How Do Steam Engines Work

Heat water to its boiling point and it changes from being a liquid to become the gas or water vapor we know as steam. When water becomes steam its volume increases about 1,600 times, that expansion is full of energy. An engine is a machine that converts energy into mechanical force or motion that can turn pistons and wheels. The purpose of an engine is to provide power, a steam engine provides mechanical power by using the energy of steam. Steam engines were the first successful engines invented and were the driving force behind the industrial revolution. They have been used to power the first trains, ships, factories, and even cars. And while steam engines were definitely important in the past, they also now have a new future in supplying us with power with geothermal energy sources. How Steam Engines Work To understand a basic steam engine, lets take the example of the steam engine found in an old steam locomotive like the one depicted. The basic parts of the steam engine in a locomotive would be a boiler, slide valve, cylinder, steam reservoir, piston, and a drive wheel. In the boiler, there would be a firebox where coal would be shoveled into. The coal would be kept burning at a very high temperature and used to heat the boiler to boil water producing high-pressure steam. The high-pressure steam expands and exits the boiler via steam pipes into the steam reservoir.  The steam is then controlled by a slide valve to move into a cylinder to push the piston. The pressure of the steam energy pushing the piston turns the drive wheel in a circle, creating motion for the locomotive. History of Steam Engines Humans have been aware of the power of steam for centuries. Greek engineer, Hero of Alexandria (circa 100 AD), experimented with steam and invented the aeolipile, the first but very crude steam engine. The aeolipile was a metal sphere mounted on top of a boiling water kettle. The steam traveled through pipes to the sphere. Two L-shaped tubes on opposite sides of the sphere released the steam, which gave a thrust to the sphere that caused it to rotate. However, Hero never realized the potential of the aeolipile, and centuries were to pass before a practical steam engine would be invented. In 1698, English engineer, Thomas Savery patented the first crude steam engine. Savery used his invention to pump water out of a coal mine. In 1712, English engineer and blacksmith, Thomas Newcomen invented the atmospheric steam engine. The purpose of Newcomens steam engine was also to remove water from mines. In 1765, a Scottish engineer, James Watt began studying Thomas Newcomens  steam engine and invented an improved version. It was Watts engine that was the first to have a rotary motion. James Watts design was the one that succeeded and the use of steam engines became widespread. Steam engines had a profound effect on the history of transportation. By the late 1700s, inventors realized that steam engines could power boats  and the first commercially successful steamship was invented by George Stephenson. After 1900, gasoline and diesel internal combustion engines began replacing the steam piston engines. However, steam engines have reappeared in the last twenty years. Steam Engines Today It may be surprising to know that 95 percent of nuclear power plants use steam engines to generate power. Yes, the radioactive fuel rods in a nuclear power plant are used just like coal in a steam locomotive to boil water and create steam energy. However, the disposal of spent radioactive fuel rods, the vulnerability of the nuclear power plants to earthquakes and other issues leaves the public and the environment at great risk. Geothermal power is power generated using steam produced by heat emanating from the molten core of the earth. Geothermal power plants are relatively green technology. Kaldara Green Energy, a Norwegian/Icelandic manufacturer of geothermal electrical power production equipment, has been the major innovator in the field. Solar thermal power plants can also use steam turbines to generate their power.

