1.
Ancient Greek
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Ancient Greek includes the forms of Greek used in ancient Greece and the ancient world from around the 9th century BC to the 6th century AD. It is often divided into the Archaic period, Classical period. It is antedated in the second millennium BC by Mycenaean Greek, the language of the Hellenistic phase is known as Koine. Koine is regarded as a historical stage of its own, although in its earliest form it closely resembled Attic Greek. Prior to the Koine period, Greek of the classic and earlier periods included several regional dialects, Ancient Greek was the language of Homer and of fifth-century Athenian historians, playwrights, and philosophers. It has contributed many words to English vocabulary and has been a subject of study in educational institutions of the Western world since the Renaissance. This article primarily contains information about the Epic and Classical phases of the language, Ancient Greek was a pluricentric language, divided into many dialects. The main dialect groups are Attic and Ionic, Aeolic, Arcadocypriot, some dialects are found in standardized literary forms used in literature, while others are attested only in inscriptions. There are also several historical forms, homeric Greek is a literary form of Archaic Greek used in the epic poems, the Iliad and Odyssey, and in later poems by other authors. Homeric Greek had significant differences in grammar and pronunciation from Classical Attic, the origins, early form and development of the Hellenic language family are not well understood because of a lack of contemporaneous evidence. Several theories exist about what Hellenic dialect groups may have existed between the divergence of early Greek-like speech from the common Proto-Indo-European language and the Classical period and they have the same general outline, but differ in some of the detail. The invasion would not be Dorian unless the invaders had some relationship to the historical Dorians. The invasion is known to have displaced population to the later Attic-Ionic regions, the Greeks of this period believed there were three major divisions of all Greek people—Dorians, Aeolians, and Ionians, each with their own defining and distinctive dialects. Often non-west is called East Greek, Arcadocypriot apparently descended more closely from the Mycenaean Greek of the Bronze Age. Boeotian had come under a strong Northwest Greek influence, and can in some respects be considered a transitional dialect, thessalian likewise had come under Northwest Greek influence, though to a lesser degree. Most of the dialect sub-groups listed above had further subdivisions, generally equivalent to a city-state and its surrounding territory, Doric notably had several intermediate divisions as well, into Island Doric, Southern Peloponnesus Doric, and Northern Peloponnesus Doric. The Lesbian dialect was Aeolic Greek and this dialect slowly replaced most of the older dialects, although Doric dialect has survived in the Tsakonian language, which is spoken in the region of modern Sparta. Doric has also passed down its aorist terminations into most verbs of Demotic Greek, by about the 6th century AD, the Koine had slowly metamorphosized into Medieval Greek
2.
Psychiatry
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Psychiatry is the medical specialty devoted to the diagnosis, prevention, study, and treatment of mental disorders. These include various abnormalities related to mood, behaviour, cognition, initial psychiatric assessment of a person typically begins with a case history and mental status examination. Physical examinations and psychological tests may be conducted, on occasion, neuroimaging or other neurophysiological techniques are used. The fifth edition of the DSM was published in 2013, assertive community treatment, community reinforcement, and supported employment. Treatment may be delivered on an inpatient or outpatient basis, depending on the severity of functional impairment or on aspects of the disorder in question. The term psychiatry was first coined by the German physician Johann Christian Reil in 1808, a medical doctor specializing in psychiatry is a psychiatrist. Psychiatry refers to a field of medicine focused specifically on the mind, aiming to study, prevent and it has been described as an intermediary between the world from a social context and the world from the perspective of those who are mentally ill. People who specialize in psychiatry often differ from most other health professionals. The discipline studies the operations of different organs and body systems as classified by the subjective experiences. Psychiatry treats mental disorders, which are divided into three very general categories, mental illnesses, severe learning disabilities, and personality disorders. While the focus of psychiatry has changed little over time, the diagnostic and treatment processes have evolved dramatically, since the late 20th century the field of psychiatry has continued to become more biological and less conceptually isolated from other medical fields. Psychiatrists can therefore counsel patients, prescribe medication, order laboratory tests, order neuroimaging, like other purveyors of professional ethics, the World Psychiatric Association issues an ethical code to govern the conduct of psychiatrists. The psychiatric code of ethics, first set forth through the Declaration of Hawaii in 1977, has expanded through a 1983 Vienna update and, in 1996. The code was revised during the organizations general assembblies in 1999,2002,2005. Discredited psychiatrists who operated outside the norms of medical ethics include Harry Bailey, Donald Ewen Cameron, Samuel A. Cartwright, Henry Cotton, Psychiatric illnesses can be conceptualised in a number of different ways. The biomedical approach examines signs and symptoms and compares them with diagnostic criteria, Mental illness can be assessed, conversely, through a narrative which tries to incorporate symptoms into a meaningful life history and to frame them as responses to external conditions. The notion of a model is often used to underline the multifactorial nature of clinical impairment. In this notion the word model is not used in a scientific way though
3.
