Boiling Definition in Chemistry

Boiling Definition in Chemistry Boiling is defined as  a phase transition from the liquid state to the gas state, usually occurring when a liquid is heated to its boiling point. At the boiling point, the vapor pressure of the liquid is the same as the external pressure acting upon its surface. Also Known As:  Two other words for boiling are  ebullition and vaporization. Boiling Example A good example of boiling is seen when water is heated until it forms steam. The boiling point of  fresh water at sea level  is  212 °F (100 °C).  The bubbles that form in the water contain the vapor phase of water, which is steam. The bubbles expand as they get closer to the surface because there is less pressure acting upon them. Boiling Versus Evaporation In the process of evaporation, particles may transition from the liquid phase to the gas phase. However, boiling and evaporation do not mean the same thing. Boiling occurs throughout the volume of a liquid, while evaporation only occurs at the surface interface between the liquid and its surroundings. The bubbles that form during boiling do not form during evaporation. In evaporation, the liquid molecules have different kinetic energy values from one another.

Oscar Micheaux essays

Oscar Micheaux essays In the years of race cinema, there was only one black man with the determination to write, produce, direct, finance and distribute his own films. That man was Oscar Micheaux. Micheaux was the first black to direct a silent feature, and the first to direct a talkie feature. In so many ways, Micheaux was the D.W. Griffith of race cinema. Many of Micheauxs films exhibited aesthetic techniques originally used by D.W. Griffith, particularly in Griffiths racial movie The Birth of A Nation (1915). On the other hand, many of Micheauxs films also show improvements on Griffiths techniques and responses to his racially driven movie. Even though Oscar Micheaux was the first of his kind, he did not create a new movie sub-genre; but was able to show the power of the black movie maker by being the first black to make films that were aesthetically competitive with white filmmakers, and by making films that contradicted films such as Birth of a Nation by showing the power of black filmmakers in r esponding to mainstream cinema. Existing not only as an artist in the film industry, Griffith was a business man as well. Known for spending unusually large amounts of money on films such as Birth of a Nation (1915) and Hearts of the World (1918) and then realizes that, while the returns from such a subject are slowly accruing, he must turn out a few pot-boilers to keep the wolf from the door. (Milne 79) Therefore, Griffith produced many smaller scale productions films such as The Great Love (1918) and The Girl Who Stayed at Home (1919). Similarly, having to produce his own films through his own production company, Micheaux was also very much a business man. As stated, raising funds knocking on doors, Micheax also produced smaller films such as The Gunsaulus Mystery (1921) and The Hypocrite (1922) to pay the bills while he worked on his larger scale productions (even though they were shoe-string budgets). ...

Autobiograhy Essay Example | Topics and Well Written Essays - 250 words

Autobiograhy - Essay Example In this case, this was a situation when one of his subordinates arrived late for work that morning, as he tried to explain the manager shouted at him. However, this agitated the subordinate given since it was embracing to him since it was in the midst of other employees. The argument escalated, though it was resolved by assistant manager who had conflict management skills. The other case involved a conflict between groups during a project, whereby they were unable to agree on ways to assign themselves to various tasks. In fact, this had a significant impact on the project to an extent that it would have hampered the process of undertaking it. Nonetheless, the team leader of these groups had a conflict management skills and he was able to deal with the differences between these groups in a way that would facilitated their progress in accordance to their expectations. In conclusion, the cases that have been presented signify that importance of conflict management skill in working

Reproductive Rights (M3C) Ethics in Health Care Essay

Reproductive Rights (M3C) Ethics in Health Care - Essay Example The techniques of assisted reproduction are on the peak now and many couples opt for this method of conception. But many questions have been raised on this technique that whether it is ethically justified or not. It is argued by liberals that it is an option that lays on the shoulders of the parents and since everyone has the right to choose for their life, this technique is justified. On the other hand, there are arguments against this technique which argue that the children who are brought into this world are done so without their consent and they have a higher risk of acquiring diseases and neurological issues. Thus a question arises that is a doctor correct when carrying out this technique of assisted reproduction. Researches have served to prove the fact that invitroferilization (IVF) techniques carry with them many harms and pose many threats for the newborn infant. It is seen that these children who are born with the assistive reproductive techniques have a higher risks of hav ing neurological pathologies and thus life hampering conditions. It is argued that the health of the children is above all such techniques and hence it should be prohibited and not carried out by doctors until and unless much research is done in this field and it is proved to be free of side effects.