The Eucharist Essay examples - 1165 Words

Eucharist is the central rite of the Christian religion, in which bread and wine are consecrated by an ordained minister and consumed by the minister and members of the congregation in obedience to Jesus command at the Last Supper, â€Å"Do this in remembrance of me.† In the Orthodox and Roman Catholic churches, and in the Anglican, Lutheran, and many other Protestant churches, it is regarded as a sacrament, which both symbolizes and effects the union of Christ with the faithful. Baptists and others refer to Holy Communion as an â€Å"institution,† rather than a sacrament, emphasizing obedience to a commandment. Traditionally, Jesus command to his disciples at the Last Supper to eat the bread and drink the wine â€Å"in remembrance of me† constitutes†¦show more content†¦During the Middle Ages Scholastic philosophers under the influence of Aristotle developed a more elaborate doctrine of the Eucharist. Aristotle taught that earthly things possessed accidents perceptible to the senses, and substance, their essential reality, known by the mind. According to Scholastic speculation, the substance of the Eucharistic bread is, by the power of God, wholly transformed into the body of Christ. This view of the presence of Christ, called transubstantiation, was most elaborately formulated by the 13th-century Italian theologian St. Thomas Aquinas. It has been the official teaching of the Roman Catholic church since the Middle Ages, although the Council of Trent, which reasserted the doctrine against the Protestant reformers in the 16th century, did not include any philosophical speculat ion in its statement, asserting simply that an actual change occurred in the bread and wine. In the 16th century Protestant reformers offered several alternative interpretations of the Eucharist. Martin Luther taught that Christ is present â€Å"in, with, and under† the elements. The Swiss reformer Huldreich Zwingli denied any real connection between the bread and wine and the body and blood of Christ. He believed that at the celebration of the Supper, which recalls to worshipers the words andShow MoreRelatedThe Eucharist839 Words   |  4 PagesThe Eucharist (Otherwise known as the Holy Communion or the Blessed Sacrament) is a Catholic sacrament considered to be the apex of Christianity. While some Catholics and different branches of the English Church believe that this bread and wine are transformed into the literal blood and body of Christ, others believe that it is a simple expression of faith. It is considered to be the very essence of love that binds us to the savior; and it is this teaching of love that inspires the Catholic viewRead MoreHistory of the Euchari st713 Words   |  3 PagesHistory of the Eucharist The Sacrament of Eucharist is the most frequently received Sacraments in the Catholic Church. The matter in the Sacrament of Eucharist is the bread and wine, which changes into the body and blood of Jesus Christ. The Sacrament of Eucharist is dated in the Bible as far back to the Old Testament, indirectly as the Israelites flee from Egypt in the desert, and God gives them manna to eat. This happens multiple times while the Israelites are searching forRead MoreThe Practice Of The Eucharist1140 Words   |  5 PagesPart A 1. The practice of the Eucharist in the Catholic Church is usually called the Liturgy of the Eucharist, Holy Communion or the Lords supper. The Eucharist usually occurs near the end of the mass, firstly it begins with the preparation of the gifts and the altar, and once this has been done volunteers of the community bring forward the bread and the wine to the Priest at the Altar. Then the priest blesses the bread and wine. After that the priest breaks the bread and says â€Å"Take this all ofRead MoreWhat is The Eucharist?1467 Words   |  6 PagesThe Eucharist is a sacrament that gives expression to our faith. Sacraments are a sign of our intimate unity with God. There is a rich, deep connection between what the Church is and what sacraments are that is profoundly evident in the celebration of the Eucharist. God’s presence is mediated by the Church and its’ sacraments â€Å"to an unseen reality and †¦ [makes] that reality â€Å"present† to us.† â€Å"The church is impossible without the Eucharist† , the centre of our Christian lives. Memorial is an integralRead MoreImportance of Eucharist620 Words   |  3 PagesImportance of the Eucharist Receiving the Eucharist is one of the most important things we can do as a catholic. Holy Communion is the most important of all the sacraments. It completes the Sacraments of Initiation. The bread and wine we receive at communion is the body and blood of Jesus. It becomes the bread and body of Jesus through Transubstantiation. Transubstantiation is the conversion of the substance of the Eucharistic elements into the body and blood of Christ at consecration, only theRead MoreThe Eucharist Of The Catholic Church883 Words   |  4 PagesThe Eucharist according to Catechism of the Catholic Church The Eucharist is one of the Seven Sacraments of the Catholic faith. For some it is the most important sacrament of the faith. What is the Catechism of the Catholic Church? What does it say about the Eucharist? This is what will be discussed during this paper. To start off the answering the first question, the Catechism is a according to the website uscatholic.org it is a â€Å"compendium of all Catholic doctrine regarding both faith and moralsRead MoreThe Eucharist Sacrament, Signs Symbols1632 Words   |  7 PagesThe Eucharist Sacrament, Signs Symbols The seven sacraments are ceremonies that point to what is sacred, significant and important for Christians. They are special occasions for experiencing God’s saving presence. The seven formal sacraments are identified as; baptism, confirmation, Eucharist, reconciliation, anointing, holy orders and marriage. Sacraments entail symbols and signs. Symbols are objects or patterns that are used to represent an invisible reality. Each symbol and sign work togetherRead MoreThe Eucharist Is The Source And Summit Of The Christian Life2076 Words   |  9 Pages â€Å"The Eucharist is the source and summit of the Christian life.† All Catholics respect and signify the importance and the epic role of the Holy Eucharist in creating and building a strong relationship between God and humankind. The process of growth and development occurs for every human being, but this process is not just about the growth of the mundane body, but the spiritual body as well. A person cannot live more than one week without any food, and so for the spirit, it necessitates the HeavenlyRead More Fasting and The Eucharist: Catholic Participation in the Sacrifice of Christ3264 Words   |  14 PagesFasting and The Eucharist: Catholic Participation in the Sacrifice of Christ Christ, as the ultimate sacrifice in Christianity, gave his own life for the benefit of others. His self-sacrifice continues to this day to be celebrated in the Catholic Mass. Through communion, or receiving the Eucharist, one is able to actively partake of the fruits of that sacrifice. But how does one follow Jesus’ example? One surely cannot strive for the same kind of physical death that Jesus experienced. ThusRead MoreOrigins Of The Eucharist With A Focus On The New Testament And The Jewish Background1382 Words   |  6 Pagesof the Eucharist with a focus on the New Testament and the Jewish background, it briefly summaries Bradshaw’s critic of Dom Gregory Dix’s theory of early Eucharistic practices. It then examines Dom Gregory Dix’s theory of the fourfold shape of the Eucharist. It uses Justin Martyr’s writings to provide evidence to support Dom Gregory Dix’s fourfold shape, and finally, it examines Dom Gregory Dix’s fourfol d shape theory using Bradshaw’s contribution to the field. Origins of the Eucharist All the

