syndrome. Gi bleeding and GI upset are on of the biggest problems with aspirin. .u1934ad209049ec241d31772adce03eae , .u1934ad209049ec241d31772adce03eae .postImageUrl , .u1934ad209049ec241d31772adce03eae .centered-text-area { min-height: 80px; position: relative; } .u1934ad209049ec241d31772adce03eae , .u1934ad209049ec241d31772adce03eae:hover , .u1934ad209049ec241d31772adce03eae:visited , .u1934ad209049ec241d31772adce03eae:active { border:0!important; } .u1934ad209049ec241d31772adce03eae .clearfix:after { content: ""; display: table; clear: both; } .u1934ad209049ec241d31772adce03eae { display: block; transition: background-color 250ms; webkit-transition: background-color 250ms; width: 100%; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #95A5A6; } .u1934ad209049ec241d31772adce03eae:active , .u1934ad209049ec241d31772adce03eae:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #2C3E50; } .u1934ad209049ec241d31772adce03eae .centered-text-area { width: 100%; position: relative ; } .u1934ad209049ec241d31772adce03eae .ctaText { border-bottom: 0 solid #fff; color: #2980B9; font-size: 16px; font-weight: bold; margin: 0; padding: 0; text-decoration: underline; } .u1934ad209049ec241d31772adce03eae .postTitle { color: #FFFFFF; font-size: 16px; font-weight: 600; margin: 0; padding: 0; width: 100%; } .u1934ad209049ec241d31772adce03eae .ctaButton { background-color: #7F8C8D!important; color: #2980B9; border: none; border-radius: 3px; box-shadow: none; font-size: 14px; font-weight: bold; line-height: 26px; moz-border-radius: 3px; text-align: center; text-decoration: none; text-shadow: none; width: 80px; min-height: 80px; background: url(https://artscolumbia.org/wp-content/plugins/intelly-related-posts/assets/images/simple-arrow.png)no-repeat; position: absolute; right: 0; top: 0; } .u1934ad209049ec241d31772adce03eae:hover .ctaButton { background-color: #34495E!important; } .u1934ad209049ec241d31772adce03eae .centered-text { display: table; height: 80px; padding-left : 18px; top: 0; } .u1934ad209049ec241d31772adce03eae .u1934ad209049ec241d31772adce03eae-content { display: table-cell; margin: 0; padding: 0; padding-right: 108px; position: relative; vertical-align: middle; width: 100%; } .u1934ad209049ec241d31772adce03eae:after { content: ""; display: block; clear: both; } READ: Culinary Arts Essay PaperAlbuterolAdrenergic bronchiodilator, use in inhaler, need to know how to use properlyPen V-KPenicillin antibiotic, main concern is hypersensitivity. Ask questions first, and watch for rashes. Milk of MagnesiaAntacid, saline laxative. Problem is OD them you can end up with hypermagnesisumism. Mix it well before taking and you can flush it with waterMetamucilBulk laxative, safe or natural. Mix in the room or it will become paste. OncovinAntineoplastic agents for cancer. Chemo agent. SE: bone marrow depression, N/V, anorexia, alopeciaProcardiaCalcium channel blocker, used for an

Theories Of The Origin Of The Moon Essay Example For Students

Theories Of The Origin Of The Moon Essay The Moon is the only natural satellite of Earth. The distance from Earthis about 384,400km with a diameter of 3476km and a mass of 7.35*1022kg. Through history it has had many names: Called Luna by the Romans, Selene andArtemis by the Greeks. And of course, has been known through prehistoric times. It is the second brightest object in the sky after the Sun. Due to its size and composition, the Moon is sometimes classified as a terrestrial planetalong with Mercury, Venus, Earth and Mars. Origin of the Moon Before the modern age of space exploration, scientists had three major theories for the origin of the moon: fission from the earth; formation inearth orbit; and formation far from earth. Then, in 1975, having studied moonrocks and close-up pictures of the moon, scientists proposed what has come to be regarded as the most probable of the theories of formation, planetesimalimpact or giant impact theory. Formation by Fission from the Earth The modern version of this theory proposes that the moon was spun off from the earth when the earth was young and rotating rapidly on its axis. Thisidea gained support partly because the density of the moon is the same as thatof the rocks just below the crust, or upper mantle, of the earth. A