Heres How Schrodingers Cat Works

Heres How Schrodingers Cat Works Erwin Schrodinger was one of the key figures in quantum physics, even before his famous Schrodingers Cat thought experiment. He had created the quantum wave function, which was now the defining equation of motion in the universe, but the problem is that it expressed all motion in the form of a series of probabilities- something which goes in direct violation to how most scientists of the day (and possibly even today) like to believe about how physical reality operates. Schrodinger himself was one such scientist and he came up with the concept of Schrodingers Cat to illustrate the issues with quantum physics. Lets consider the issues, then, and see how Schrodinger sought to illustrate them through analogy. Quantum Indeterminancy The quantum wave function portrays all physical quantities as a series of quantum states along with a probability of a system being in a given state. Consider a single radioactive atom with a half-life of one hour. According to the quantum physics wave function, after one hour the radioactive atom will be in a state where it is both decayed and not-decayed. Once a measurement of the atom is made, the wave function will collapse into one state, but until then, it will remain as a superposition of the two quantum states. This is a key aspect of the Copenhagen interpretation of quantum physics- its not just that the scientist doesnt know which state its in, but its rather that the physical reality is not determined until the act of measurement takes place. In some unknown way, the very act of observation is what solidifies the situation into one state or another. Until that observation takes place, the physical reality is split between all possibilities. On to the Cat Schrodinger extended this by proposing that a hypothetical cat be placed in a hypothetical box. In the box with the cat we would place a vial of poison gas, which would instantly kill the cat. The vial is hooked up to an apparatus which is wired into a Geiger counter, a device used to detect radiation. The aforementioned radioactive atom is placed near the Geiger counter and left there for exactly one hour. If the atom decays, then the Geiger counter will detect the radiation, break the vial, and kill the cat. If the atom does not decay, then the vial will be intact and the cat will be alive. After the one-hour period, the atom is in a state where it is both decayed and not-decayed. However, given how weve constructed the situation, this means that the vial is both broken and not-broken and, ultimately, according to the Copenhagen interpretation of quantum physics the cat is both dead and alive. Interpretations of Schrodingers Cat Stephen Hawking is famously quoted as saying When I hear about Schrodingers cat, I reach for my gun. This represents the thoughts of many physicists, because there are several aspects about the thought experiment that bring up issues. The biggest problem with the analogy is that quantum physics typically only operates on the microscopic scale of atoms and subatomic particles, not on the macroscopic scale of cats and poison vials. The Copenhagen interpretation states that the act of measuring something causes the quantum wave function to collapse. In this analogy, really, the act of measurement takes place by the Geiger counter. There are scores of interactions along the chain of events- it is impossible to isolate the cat or the separate portions of the system so that it is truly quantum mechanical in nature. By the time the cat itself enters the equation, the measurement has already been made ... a thousand times over, measurements have been made- by the atoms of the Geiger counter, the vial-breaking apparatus, the vial, the poison gas, and the cat itself. Even the atoms of the box are making measurements when you consider that if the cat falls over dead, it will come in contact with different atoms than if it paces anxiously around the box. Whether or not the scientist opens the box is irrelevant, the cat is either alive or dead, not a superposition of the two states. Still, in some strict views of the Copenhagen interpretation, it is actually an observation by a conscious entity which is required. This strict form of the interpretation is generally the minority view among physicists today, although there remains some intriguing argument that the collapse of the quantum wavefunctions may be linked to consciousness. (For a more thorough discussion of the role of consciousness in quantum physics, I suggest Quantum Enigma: Physics Encounters Consciousness by Bruce Rosenblum Fred Kuttner.) Still another interpretation is the Many Worlds Interpretation (MWI) of quantum physics, which proposes that the situation actually branches off into many worlds. In some of these worlds the cat will be dead upon opening the box, in others the cat will be alive. While fascinating to the public, and certainly to science fiction authors, the Many Worlds Interpretation is also a minority view among physicists, though there is no specific evidence for or against it. Edited by Anne Marie Helmenstine, Ph.D.