Nurses Free Essays

(1) According to the Australian Indigenous Psychologists Association (2010): ‘The term cultural competency refers to a long-term, developmental process that moves beyond cultural awareness (the knowledge about Aboriginal and Torres Strait Islander people primarily gained through media resources and workshops) and cultural sensitivity (knowledge as well as some level of direct experience with Aboriginal and Torres Strait Islander people). Cultural competency emphasizes the idea of effectively operating in different cultural contexts: knowledge, sensitivity, and awareness programs o not include this concept. Cultural competence aims to reduce barriers to high quality care experienced by Indigenous people and is directly linked to improving social and emotional wellbeing and mental health outcomes. We will write a custom essay sample on Nurses or any similar topic only for you Order Now ’ Cultural Competence What is cultural competence? Cultural competence is the ability to interact effectively with people across different cultures. It has four components: * Awareness of one’s own cultural worldview (assumptions, biases) * A positive attitude towards cultural differences * Knowledge of different cultural practices and worldviews * Cross-cultural communication skills What is cultural competence in health care? Culturally competent health care providers provide the best possible care for all their clients and work in the most productive way with all their colleagues. Everyone has a culture Cultural competence begins with the recognition that we are all born, raised and living in social, educational and organisational cultures. These cultures shape our assumptions, beliefs, values and behaviours. When we interact with others, the similarities and differences between our cultural expectations often make the interaction both more interesting, and more challenging. In a health setting, these challenges must be met if we are to provide equitable, appropriate and accessible services to all our clients. Competent practitioners are culturally competent A person who is culturally competent can communicate sensitively and effectively with people who have different languages, cultures, religions, genders, ethnicities, disabilities, ages and sexualities. Culturally competent health staff strive to provide services that are consistent with the clients’ needs and values firstly by acknowledging them, and secondly by, wherever possible, responding to them appropriately. Health care practitioners need to develop a broad repertoire of skills, knowledge, attitudes, perspectives and practices which they can use to enhance their cultural competence and direct their relationships with clients and colleagues. Cultural competence is about organisational competence It is very difficult to operate as a culturally competent practitioner without organisational support. SESIH is strongly committed to equality for clients and staff, and continues its commitment to the policies and principles of multicultural health. Benefits of a culturally competent workforce Lack of cultural competence impacts on both clients and staff. Clients who feel that their concerns have not been understood, who feel they have been dismissed or ignored, or who have not received optimum services because of their cultural background or ethnicity or language will find it hard to develop a sense of trust in a practitioner or a service. Culturally competent health staff build trust and respect which leads to increased client satisfaction and improved health outcomes such as a better use of the staff and clients’ time, more accurate information, and more effective and acceptable outcomes for staff and clients. Cultural competence benefits everyone. Why is culture so important in health care? Because health care is cultural. Although the scientific bases for medical treatment and care is considered ‘objective’, the way that we choose and use health services, whether we accept a diagnosis, how we decide if we will continue with a particular medical treatment, and the sorts of questions we ask health staff are all culturally influenced. Staff need to recognise the beliefs and values that affect our health decisions and take account of them when treating us (2) How to cite Nurses, Essay examples

