This paper keenly discusses how refrigerator works as well as its history and associated design processes. Before the invention of the modern refrigerator, individuals used ice or snow to cool their food. One of the most known pioneers of the modern refrigerator was William Cullen. In 1748, Cullen invented the first refrigeration at the Glasgow University. Similarly, Oliver Evans, a renowned American inventor also contributed in the development of the refrigeration by inventing the vapor-compression refrigeration that was mostly used in 1805. The aim of this machine was to remove heat from substances by the process of recycling vaporized refrigerant. Another contributor in the early development of refrigerator was Jacob Evans. Through the use of vapor-compression, Evans invented the first refrigerator after making various improvements on Oliver designs. As the demand for the refrigeration increased, various scientists and doctors introduced other aspects that were focused at improving the refrigeration process. In 1913, Fred Wolf, introduced the refrigerators that were used in homes. This was followed by the introduction of a refrigeration unit in 1914 by Nathaniel, a well known engineer who was based in Michigan. In 1927, a refrigerator by the name Monitor-Top was introduced. Based on its improved design and effectiveness in storing food, Monitor-Top attracted high demand especially in US market. The technical improvements that occurred in refrigeration after the World War II led to the development of more efficient refrigerators in 1960s and 1970s. As the technology improves, modern refrigerators that stores food for a longer time have been introduced in the market. Another definition of refrigeration is cooling an item to a particular temperature that is usually lower that the room temperature where the refrigerator is situated. Apart from making the stored items cooler, refrigerator helps in halting the process of decaying that may take process due to chemical process (Balmer, 2011). In the modern societies, refrigerators are used in various ways. One of the most significant uses of refrigerators is storage. As mentioned earlier, before the invention of refrigeration food was stored under water. Even though this was effective method of storage, the lifespan of the food was not for a long time. After the invention of the refrigerator, it was possible to lower the temperatures such that food could be stored for a longer time. Another use of refrigerator is to think ahead. For example, in the modern times cooks and manufacturers can prepare food and store for later consumption. In the early times, food storage was a notable problem. Family meals can now be prepared when the prices of raw materials are low thus reducing the costs of preparing the food. Refrigerators are also used in transportation. Before the introduction of refrigerators, it was difficult to transport perishable products from one location to another. It was after the introduction of the refrigerators that food could be stored in a cool place during the transit. Improved quality is another merit that was experienced after the invention of refrigerators. It is imperative to note that before the introduction of the refrigerators, quality food was produced only during specific times of the year for example when the temperatures were low. In
Running head: REFRIGERATOR, HOW IT WORK 31st October 2013 Introduction One of the best technologies that human being has invented for food storage is the refrigerator. As the demand for food increase in the cotemporary world due to the increase in population, most countries have advocated for storage of food to avoid wastage…
There has been enormous scare of anthrax among the public. The fall of 2001 brought some of the toughest challenges that the American public health system had to encounter. Hundreds of thousands of people have lost life all over the world because of such diseases as AIDS and Ebola hemorrhagic fever.
Hence, it is natural for everyone to expect that the tests should be bias free in its design. However, in the field of education, the validity and ‘fairness’ of ‘standardized tests’ have been a matter of controversy since a long time. Students who appear for tests, parents, teachers and some educators think that standardized testing is unfair and does not do justice to the innate potential of students.
A fascinating feature of dreaming is in the event where it is believed in the moment of the dream and that all aspects of the surrealistic events are accepted as possible and truly occurring (Hobson, 2005). Dreams have many levels of inquiry, which include everything from the scientific to the mystical.
What is survival processing?
Survival processing is “memory processing according to its survival relevance,” a mechanism utilized by our ancestors when presented with threats to their survival, whether real or imagined(Soderstrom, 2011 June; 28 (3)).Although Nairne and Pandeirada have previously published works to substantiate the claim that imprints of ancestral memory are especially tuned to process memory in terms of its survival relevance, there have been mixed results reported since their findings in 2008(Nairne, J.S., Pandeirada, N.
6 Effect on the Workers 7 Conclusion 8 References 9 Introduction Outsourcing is a latest emerging trend round the globe. Basically, the term ‘outsourcing’ refers to the agreement between two organizations to offer services that a business organization can otherwise carry out using its own corporate resources.
It creates the basis on which the stakeholders of the firm derive a sense of belonging in line with the organizational goals. The art of listening harmonizes personal career objectives with the overall vision of the organization. On the other hand, the practice inculcates a synergetic spirit of teamwork and creativity among employees while opening the doors to product innovations which are customized to meet up the changing necessitates of the market.
The Internet which is today one of the most popular and important element of human life is a system that comprises of several computer networks that are connected with each other with the assistance of standard internet protocol suite and is there to serve a huge amount of population. Internet came into existence during the period of 1969.
The oil-eating bacteria are the brainchild of Dr. Ananda Mohan Chakraborty, PhD is an Indian-American microbiologist and eminent researcher and currently serving as professor at the University of Illinois. In 1971, while working in the Research and Development department of General Electric Company, New York, Professor Ananda Chakraborty genetically engineered a Pseudomonas strain of bacteria.
Large number of couples meet on internet and stay together forever, it have shown positive result on individuals. Online dating effect the life of individuals in both negative and positive aspects. Therefore, it is
There are two parties involved, the insurer which is the insurance company proffering or selling the insurance and the insured, widely known as policyholder, an entity or a person buying the insurance policy. The payment settled out for the insurance policy according to the
10 pages (2500 words)Research Paper
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