Fear
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Fear in human beings may occur in response to a specific stimulus occurring in the present, or in anticipation or expectation of a future threat perceived as a risk to body or life. The fear response arises from the perception of danger leading to confrontation with or escape from/avoiding the threat, in humans and animals, fear is modulated by the process of cognition and learning. Thus fear is judged as rational or appropriate and irrational or inappropriate, an irrational fear is called a phobia. Watson, Robert Plutchik, and Paul Ekman have suggested there is only a small set of basic or innate emotions. This hypothesized set includes such emotions as acute stress reaction, anger, angst, anxiety, fright, horror, joy, panic, and sadness. Fear is closely related to, but should be distinguished from, the emotion anxiety, the fear response serves survival by generating appropriate behavioral responses, so it has been preserved throughout evolution. Many physiological changes in the body are associated with fear, summarized as the fight-or-flight response and this primitive mechanism may help an organism survive by either running away or fighting the danger. With the series of changes, the consciousness realizes an emotion of fear. People develop specific fears as a result of learning and this has been studied in psychology as fear conditioning, beginning with John B. Watsons Little Albert experiment in 1920, which was inspired after observing a child with a fear of dogs. In this study, an 11-month-old boy was conditioned to fear a white rat in the laboratory, the fear became generalized to include other white, furry objects, such as a rabbit, dog, and even a ball of cotton. Fear can be learned by experiencing or watching a frightening traumatic accident, for example, if a child falls into a well and struggles to get out, he or she may develop a fear of wells, heights, enclosed spaces, or water. There are studies looking at areas of the brain that are affected in relation to fear, when looking at these areas, it was proposed that a person learns to fear regardless of whether they themselves have experienced trauma, or if they have observed the fear in others. In a study completed by Andreas Olsson, Katherine I and this suggests that fear can develop in both conditions, not just simply from personal history. Fear is affected by cultural and historical context, for example, in the early 20th century, many Americans feared polio, a disease that can lead to paralysis. There are consistent cross-cultural differences in how people respond to fear, display rules affect how likely people are to show the facial expression of fear and other emotions. Although many fears are learned, the capacity to fear is part of human nature, many studies have found that certain fears are much more common than others. These fears are also easier to induce in the laboratory and this phenomenon is known as preparedness
4.