The Mercury Program essays

The Mercury Program essays This report is going to be based on the NASA Mercury Program. The primary goals of this report is to explain the mission and purpose of the program, to give you an overview of the program, to explain the spacecraft used in the program, and to give flight summaries. Beginning in 1958 and culminating in 1963, Project Mercury was the United States' first man-in-space program. The objectives of the program, which made six manned flights from 1961 to 1963, were clear: To orbit a manned spacecraft around Earth, to investigate man's ability to function in space, and to recover both man and spacecraft safely. These goals and objectives were successfully completed. The true beginning of the effort that would in turn be manned space travel cannot be exactly pinpointed. History tells us that it has been in the minds of people since the beginning of recorded history. One might think that is was in the mind of the first people, but with numerous, strict, guidelines space flight was made a reality in 1961 when Astronaut Alan B. Shepard, Jr. rose into space on the first manned space flight in U.S. history. Although the flight only lasted fifteen (15) minutes and twenty-eight (28) seconds this marked a tremendous milestone in space history, U.S. history and world history. This short flight marked the beginning of a new era. This new era was a tough era but would be one to come to pass no less. The many aspects of this mile-marking program were rigorous. The making and testing of the spacecraft had strict guidelines that had to be followed. The selection process of the noble men that flew in the spacecraft was hard. The selection process started wi th 508 people that were screened. Only 110 men met the minimum requirements and standards. After those men were vigorously interrogated only sixty-nine (69) men arrived in Washington. In March of 1959 the number had decrease to thirty- six (36) men. By the end of March after many test and trials app...

HOW DEVELOPMENT LEADS TO DEMOCRACY BY RONALD INGLEHART AND CHRISTIAN Essay

HOW DEVELOPMENT LEADS TO DEMOCRACY BY RONALD INGLEHART AND CHRISTIAN WELZEL - Essay Example The second is the apparent import-substitution strategies of â€Å"backward nations† such as Cuba, Myanmar, and North Korea which have grown the least in terms of political and economic growth. Finally, in contrast to backward nations, the democratization of South Korea and Taiwan confirm the logical flow of liberal economic policies leading to democratic political awareness to further growth and modernization. One of the more ambiguous arguments posited by the author, which may need further investigation is that correlations do not necessarily mean causality. In fact, in a system of institutions, the argument of endogeneity, that is, what really leads to what is often the case of debate. Is it that modernization causes democracy or democracy causes modernization? Even so, there are so many other variables in a system that can cause democracy or modernization. Finally, it is important to note that modernization, according to the author is a syndrome of social changes linked to industrialization, which penetrate all aspects of life, bringing occupational specialization, urbanization, rising educational levels rising life expectancy, and rapid economic growth. All these seem very promising, especially in the lieu of democratic institutions which promote equal and equitable social

Gay Marriages Paper Essay Example | Topics and Well Written Essays - 750 words

Gay Marriages Paper - Essay Example It is presently unlawful and not recognized in the state of Colorado. On the other hand, laws have been passed to permit elected beneficiaries, which grant some of the human rights of marriage. Generally, no society can stand the sight of people belonging to the same sex forming families. The countries which have recognized gay marriage are Sweden, Argentina, Canada, Spain, Portugal, Belgium, Norway, Netherlands, South Africa and Iceland. The initial gay marriage licenses in the state of Colorado were passed by Clela Rorex in1975. These licenses were later on cancelled by laws that were approved shortly. This topic is extremely interesting to the gay couples in the countries. Same-sex marriage is the blending of two persons of the same sex in a marital bond, by way of complete legal rights and duties allotted to this agreement, by a given authority. Since time immemorial, only heterosexual couples were measured fit for adopting a kid. But these days, same sex couples are also seen en titled for adoption. From the angle of homosexual couples, adoption is an immense chance to raise children. A domestic atmosphere with two parents of opposite sexes is the most appropriate ambiance for the happiness of children. Otherwise, children are likely to be molested by gays, who may even be their foster parents. This puts a very high risk on the lives of small kids who may not be capable to protect themselves from the onslaught of stronger adults. â€Å"Colorado is home to over 13,000 same-sex couples. From 1990 to 2006, the number of same-sex couples in Colorado increased by 648%. Even though so many same-sex couples are living and coming out in Colorado, in 2006 Colorado voters approved an anti-marriage discriminatory constitutional amendment† (Colorado par. 1). Traditionally, marriage has been described as a legal and religious commitment between a woman and man, in addition to the decisive expression of love. So I choose this topic to identify the various reasons for legal constitutionality of gay marriages in Colorado.

