Etymology Case Essay

The book of account horticulture is modeled after agriculture, and comes from the Latin hortus tend and cultra cultivation, from cultus, the perfect passive participle of the verb col I prep ar.Hortus is cognate with the native English word yard (in the meaning of land associated with a building) and alike the borrowed word garden.Understanding horticultureHorticulture is a term that evokes images of plants, gardening, and spate working in the horticultural industries. For the public, and policy makers, the term is not completely understood nor is its impact on homo activities been fully appreciated. Horticulture impacts widely on human activities, more than than its popular understanding as merely gardening would indicate. It needs to be recognized as a matrix of inter-relating areas that overlap, with complex inter-relationships. A wider and more accurate definition will communicate effectively the wideness of plants, their cultivation and their use for sustainable human ex istence. The popular gardening activity sense fails to convey the in-chief(postnominal) role that horticulture plays in the lives of individuals, communities and human societies as a whole. Describing its impact on the physiological, psychological and social activities of people is key to expanding our understanding however the cultivation of a garden, orchard, or nursery and the cultivation of flowers, fruits, vegetables, or nonfunctional plants as well as the science and art of cultivating such plants will suffice to sketch the epitome of a short description.Expanded the traditional understanding of horticulture beyond garden cultivation. Turkey (1962) gave an over gull of those involved in the field of horticulture, in stating that there are those who are refer with the science or biological side, those concerned with the business side and fin all(prenominal)y those who are concerned with the home or art side, which enjoy plants scarce for the satis evention they get from th em. Primarily it is an art, but it is intimately connected with science at every point. Relf highlighted the fact that, in limiting the definition of horticulture severely limits an understanding of what horticulture means in terms of human well-being. Relf provided a comprehensive definition of horticulture as the art and science of plants resulting in the development of minds and emotions of individuals, the enrichment and health of communities, and the integration of the garden in the breadth of modern civilization.In addition, Half acre and Barden (1979), Janick and Goldman (2003). Further extended the scope of horticulture when they agreed that the origins of horticulture are intimately associated with the history of humanity and that horticulture encompasses all life and bridges the gap amidst science, art and human beings. This broader vision of horticulture embraces plants, including the multitude of products and activities (oxygen, food, medicine, clothing, shelter, celebr ation or remembrance) essential for human survival and people, whose active and passive elaboration with the garden brings virtually benefits to them as individuals and to the communities and cultures they encompassGreenhouse effectA representation of the exchanges of energy between the source (the Sun), the Earths surface, the Earths melodic line, and the ultimate sink outer space. The ability of the atmosphere to capture and recycle energy emitted by the Earth surface is the defining characteristic of the babys room effect. The nursery effect is a process by which thermal radiation from a planetary surface is negligent by atmospheric greenhouse gases, and is re-radiated in all directions. Since part of this re-radiation is back towards the surface and the lower atmosphere, it results in an elevation of the average surface temperature above what it would be in the absence of the gases.Solar radiation at the frequencies of visible light largely passes through the atmosphere to warm the planetary surface, which then emits this energy at the lower frequencies of infrared thermal radiation. Infrared radiation is absor pick out by greenhouse gases, which in bias re-radiate much of the energy to the surface and lower atmosphere. The weapon is named after the effect of solar radiation fugacious through glass and warming a greenhouse, but the way it retains heat is fundamentally different as a greenhouse works by reducing airflow, isolating the warm air inside the social system so that heat is not lost by convection.If an ideal thermally conductive blackbody was the akin distance from the Sun as the Earth is, it would have a temperature of about 5.3 C. However, since the Earth reflects about 30% of the incoming sunlight, the planets effective temperature (the temperature of a blackbody that would emit the same amount of radiation) is about 18 C,78 about 33C below the actual surface temperature of about 14 C. The mechanism that produces this difference betwe en the actual surface temperature and the effective temperature is due to the atmosphere and is known as the greenhouse effect. Earths born(p) greenhouse effect makes life as we know it possible. However, human activities, originally the burning of fossil fuels and clearing of forests, have intensified the natural greenhouse effect, causing global warming. young ELECTRONICSHome applianceNumerous appliances are found in the kitchen. Home appliances are electrical/ machinelike machines which accomplish some household functions, such as cooking or cleaning. Home appliances can be classified into* Major appliances, or White goods* Small appliances, or Brown goods* Consumer electronics, or Shiny goodsThis voice is also noticeable in the service area of these kinds of products. Brown goods usually require high technological knowledge and skills (which get more complex with time, such as going from a soldering weightlift to a hot-air soldering station), while white goods need more pra ctical skills and brute force to pull wires the devices and heavy tools required to repair them. voltaic blanketIn the US the electric blanket is a blanket with an integrated electrical heating device usually placed above the top bed sheet. In the UK and Commonwealth, electric blanket commonly refers to an electric mattress pad, which is placed below the bottom bed sheet. Electric blankets usually have a control unit which adjusts the amount of heat the blanket produces. Blankets for larger surface beds often have separate controls for each side of the bed. The electric blanket may be utilise to pre-heat the bed before use or to keep the occupant warm while in bed. new-fashioned electric blankets have carbon fibre wires. These blankets usually work on 24 volts instead of the one hundred ten/240 volts. Therefore, they are advertised as being a safer, more efficient and more comfortable alternative.Zhangjiajie, chinaware The Bailong Elevator is the worlds largest exterior elevat or. At over 1,000 feet tall, this elevator looms high midway up a cliff overlooking a valley far below. Moreover, the elevator is mostly glass, affording passengers a dizzying view to the depths below. There is some concern, however, about the elevators long-term impact on the surrounding natural environment.Yangtze, China The Three Gorges Dam has drawn fire from people around the world for its role in raising water levels and displacing megs of Chinese residents in the area. As a work of engineering, however, it is unparalleled. It will be the largest hydroelectric dam in the world, 600 feet high and holding 1.4 trillion cubic feet of water behind 100 million cubic feet of concrete. This engineering wonder will also eventually provide as much as 10% of Chinas vast power needs.TechnologyBy the mid 20th century, human had achieved a mastery of technology sufficient to leave the atmosphere of the Earth for the first time and explore space. Technology is the making, modification, us age, and knowledge of tools, machines, techniques, business deals, systems, methods of organization, in order to solve a problem, improve a preexisting outcome to a problem, achieve a goal or perform a unique(predicate) function. It can also refer to the collection of such tools, machinery, modifications, arrangements and procedures. Technologies significantly affect human as well as early(a) animal species ability to control and adapt to their natural environments.The word technology comes from Greek (technologa) from (tchn), meaning art, skill, craft, and - meaning study of-.1 The term can either be applied generally or to specific areas examples include construction technology, medical technology, and information technology. The human species use of technology began with the conversion of natural resources into unreserved tools. The prehistorical discovery of the ability to control fire increased the available sources of food and the invention of the rotate helped humans in travelling in and controlling their environment. Recent technological developments, including the printing press, the telephone, and the Internet, have lessen physical barriers to communication and allowed humans to interact freely on a global scale. However, not all technology has been used for peaceful purposes the development of weapons of ever-increasing destructive power has progressed throughout history, from clubs to nuclear weapons.