Chemistry
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Chemistry is a branch of physical science that studies the composition, structure, properties and change of matter. Chemistry is sometimes called the science because it bridges other natural sciences, including physics. For the differences between chemistry and physics see comparison of chemistry and physics, the history of chemistry can be traced to alchemy, which had been practiced for several millennia in various parts of the world. The word chemistry comes from alchemy, which referred to a set of practices that encompassed elements of chemistry, metallurgy, philosophy, astrology, astronomy, mysticism. An alchemist was called a chemist in popular speech, and later the suffix -ry was added to this to describe the art of the chemist as chemistry, the modern word alchemy in turn is derived from the Arabic word al-kīmīā. In origin, the term is borrowed from the Greek χημία or χημεία and this may have Egyptian origins since al-kīmīā is derived from the Greek χημία, which is in turn derived from the word Chemi or Kimi, which is the ancient name of Egypt in Egyptian. Alternately, al-kīmīā may derive from χημεία, meaning cast together, in retrospect, the definition of chemistry has changed over time, as new discoveries and theories add to the functionality of the science. The term chymistry, in the view of noted scientist Robert Boyle in 1661, in 1837, Jean-Baptiste Dumas considered the word chemistry to refer to the science concerned with the laws and effects of molecular forces. More recently, in 1998, Professor Raymond Chang broadened the definition of chemistry to mean the study of matter, early civilizations, such as the Egyptians Babylonians, Indians amassed practical knowledge concerning the arts of metallurgy, pottery and dyes, but didnt develop a systematic theory. Greek atomism dates back to 440 BC, arising in works by such as Democritus and Epicurus. In 50 BC, the Roman philosopher Lucretius expanded upon the theory in his book De rerum natura, unlike modern concepts of science, Greek atomism was purely philosophical in nature, with little concern for empirical observations and no concern for chemical experiments. Work, particularly the development of distillation, continued in the early Byzantine period with the most famous practitioner being the 4th century Greek-Egyptian Zosimos of Panopolis. He formulated Boyles law, rejected the four elements and proposed a mechanistic alternative of atoms. Before his work, though, many important discoveries had been made, the Scottish chemist Joseph Black and the Dutchman J. B. English scientist John Dalton proposed the theory of atoms, that all substances are composed of indivisible atoms of matter. Davy discovered nine new elements including the alkali metals by extracting them from their oxides with electric current, british William Prout first proposed ordering all the elements by their atomic weight as all atoms had a weight that was an exact multiple of the atomic weight of hydrogen. The inert gases, later called the noble gases were discovered by William Ramsay in collaboration with Lord Rayleigh at the end of the century, thereby filling in the basic structure of the table. Organic chemistry was developed by Justus von Liebig and others, following Friedrich Wöhlers synthesis of urea which proved that organisms were, in theory
5.
Hydrophobic
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In chemistry, hydrophobicity is the physical property of a molecule that is seemingly repelled from a mass of water. In contrast, hydrophiles are attracted to water, Hydrophobic molecules tend to be nonpolar and, thus, prefer other neutral molecules and nonpolar solvents. Because water molecules are polar, hydrophobes do not dissolve well among them, Hydrophobic molecules in water often cluster together, forming micelles. Water on hydrophobic surfaces will exhibit a high contact angle, examples of hydrophobic molecules include the alkanes, oils, fats, and greasy substances in general. Hydrophobic materials are used for oil removal from water, the management of oil spills, Hydrophobic is often used interchangeably with lipophilic, fat-loving. However, the two terms are not synonymous, while hydrophobic substances are usually lipophilic, there are exceptions—such as the silicones and fluorocarbons. The term hydrophobe comes from the Ancient Greek ὑδρόφοβος, having a horror of water, constructed from ὕδωρ, water, thus, the two immiscible phases will change so that their corresponding interfacial area will be minimal. This effect can be visualized in the phenomenon called phase separation, Superhydrophobic surfaces, such as the leaves of the lotus plant, are those that are extremely difficult to wet. The contact angles of a water droplet exceeds 150° and the angle is less than 10°. This is referred to as the Lotus effect, and is primarily a physical property related to interfacial tension, in 1805, Thomas Young defined the contact angle θ by analyzing the forces acting on a fluid droplet resting on a solid surface surrounded by a gas. Wenzels equation shows that microstructuring a surface amplifies the natural tendency of the surface, a hydrophobic surface becomes more hydrophobic when microstructured – its new contact angle becomes greater than the original. However, a hydrophilic surface becomes more hydrophilic when microstructured – its new contact angle less than the original. Liquid in the Cassie–Baxter state is more mobile than in the Wenzel state and we can predict whether the Wenzel or Cassie–Baxter state should exist by calculating the new contact angle with both equations. By a minimization of free energy argument, the relation that predicted the new contact angle is the state most likely to exist. Stated in mathematical terms, for the Cassie–Baxter state to exist, a new criterion for the switch between Wenzel and Cassie-Baxter states has been developed recently based on surface roughness and surface energy. Contact angle is a measure of static hydrophobicity, and contact angle hysteresis, contact angle hysteresis is a phenomenon that characterizes surface heterogeneity. When a pipette injects a liquid onto a solid, the liquid will form some contact angle, as the pipette injects more liquid, the droplet will increase in volume, the contact angle will increase, but its three-phase boundary will remain stationary until it suddenly advances outward. The contact angle the droplet had immediately before advancing outward is termed the advancing contact angle, the receding contact angle is now measured by pumping the liquid back out of the droplet
6.