Perspective on marketings role within your organisation Essay - 1

Perspective on marketings role within your organisation - Essay Example Sales forecasts generated by the marketing department of the business will also be important in influencing budgets and allocation of human resources within the company. In addition, the marketing function also supports research and development function of the organization in coming up with products and services that meet the needs of the customers. Furthermore, the role of marketing as a function remains a critical aspect in understanding the core values of an organization and the attitudes of an organization towards the delivery of goods and services to its customers. In other words, marketing function plays a significant role in situating how the performance of an organization’s new product in the market, customer relationship practices, and financial base are perceived externally (Moorman & Rust, 1999). This is because it is a business area of an organization that most frequently interacts with customers and the public in general, and consequently, shapes the general perception of the public about the organization, its activities, and values. For instance, customers may see an organization as dynamic and innovative based on its promotional and advertising messages that focus on new products. In addition, a firm’s stated marketing objectives will inform customers and the public about the firm’s performan ce on customer satisfaction, market share, and /or

Questions Essay Example for Free

Questions Essay 1.) It cannot be denied that the Catholic Church greatly affected the development of the Science of Astronomy or it would be more appropriate to say that the Catholic Church hinders the development of Astronomy. In the early times, the Church persecuted those who are trying to seek the reality about the universe, the outer space and those found in it such as Galileo, Tycho Brahe and the likes.   Because of the power of the Church at that time, many who seek the truth in the field of astronomy had been de-motivated. There are only few persons who were willing to oppose the church and to continue their work in the field of astronomy. Others, after finding something that contradict the views and beliefs of the Church, kept their findings for themselves, not letting the world of their discoveries because of the fear of persecution. As a result, there had been few published books or articles regarding developments in the field of astronomy that contradicts the view of the church. Thus, the church really hinders the development of astronomy because it contradicts their beliefs and teachings and was creating doubts in the perfection of the universe. It took a very long time to be able to accept developments and new knowledge in astronomy. 2.) Tides refer to the alternating rise and fall of sea level within a day. What causes the sea level to change? It is actually the gravitational attraction of the sun and moon that cause waters of the ocean to swell and recede at different parts of the earth. The earth and the moon are two great masses that have a significant gravitational pull on each other. This keeps the moon in orbit around the earth, and it is also what causes tides to occur in the ocean. The fact that there are two tide cycles a day instead of just one can be cogently explained. Although we commonly think of the moon as revolving around the Earth they both revolve around their common center of gravity. The revolution of the earth and the moon about their own center of gravity counterbalanced the gravitational attraction between them. This balance in between the centrifugal force and the gravitational force between the earth and the moon appear exactly at their centers, in the center of the earth and the moon. The earth experiences gravitational and centrifugal forces resulting in the earth’s water to assume ellipsoidal. As the earth turns upon its own axis in about 24 hours, a point on the earth moves through areas with these different forces acting on it. In one rotation (one day), a point on earth travels from an area of high tide, where the earth’s water is being pulled outward, to an area of low tide where the earth’s water is being pulled inward, trough another area of high tide which is the opposite pull to another area of low tide. Then it will return to its point of origin at high tide. Thus, two high tides and low tides can be observed instead of just one in a day. 3.)  Johannes Kepler was born in Wurttemberg in 1571 and died in 1630. He received an excellent and wide-ranging education in Lutheran Schools and at the University of Tubingen. He hoped to follow a carrier in the church, but he wrote paper on an astronomical subject that came to the attention of Tycho Brahe, now at Prague, and Tycho invited the young man to join him as his assistant. After much soul searching, Kepler accepted, and when Tycho died the next year, in 1601, Kepler was appointed imperial mathematician in his place and inherited Tycho’s large body of accurate astronomical observations. Kepler’s greatest contribution was a set of three laws of planetary motion that solved the problem of epicycles and eccentric orbits once and for all. The first of the new laws made a substantial change in the Aristotelian system, for it asserted that planetary motion is not uniformly circular. The planets do not travel in eccentric circles around the sun, but in ellipses, with the sun at one of the two foci of the ellipse. Kepler’s ellipses were very close to circles, which explained why the previous assumption of circular orbits had adequately explained the phenomena as long as observations remained relatively inaccurate. The new assumption was correct within the limits of observational accuracy of the time and required no further adjustments, no eccentricities, no epicycles, and no tricks of any kind. Kepler’s second law of planetary motion asserted that a radius vector joining a planet to the sun sweeps out equal areas in equal time. What this mean is that in a certain time, a planet will travel more quickly along its orbit when it is closer to the sun than when it is farther away from it. This brilliant insight, a major inspiration to Newton, applies to all bodies moving in fields of force, not just planets. It explained most of the discrepancies between astronomical theory and observation. The third law asserted a mathematical relation between the periods of revolution and of the planets and their distance from the sun. Discovering this law was a remarkable achievement considering the primitive instruments Kepler had at his proposal. Kepler spent many years not only advancing his ideas about these laws and preparing Tycho’s tables of observation for publication, but also mulling over what he recognized as the great remaining unsolved problem of planetary motion: the motivation whereby the planets revolved around the sun. What holds the planets in their orbits and what drives them ever forward.