majordifficulty with this theory is that the angular momentum of the earth, in order toachieve rotational instability, would have to have been much greater than theangular momentum of the present earth-moon system. We will write a custom essay on Theories Of The Origin Of The Moon specifically for you for only $16.38 $13.9/page Order now Formation in Orbit Near the EarthThis theory proposes that the earth and moon, and all other bodies of thesolar system, condensed independently out of the huge cloud of cold gases andsolid particles that constituted the primordial solar nebula. Much of thismaterial finally collected at the center to form the sun. Formation Far from Earth According to this theory, independent formation of the earth and moon, asin the above theory, is assumed; but the moon is supposed to have formed at a different place in the solar system, far from earth. The orbits of theearth and moon then, it is surmised, carried them near each other so that the moonwas pulled into permanent orbit about the earth. Planetesimal Impact First published in 1975, this theory proposes that early in the earthshistory, well over 4 billion years ago, the earth was struck by a large body calleda planetesimal, about the size of Mars. The catastrophic impact blastedportions of the earth and the planetesimal into earth orbit, where debris from theimpact eventually coalesced to form the moon. This theory, after years of researchon moon rocks in the 1970s and 1980s, has become the most widely accepted one for the moons origin. The major problem with the theory is that itwould seem to require that the earth melted throughout, following the impact,whereas the earths geochemistry does not indicate such a radical melting. Planetesimal Impact Theory (Giant Impact Theory)As the Apollo project progressed, it became noteworthy that few scientists working on the project were changing their minds about which of these threetheories they believed was most likely correct, and each of the theorieshad its vocal advocates. In the years immediately following the Apollo project,this division of opinion continued to exist. One observer of the scene, apsychologist, concluded that the scientists studying the Moon were extremely dogmatic andlargely immune to persuasion by scientific evidence. But the facts werethat the scientific evidence did not single out any one of these theories. Each oneof them had several grave difficulties as well as one or more points in its favor. .ub10c02ba90676912c6f62191cc6822ee , .ub10c02ba90676912c6f62191cc6822ee .postImageUrl , .ub10c02ba90676912c6f62191cc6822ee .centered-text-area { min-height: 80px; position: relative; } .ub10c02ba90676912c6f62191cc6822ee , .ub10c02ba90676912c6f62191cc6822ee:hover , .ub10c02ba90676912c6f62191cc6822ee:visited , .ub10c02ba90676912c6f62191cc6822ee:active { border:0!important; } .ub10c02ba90676912c6f62191cc6822ee .clearfix:after { content: ""; display: table; clear: both; } .ub10c02ba90676912c6f62191cc6822ee { display: block; transition: background-color 250ms; webkit-transition: background-color 250ms; width: 100%; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #95A5A6; } .ub10c02ba90676912c6f62191cc6822ee:active , .ub10c02ba90676912c6f62191cc6822ee:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #2C3E50; } .ub10c02ba90676912c6f62191cc6822ee .centered-text-area { width: 100%; position: relative ; } .ub10c02ba90676912c6f62191cc6822ee .ctaText { border-bottom: 0 solid #fff; color: #2980B9; font-size: 16px; font-weight: bold; margin: 0; padding: 0; text-decoration: underline; } .ub10c02ba90676912c6f62191cc6822ee .postTitle { color: #FFFFFF; font-size: 16px; font-weight: 600; margin: 0; padding: 0; width: 100%; } .ub10c02ba90676912c6f62191cc6822ee .ctaButton { background-color: #7F8C8D!important; color: #2980B9; border: none; border-radius: 3px; box-shadow: none; font-size: 14px; font-weight: bold; line-height: 26px; moz-border-radius: 3px; text-align: center; text-decoration: none; text-shadow: none; width: 80px; min-height: 80px; background: url(https://artscolumbia.org/wp-content/plugins/intelly-related-posts/assets/images/simple-arrow.png)no-repeat; position: absolute; right: 0; top: 0; } .ub10c02ba90676912c6f62191cc6822ee:hover .ctaButton { background-color: #34495E!important; } .ub10c02ba90676912c6f62191cc6822ee .centered-text { display: table; height: 80px; padding-left : 18px; top: 0; } .ub10c02ba90676912c6f62191cc6822ee .ub10c02ba90676912c6f62191cc6822ee-content { display: table-cell; margin: 0; padding: 0; padding-right: 108px; position: relative; vertical-align: middle; width: 100%; } .ub10c02ba90676912c6f62191cc6822ee:after { content: ""; display: block; clear: both; } READ: to kill a Mockingbird Persuasive EssayIn the mid-1970s, other ideas began to emerge. William K. Hartmann and D.R. Davis (Planetary Sciences Institute in Tucson AZ) pointed out that theEarth, in the course of its accumulation, would undergo some major collisions withother bodies that have a substantial fraction of its mass and that thesecollision would produce large vapor clouds that they believe might play a role in theformation of the Moon. A.G.W. Cameron and William R. Ward (Harvard University, Cambridge MA) pointed out that a collision with a body having at least themass of Mars would be needed to give the Earth the present angular momentum ofthe Earth-Moon system, and they also pointed out that such a collision would produce a large vapor cloud that would leave a substantial amount ofmaterial in orbit about the Earth, the dissipation of which could be expected to formthe Moon. The Giant Impact Theory of the origin of the Moon has emerged from these suggestions. These ideas attracted relatively little comment in the scientific communityduring the next few years. However, in 1984, when a scientific conference on theorigin of the Moon was organized in Kona, Hawaii, a surprising number of paperswere submitted that discussed various aspects of the giant impact theory. At thesamemeeting, the three classical theories of formation of the Moon werediscussed in depth, and it was clear that all continued to present grave difficulties. The giant impact theory emerged as the fashionable theory, but everyone agreed thatit was relatively untested and that it would be appropriate to reservejudgement onit until a lot of testing has been conducted. The next step clearly calledfor numerical simulations on supercomputers. The author in collaboration with Willy Benz (Harvard), Wayne L.Slattery at(Los Alamos National Laboratory, Los Alamos NM), and H. Jay Melosh (Universityof Arizona, Tucson, AZ) undertook such simulations. They have used an unconventional technique called smooth particle hydrodynamics to simulatethe planetary collision in three dimensions. With this technique, we havefollowed a simulated collision (with some set of initial conditions) for many hours ofreal time, determining the amount of mass that would escape from the Earth-Moon system, the amount of mass that would be left in orbit, as well as therelative amounts of rock and iron that would be in each of these different massfractions. We have carried out simulations for a variety of different initialconditions and have shown that a successful simulation was possible if the impactingbody had a mass not very different from 1.2 Mars masses, that the collision occurredwith approximately the present angular momentum of the Earth-Moon syst em, and that the impacting body was initially in an orbit not very different fromthat of the Earth. The Moon is a compositionally unique body, having not more than 4% of its mass in the form of an iron core (more likely only 2% of its mass in thisform). This contrasts with the Earth, a typical terrestrial planet in bulkcomposition, which has about one-third of its mass in the form of the iron core. Thus, asimulation could not be regarded as successful unless the material leftin orbit was iron free or nearly so and was substantially in excess of the mass ofthe Moon. This uniqueness highly constrains the conditions that must be imposedon the planetary collision scenario. If the Moon had a composition typical ofother terrestrial planets, it would be far more difficult to determine theconditions that led to its formation. The early part of this work was done using Los Alamos Cray X-MP computers. This work established that the giant impact theory was indeed promising andthat a collision of slightly more than a Mars mass with the Earth, with theEarth-Moon angular momentum in the