Biology
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Biology is a natural science concerned with the study of life and living organisms, including their structure, function, growth, evolution, distribution, identification and taxonomy. Modern biology is a vast and eclectic field, composed of branches and subdisciplines. However, despite the broad scope of biology, there are certain unifying concepts within it that consolidate it into single, coherent field. In general, biology recognizes the cell as the unit of life, genes as the basic unit of heredity. It is also understood today that all organisms survive by consuming and transforming energy and by regulating their internal environment to maintain a stable, the term biology is derived from the Greek word βίος, bios, life and the suffix -λογία, -logia, study of. The Latin-language form of the term first appeared in 1736 when Swedish scientist Carl Linnaeus used biologi in his Bibliotheca botanica, the first German use, Biologie, was in a 1771 translation of Linnaeus work. In 1797, Theodor Georg August Roose used the term in the preface of a book, karl Friedrich Burdach used the term in 1800 in a more restricted sense of the study of human beings from a morphological, physiological and psychological perspective. The science that concerns itself with these objects we will indicate by the biology or the doctrine of life. Although modern biology is a recent development, sciences related to. Natural philosophy was studied as early as the ancient civilizations of Mesopotamia, Egypt, the Indian subcontinent, however, the origins of modern biology and its approach to the study of nature are most often traced back to ancient Greece. While the formal study of medicine back to Hippocrates, it was Aristotle who contributed most extensively to the development of biology. Especially important are his History of Animals and other works where he showed naturalist leanings, and later more empirical works that focused on biological causation and the diversity of life. Aristotles successor at the Lyceum, Theophrastus, wrote a series of books on botany that survived as the most important contribution of antiquity to the plant sciences, even into the Middle Ages. Scholars of the medieval Islamic world who wrote on biology included al-Jahiz, Al-Dīnawarī, who wrote on botany, biology began to quickly develop and grow with Anton van Leeuwenhoeks dramatic improvement of the microscope. It was then that scholars discovered spermatozoa, bacteria, infusoria, investigations by Jan Swammerdam led to new interest in entomology and helped to develop the basic techniques of microscopic dissection and staining. Advances in microscopy also had a impact on biological thinking. In the early 19th century, a number of biologists pointed to the importance of the cell. Thanks to the work of Robert Remak and Rudolf Virchow, however, meanwhile, taxonomy and classification became the focus of natural historians
7.