The Raga System Essay -- essays research papers

Music is an expression of inner feelings through tones (swar) and rhythm (taal). These swars and taals are combined so that they are pleasing to the ear. Music is sound created from the ideas and emotions of man. When these ideas are expressed through the voice in a rhythmic and appealing sound, music is born. Music in its true form controls human activity and is thus the source of attaining pleasure and salvation. At the base of Indian Classical music lies an appreciation for, and an emphasis on creating sound with aesthetic appeal. This is achieved through Raga or melody. In Brihaddeshi, Matang defines raga as â€Å"that attractive combination of notes which pleases the mind†. That this sound be attractive and pleasing is of extreme importance. Because music is so closely linked to human emotion, it is important that it is written and performed so as to truly interpret and convey the emotion and beauty of the melody. To ensure that this is done successfully, there are some guidelines for Indian Classical musicians to follow to ensure an effective interpretation and display of their art. The system of raga in Hindusthani Classical music is both complex and sophisticated, using particular elements within strict guidelines to attain a pleasing and beautiful sound. In addition to the aesthetic aspect, a raga is also distinctive in form. These two aspects are inextricably bound together and are used in a complementary manner. In Hindusthani Classical music, ragas have been classified according to their form under ten thaats. The ten thaats under which all ragas are classified have derived from the twelve notes used in Hindusthani Classical music. A thaat is the ascending scale from which a raga is created. The ten thaats are: Kalyan, Bilawal, Khamaj, Bhairav, Poorvi, Maarva, Kafi, Asawari, Bhairavi and Todi. A thaat is named after the most prominent raga created from it. Ragas are also classified by the number of notes used in their ascent and descent. Two ragas written from the same thaat will comprise the same notes, however, the possibilities of development are limitless. Thus, each raga is a unique expression of an artist’s mind. In creating a raga, a musician must adhere to several guidelines, and must have an understanding of the es sential elements or lakshans which comprise a raga. These are: 1.  Ã‚  Ã‚  Ã‚  Ã‚  A raga must possess at least five... .... Use of taans shows the singer’s talent and creative power. When presented in its truest form, music has the power to affect human emotion. Hindusthani classical music is rooted in this belief. Some believe that music is an interesting part of natural philosophy that explains the causes and properties of sound. Music is believed to be present in every living and non-living thing. It is manifest through the art of raga. Raga or melody is, above all, an aesthetically pleasing sound. To create it, a musician must follow several guidelines and adhere to a strict framework vis-à  -vis form. A musician must also have as his or her aim, to incite a particular emotion in the listener’s mind. In interpreting a raga, a singer must understand these emotions and try to bring them out using the voice. He or she must also practice singing the unique note combinations for many hours. The system is complex, and it takes much practice and deliberation to successfully render a raga – sometimes many years. Once both musician and singer follow the rules laid down in the earlier texts, a raga can be truly beautiful and as Indian classical musicians believe, capable of attaining pleasure and salvation.