100 Words Essay Examples Essay Example for Free

100 Words Essay Examples Essay Essay about Red Nose Day The purpose is to entertain and change lives in the UK and Africa. The money spent to aid young who live on the street and protect people living with domestic abuse. In Africa for vaccines etc. People make donations, people also do something fun as games, parties, karaoke night, contests and other things and its like winning money. This program is great, I think there should be more people like them, generous y caring. This type of action I love. It is best to help and if it is fun and with love is better. 99 words Her Majesty The Queen Buckingham Palace London SW1A 1AA Her Majesty the Queen, My name is Leslie Monserrat Martinez Hernandez, I have 16 years old, Im Mexican and I am student. Im from the state of Hidalgo Mexico but I live in Teotihuacan City of Gods Mexico, I live with my family, my dad, my mom and two younger brothers. Im going to talk about the beautiful place where I live. Teotihuacan is an archaeological site as are the beautiful Pyramids of the Sun and Moon and the Teotihuacan was one of the most important and ancient cultures of Mexico. The food is very tasty, very friendly people and is a quiet, well this Animal Kingdom a great zoo where the animals are free. Teotihuacan is a charming town. I say goodbye without thanking your attention. Greetings and kisses from Mexico. Essay about The British Museum The museum is free, open daily 10.00-17.30 Friday until 20.30. In this museum one of the most important objects of the museum is the Cyrus Cylinder. This museum is very interesting and very important for the United Kingdom You can reach the museum by car, bicycle, subway and bus. The purpose of the museum is to share his collection with the world. People can donate items and museum receives them in order to make the collection bigger. I imagine this museum is very cute and very interesting because it has a variety of information and objects with great meaning. 99 words Essay about Poppy Day Remembrance Day also known as Poppy Day, because it is traditional to wear a poppy artificial. Sold by the Royal British Legion a group dedicated to helping veterans. It is a remembrance of those who died in the war so that people were free, some people prefer to wear a poppy on the left side above his heart. The first day of Poppy Day was in Britain on November 11th, 1921. This commemoration is very beautiful and interesting because it is a nice touch to remind the people who gave their lives in the war. It is an example of love, respect and solidarity. 100 words Essay about St. Patrick’s Day St. Patricks Day is celebrated annually on March 17 to commemorate the death of St. Patrick, patron saint of Ireland. It is a national holiday in Ireland. Many people celebrate the festival by dressing green with Irish food, drink and parades. This festival demonstrates the creativity, professionalism and sophistication of Ireland. The origin of this holiday is in commemoration of the arrival of Christianity to Ireland, one of the traditions of St. Patricks shamrock. This custom is very funny because I think people are going green and all the country of going green and other things that represent this special day. 100 words Essay about Millennium Stadium Millennium Stadium is the national stadium of Wales, where rugby and soccer practice. It is located in the city of Cardiff, capital of Wales, in the UK. There may be 74,500 people. The total construction cost of the stadium was  £ 121 million and was built by Laing in 1999. Opened in June 1999, also the second largest stadium in the world. Its a great stadium, cool and important because it is the largest stadium second the world but to me the history of this stadium did not like, I like football but it is important for me to know him. 100 words

The Need for Available Contraceptives Essay -- Birth Control Children

The Need for Available Contraceptives With each miraculous birth the world’s population heads further towards destruction due to overpopulation. Globally, the population is increasing at a rate of 1 billion every decade, a rate that mankind has never seen before (Bongaarts). Most of this huge increase in population is in developing countries where the population is currently 4.3 billion and is expected to more than double within the next hundred years (Bongaarts). Considering that the world’s resources are already being stretched to sustain the current population a high birth rate will be catastrophic if if is allowed to continue. This population boom must be stopped in order to ensure that future generations can experience the standards of living we enjoy today. Though the high birth rate is mainly due to developing countries, all of humanity must work together to overcome it. Hope for the future is only possible if the developed world supports the effort with funds and resources. The key weap on in this battle is birth control, which must be spread globally to those who lack means of controlling their fertility. Although one little child does not put a significant stress on the world’s resources, the number of children currently being born will cause irreversible and unreasonable demands on the earth. President of the Population Institute Werner Fornos warns, â€Å" Population growth is a leading contributor to environmental degradation† (â€Å"Keynote address†). Environmental degradation happens and will continue to happen as we pollute the earth, contribute to global warming, create landfills, and consume our precious and often nonrenewable resources (Bongaarts). Realizing the drastic damage our population h... ...ption and Induced Abortion in Rural Ghana.† Tropical Medicine & International Health 7 (2002): 708-716. Hartmann, Betsy. â€Å"Population Control I: Birth of an Ideology.† International journal of health services 27 (1997): 523-540. â€Å"Keynote address.† Boston College Environmental Affairs Law Review 21 (1994): 251-256. â€Å"Nothing is unthinkable.† The Lancet 336 (1990): 659(3). Rosenfield, Allan. â€Å"The Fifth Freedom Revisited: I, Background and Existing Programmes.† The Lancet 336 (1990): 1227-1232. Sharpless, John. â€Å"World population Growth, Family Planning, and American Foreign Policy.† Journal of Policy History 7 (1995): 72-102. United Nations Secretariat. Dept. of Economic and Social Affairs. Population Division. Fertility, Contraception and Population Policies. 25 April 2003. â€Å"Whose future? Whose world?† The Lancet 342 (1993): 1125-1127.