collision, would put almost 2 Moon masses of rockinto orbit, forming a disk of material that is a necessary precursor to theformation of the Moon from much of this rock. Further development of the hydrodynamics code made it possible to do the calculations on fast small computers thatare dedicated to them. .u628bdc6af28086a7424d81101b57c0dc , .u628bdc6af28086a7424d81101b57c0dc .postImageUrl , .u628bdc6af28086a7424d81101b57c0dc .centered-text-area { min-height: 80px; position: relative; } .u628bdc6af28086a7424d81101b57c0dc , .u628bdc6af28086a7424d81101b57c0dc:hover , .u628bdc6af28086a7424d81101b57c0dc:visited , .u628bdc6af28086a7424d81101b57c0dc:active { border:0!important; } .u628bdc6af28086a7424d81101b57c0dc .clearfix:after { content: ""; display: table; clear: both; } .u628bdc6af28086a7424d81101b57c0dc { display: block; transition: background-color 250ms; webkit-transition: background-color 250ms; width: 100%; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #95A5A6; } .u628bdc6af28086a7424d81101b57c0dc:active , .u628bdc6af28086a7424d81101b57c0dc:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #2C3E50; } .u628bdc6af28086a7424d81101b57c0dc .centered-text-area { width: 100%; position: relative ; } .u628bdc6af28086a7424d81101b57c0dc .ctaText { border-bottom: 0 solid #fff; color: #2980B9; font-size: 16px; font-weight: bold; margin: 0; padding: 0; text-decoration: underline; } .u628bdc6af28086a7424d81101b57c0dc .postTitle { color: #FFFFFF; font-size: 16px; font-weight: 600; margin: 0; padding: 0; width: 100%; } .u628bdc6af28086a7424d81101b57c0dc .ctaButton { background-color: #7F8C8D!important; color: #2980B9; border: none; border-radius: 3px; box-shadow: none; font-size: 14px; font-weight: bold; line-height: 26px; moz-border-radius: 3px; text-align: center; text-decoration: none; text-shadow: none; width: 80px; min-height: 80px; background: url(https://artscolumbia.org/wp-content/plugins/intelly-related-posts/assets/images/simple-arrow.png)no-repeat; position: absolute; right: 0; top: 0; } .u628bdc6af28086a7424d81101b57c0dc:hover .ctaButton { background-color: #34495E!important; } .u628bdc6af28086a7424d81101b57c0dc .centered-text { display: table; height: 80px; padding-left : 18px; top: 0; } .u628bdc6af28086a7424d81101b57c0dc .u628bdc6af28086a7424d81101b57c0dc-content { display: table-cell; margin: 0; padding: 0; padding-right: 108px; position: relative; vertical-align: middle; width: 100%; } .u628bdc6af28086a7424d81101b57c0dc:after { content: ""; display: block; clear: both; } READ: Magnanimity in the Iliad Analysis EssaySubsequent calculations have been done at Harvard. The first set ofcalculations was intended to determine whether the revised hydrodynamics code reproducedprevious results (and it did). Subsequent calculations have been directedtoward determining whether successful outcomes are possible with a wider rangeof initial conditions than were first used. The results indicate that theimpactor must approach the Earth with a velocity (at large distances) of not more thanabout 5 kilometers. This restricts the orbit of the impactor to lie near that ofthe Earth. It has also been found that collisions involving larger impactors with morethan the Ea rth-Moon angular momentum can give successful outcomes. This initial condition is reasonable because it is known that the Earth-Moon system haslost angular momentum due to solar tides, but the amount is uncertain. These calculations are still in progress and will probably take 1 or 2 years moreto completeBibliographyGIANT IMPACT THEORY OF THE ORIGIN OF THE MOON, A.G.W. Cameron,Harvard-Smithsonian Center for Astrophysics, Cambridge MA 02138,PLANETARY GEOSCIENCES-1988, NASA SP-498EARTHS ROTATION RATE MAY BE DUE TO EARLY COLLISIONS, Paula Cleggett-Haleim, Michael Mewhinney, Ames Research Center, Mountain View, Calif. RELEASE: 93-012Hartmann, W. K. 1969. Terrestrial, Lunar, and Interplanetary Rock Fragmentation. Hartmann, W. K. 1977. Large Planetesimals in the Early Solar System. 1 Landmarks of the Moon, Microsoft ® Encarta ® 96 Encyclopedia.  © 1993-1995 Microsoft Corporation. All rights reserved. 2 Characteristics of the Moon, Microsoft ® Encarta ® 96 Encyclopedia.  © 1993-1995 Microsoft Corporation. All rights reserved. Category: Science