Medicine
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Medicine is the science and practice of the diagnosis, treatment, and prevention of disease. The word medicine is derived from Latin medicus, meaning a physician, Medicine encompasses a variety of health care practices evolved to maintain and restore health by the prevention and treatment of illness. Medicine has existed for thousands of years, during most of which it was an art frequently having connections to the religious and philosophical beliefs of local culture. For example, a man would apply herbs and say prayers for healing, or an ancient philosopher. In recent centuries, since the advent of modern science, most medicine has become a combination of art, while stitching technique for sutures is an art learned through practice, the knowledge of what happens at the cellular and molecular level in the tissues being stitched arises through science. Prescientific forms of medicine are now known as medicine and folk medicine. They remain commonly used with or instead of medicine and are thus called alternative medicine. For example, evidence on the effectiveness of acupuncture is variable and inconsistent for any condition, in contrast, treatments outside the bounds of safety and efficacy are termed quackery. Medical availability and clinical practice varies across the world due to differences in culture. In modern clinical practice, physicians personally assess patients in order to diagnose, treat, the doctor-patient relationship typically begins an interaction with an examination of the patients medical history and medical record, followed by a medical interview and a physical examination. Basic diagnostic medical devices are typically used, after examination for signs and interviewing for symptoms, the doctor may order medical tests, take a biopsy, or prescribe pharmaceutical drugs or other therapies. Differential diagnosis methods help to rule out conditions based on the information provided, during the encounter, properly informing the patient of all relevant facts is an important part of the relationship and the development of trust. The medical encounter is then documented in the record, which is a legal document in many jurisdictions. Follow-ups may be shorter but follow the general procedure. The diagnosis and treatment may take only a few minutes or a few weeks depending upon the complexity of the issue, the components of the medical interview and encounter are, Chief complaint, the reason for the current medical visit. They are in the patients own words and are recorded along with the duration of each one, also called chief concern or presenting complaint. History of present illness, the order of events of symptoms. Distinguishable from history of illness, often called past medical history
8.
Word game
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Word games are spoken or board games often designed to test ability with language or to explore its properties. Word games are generally engaged as a source of entertainment, but have found to serve an educational purpose as well. For instance, young children can find enjoyment playing modestly competitive games such as Hangman, solving crossword puzzles, which requires familiarity with a larger vocabulary, is a pastime that mature adults have long credited with keeping their minds sharp. There are popular televised word games with valuable prizes for the winning contestants. Many word games enjoy international popularity across a multitude of languages, a word game or word puzzle can be of several different types, The goal is to form words out of given letters. Charades Fictionary LINQ Mad Libs Scattergories Taboo These are games based on words and letters
9.
BBC News
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BBC News is an operational business division of the British Broadcasting Corporation responsible for the gathering and broadcasting of news and current affairs. The department is the worlds largest broadcast news organisation and generates about 120 hours of radio and television output each day, the service maintains 50 foreign news bureaux with more than 250 correspondents around the world. James Harding has been Director of News and Current Affairs since April 2013, the departments annual budget is in excess of £350 million, it has 3,500 staff,2,000 of whom are journalists. BBC News domestic, global and online news divisions are housed within the largest live newsroom in Europe, parliamentary coverage is produced and broadcast from studios in Millbank in London. Through the BBC English Regions, the BBC also has regional centres across England, as well as national news centres in Northern Ireland, Scotland, all nations and English regions produce their own local news programmes and other current affairs and sport programmes. As with all media outlets, though, it has been accused of political bias from across the political spectrum. The British Broadcasting Company broadcast its first radio bulletin from radio station 2LO on 14 November 1922, on Easter weekend in 1930, this reliance on newspaper wire services left the radio news service with no information to report. The BBC gradually gained the right to edit the copy and, in 1934, however, it could not broadcast news before 6 PM until World War II. Gaumont British and Movietone cinema newsreels had been broadcast on the TV service since 1936, a weekly Childrens Newsreel was inaugurated on 23 April 1950, to around 350,000 receivers. The network began simulcasting its radio news on television in 1946, televised bulletins began on 5 July 1954, broadcast from leased studios within Alexandra Palace in London. The publics interest in television and live events was stimulated by Elizabeth IIs coronation in 1953 and it is estimated that up to 27 million people viewed the programme in the UK, overtaking radios audience of 12 million for the first time. Those live pictures were fed from 21 cameras in central London to Alexandra Palace for transmission and that year, there were around two million TV Licences held in the UK, rising to over three million the following year, and four and a half million by 1955. This was then followed by the customary Television Newsreel with a commentary by John Snagge. It was revealed that this had been due to producers fearing a newsreader with visible facial movements would distract the viewer from the story. On-screen newsreaders were finally introduced a year later in 1955 – Kenneth Kendall, Robert Dougall, mainstream television production had started to move out of Alexandra Palace in 1950 to larger premises – mainly at Lime Grove Studios in Shepherds Bush, west London – taking Current Affairs with it. It was from here that the first Panorama, a new programme, was transmitted on 11 November 1953. On 28 October 1957, the Today programme, a radio programme, was launched in central London on the Home Service. In 1958, Hugh Carleton Greene became head of News and Current Affairs and he set up a BBC study group whose findings, published in 1959, were critical of what the television news operation had become under his predecessor, Tahu Hole
10.