Horror Films

Movies have been growing increasingly more explicit for years. Horror films are no longer based on a cleverly written script with lots of twists and turns, but rather how graphic and twisted the images are throughout the movie. Horror films are appealing to viewers for various reasons. In fact, according to some film critics, â€Å"good† horror films have particular characteristics. Maggie McCutcheon in â€Å"Too Disturbing, Too Shocking,† According to Olson, people particularly enjoy experiencing the end of their fear and terror.Once the fear and terror have ended, people feel better. And, according to Stephen King in â€Å"Why We Crave Horror Movies,† horror films can help us confront our fears, and help us deal with the â€Å"bad side† of ourselves. Given the wide variety of characteristics â€Å"good â€Å"horror films have, this paper will address two specific characteristics of horror films. One characteristic is visual images/suggestions that symb olize our fears. Another characteristic is vitality or strength of source of horror.In order to analyze the characteristics of horror films, I viewed Poltergeist, an early 1980s film about a family being haunted by earthbound spirits, and I also read four definitive articles about horror films. One characteristic of a good horror films is visual images/suggestions that symbolize our fears. Stanley J. Solomon in â€Å"The Nightmare World† claims the cinema of horror concretizes this nightmare world- our abstract fears of destruction and death.The Midnight visits of vampires, the laboratory induced reincarnations, the skull deformities, the murders in the fog – these visual images of the genre may be the symbols of our fears rather than the psychological source of them, but the terror without a body is terror deprived of a means of menacing us. The movie Poltergeist certainly has this characteristic. Examples of visual images from the movie is a scary clown that looks me an , sitting in the chair and has the ability to move , goes under Robbie’s bed.A hand reaching out of the TV also the gateway for the beast to reach Carol Anne, parents later communicate with Carol Anne through the TV. Another image is a Dead tree outside the house making scary shadows every time it storms and also tries to eat Robbie. And in the closet there is a monster that takes Carol Anne and at the end of the movie the closet turns in to a Giant throat with a serpent coming out of it sucking the house in to the earth. So clearly the viewers can see the characteristic of isual images in the horror film Poltergeist. Another characteristic of a horror film is Vitality or strength of source of horror. Stanley J. Solomon in â€Å"The Nightmare World† claims If the depiction of archetypal fears is one aspect of the genre, the process whereby these fears become dramatic incidents in a film reveals at least two other genre traits: the degree of unpreparedness on the par t of the endangered victim, and the vitality or strength of the source of horror. The movie Poltergeist certainly has this characteristic.Some examples are a normal looking neighborhood, Tweety dies , Steven has a remote control war with his neighbor , Carol Anne answers the TV people questions, Diane mentions the swimming pool what if Carol Anne falls in, the way the clown looks when its lighting in the kids room and when the Tree and storm clouds look and the hand reaching out from the TV, but only Carol Anne sees it- rest of the family thinks it’s a earthquake and the chairs stacked up, out from the table , and Robbie utensils are bent.So you can definitely tell that Poltergeist has the characteristic in the film. In conclusion Poltergeist clearly reflects the characteristics of having visual images/suggestions that symbolize our fears and of allowing viewers a degree of unpreparedness on the part of the endangered victim. Based on my evaluation, I believe Poltergeist is a very effective horror film.In fact, according to Tim Dirks article states that horror films are generally set in spooky old mansions or fog shrouded, dark locales, with â€Å"unknown,† supernatural or grotesque creatures, ranging from vampires, madmen, devils unfriendly ghost, monsters, even the unseen, diabolical presence of evil. This is the case with Poltergeist, and I think many people still like this horror film till this day.