Letting Go free essay sample

In each and every one of us, there lies a fear. There are lots of fears in this life but what were talking about is a fear that dwells inside of us, where mostly we do not tend to reveal it outside. That fear has the potential to eat us up slowly from the inside till it consumes our whole being. This fear is there in each and every single human being no matter how he strong he may be both on the core and the outside. These fears are but many and differ from person to person but I choose to be specific here and that is the fear of letting go.People come and people go in our lives but what hurts the most than letting go of the one you love the most in your life, the one whom you once chose to never leave through thick and thin. We will write a custom essay sample on Letting Go or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page People hurt us from time to time. Of course thats Life, No doubt about it, but HURT sometime can leave wounds in our hearts where scars left never seem to fade away. There are some things that time does not seem to mend. Hard to accept but true. But heres the funny part, No matter how or to what extent these people hurt you, yet you still love them.You still chose to be patient. One of the Laws of Nature is the Limits of Tolerance. There is a certain climax where one can bear a certain kind of pressure. When the limit of tolerance has been reached, the nature provides a feedback mechanism. We rise from dust, nature itself, and back to dust. These laws dwell In all of us. Thats when we choose to stay away and give up every virtue of love. Yes. Maybe weve had our closures with them. Maybe weve given a good ending. But the worst comes into the picture when we still think of changing the past.Still wishing sometimes you were a better person, a stronger person to bear hurtful things that the one you love does. Wishing you had done things differently. Wishing had they only changed and what not. This Is when that fear, the fear of letting go grows In our hearts. It consumes our thoughts Like a fire and rages our mind. It freezes our heart cold and turns It Like a stone. Heres when we really make a real CHOICE. The choice to let go forever. To stop worrying what the consequences of our actions could be.This fear Is, In fact, against the attitude of love (which always bears and stays). Life Is governed by choices and the choice to let go of someone Is the hardest In life. It questions the attitude of love as In Yes I would bear, but even If I did, would It be worth It? This question Is, again hard to accept, but a fear of letting go. But Life never gives us many choices and the beauty of this fear Is that the questions that It puts In our mind are only answered sometimes by Glenn Into the fear Itself and choosing to let go because sometimes that Is the only way we can find out.Kampuchea Deletion By Kampuchea mechanism. We rise from dust, nature itself, and back to dust. These laws dwell in all Maybe weve had our closures with them. Maybe weve given a good ending. But the only changed and what not. This is when that fear, the fear of letting go grows in our hearts. It consumes our thoughts like a fire and rages our mind. It freezes our heart cold and turns it like a stone. Heres when we really make a real CHOICE. The choice This fear is, in fact, against the attitude of love (which always bears and stays).Life is governed by choices and the choice to let go of someone is the hardest in life. It questions the attitude of love as in miss I would bear, but even if I did, would it be worth it? This question is, again hard to accept, but a fear of letting go. But Life never gives us many choices and the beauty of this fear is that the questions that it puts in our mind are only answered sometimes by giving into the fear itself and choosing to let go because sometimes that is the only way we can find out.