Anti-German sentiment
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Anti-German sentiment is defined as an opposition to or fear of Germany, its inhabitants, its culture and the German language. As a political phenomenon, anti-German sentiment became significant especially from the mid-19th Century, parallel with the Unification of Germany and its rise as a world power. In the 1860s Russia experienced an outbreak of Germanophobia, mainly restricted to a group of writers in St. Petersburg who had united around a right wing newspaper. The following year,1865, the 100th anniversary of the death of Mikhail Lomonosov was marked throughout the Russian empire, articles were published mentioning the difficulties Lomonosov had encountered from the foreign members of the Russian Academy of Sciences, most of whom had been of German descent. The authors then criticized contemporary German scholars for their neglect of the Russian language and it was further suggested by some writers that Russian citizens of German origin who did not speak Russian and follow the Orthodox faith should be considered foreigners. It was also proposed that people of German descent be forbidden from holding posts as they might not have solidarity with respect to Russia. Negative comments about Germany had begun to appear in Britain in the 1870s, criticisms were expressed in the press and in the birth of the invasion novel, many of which focused on the idea that Britain might be Germanys next victim. In 1887, the label Made in Germany was introduced, to get British buyers to adhere to the concept of buying British, after suffering slight losses, German manufacturers soon found the label to be of good use. In the 1890s there was hostility towards foreigners in Britain, mainly directed against eastern European Jews. Interviewees for the Royal Commission on Alien Immigration believed that Germans were not of the race and involved in prostitution. Many people viewed Germans working in Britain as non whites and as threatening the livelihood of Britons by being willing to work for longer hours. Anti-German hostility deepened since early 1896 after the Kruger telegram of Kaiser Wilhelm II, attacks on Germans in London were reported in the German press at the time but do not appear to have actually occurred. The Saturday Review suggested be ready to fight Germany, as Germania delenda est, the Kaisers reputation was further degraded by his angry tirade and the Daily Telegraph Affair. Following the signing of the Entente Cordiale in 1904 between Britain and France, official relationships cooled as did popular attitudes towards Germany and German residents in Britain, a fear of German militarism replaced a previous admiration for German culture and literature. At the same time, journalists produced a stream of articles on the threat posed by Germany, in the Daily Telegraph Affair of 1908-1909, the Kaiser humiliated himself and further soured relations by his intemperate attacks on Britain. Twelve years later Harmsworth asked him to change sentiment, promising the full support of his formidable advertising capabilities, in 1914 when the German army invaded neutral Belgium and northern France many thousands of Belgian and French civilians were accused of being francs-tireurs and executed. These acts were used to encourage anti-German feelings and the Allied Powers produced propaganda depicting Germans as Huns capable of infinite cruelty and violence. In the UK, the German Shepherd breed of dog was renamed to the euphemistic Alsatian and it was a fine sight to see the Germans coming on in solid formation, in front of our machine guns
11.
Web search engine
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A web search engine is a software system that is designed to search for information on the World Wide Web. The search results are presented in a line of results often referred to as search engine results pages. The information may be a mix of web pages, images, some search engines also mine data available in databases or open directories. Unlike web directories, which are maintained only by human editors, Internet search engines themselves predate the debut of the Web in December 1990. The Who is user search dates back to 1982 and the Knowbot Information Service multi-network user search was first implemented in 1989, the first well documented search engine that searched content files, namely FTP files was Archie, which debuted on 10 September 1990. Prior to September 1993 the World Wide Web was entirely indexed by hand, there was a list of webservers edited by Tim Berners-Lee and hosted on the CERN webserver. One historical snapshot of the list in 1992 remains, but as more and more web servers went online the central list could no longer keep up, on the NCSA site, new servers were announced under the title Whats New. The first tool used for searching content on the Internet was Archie, the name stands for archive without the v. It was created by Alan Emtage, Bill Heelan and J. Peter Deutsch, the rise of Gopher led to two new search programs, Veronica and Jughead. Like Archie, they searched the file names and titles stored in Gopher index systems, Veronica provided a keyword search of most Gopher menu titles in the entire Gopher listings. Jughead was a tool for obtaining information from specific Gopher servers. While the name of the search engine Archie Search Engine was not a reference to the Archie comic book series, Veronica and Jughead are characters in the series, thus referencing their predecessor. In the summer of 1993, no search engine existed for the web, oscar Nierstrasz at the University of Geneva wrote a series of Perl scripts that periodically mirrored these pages and rewrote them into a standard format. This formed the basis for W3Catalog, the webs first primitive search engine, in June 1993, Matthew Gray, then at MIT, produced what was probably the first web robot, the Perl-based World Wide Web Wanderer, and used it to generate an index called Wandex. The purpose of the Wanderer was to measure the size of the World Wide Web, the webs second search engine Aliweb appeared in November 1993. Aliweb did not use a web robot, but instead depended on being notified by website administrators of the existence at each site of a file in a particular format. NCSAs Mosaic™ - Mosaic wasnt the first Web browser, but it was the first to make a major splash. In November 1993, Mosaic v 1, jumpStation used a web robot to find web pages and to build its index, and used a web form as the interface to its query program
12.
Bathing
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Bathing is the washing of the body with a fluid, usually water or an aqueous solution, or the immersion of the body in water. It may be practiced for personal hygiene, religious ritual or therapeutic purposes, by analogy, especially as a recreational activity, the term is also applied to sun bathing and sea bathing. Bathing can take place in any situation where there is water and it can take place in a bathtub or shower, or it can be in a river, lake, water hole, pool or the sea, or any other water receptacle. The term for the act can vary, the city of Bath is famous for its public baths fed by hydrothermal springs. Throughout history, societies devised systems to water to be brought to population centres. Ancient Indians used elaborate practices for personal hygiene with three daily baths and washing and these are recorded in the works called grihya sutras which are in practice even today in some communities. Ancient Greece utilized small bathtubs, wash basins, and foot baths for personal cleanliness, the earliest findings of baths date from the mid-2nd millennium BC in the palace complex at Knossos, Crete, and the luxurious alabaster bathtubs excavated in Akrotiri, Santorini. The Greeks established public baths and showers within gymnasiums for relaxation, in fact, the word gymnasium comes from the Greek word gymnos, meaning naked. Ancient Rome developed a network of aqueducts to supply water to all towns and population centres and had indoor plumbing, with pipes that terminated in homes and at public wells. The Roman public baths were called thermae, with the fall of the Roman Empire the aqueduct network fell into disrepair and most of it ceased to be used. Before the 7th century, the Japanese probably mostly bathed in the springs in the open. In the 6th to 8th centuries the Japanese took the religion of Buddhism from China, for every Buddhist temple traditionally included a bathhouse for the monks. These baths were opened in time to the rest of the population, only the wealthy had private baths. The first public bathhouse was mentioned in 1266, in Edo, the first sentō was established in 1591. The early steam baths or steam baths were called iwaburo or kamaburo and it was natural or artificial caves or stone vaults. In iwaburo along the coast, the rocks were heated by burning wood, the entrance to these bath houses was very small, so that the steam escaped. There were no windows, so it was dark inside. The darkness could be used for sexual contact
13.
Washing
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Washing is a method of cleaning, usually with water and often some kind of soap or detergent. Washing both body and clothing is an part of good hygiene and health. Often people use soaps and detergents to assist in the emulsification of oils, the soap can be applied directly, or with the aid of a washcloth. People wash themselves, or bathe periodically, infants, the sick, and people with disabilities are bathed by a caregiver, but those that can wash themselves often do so. Often a shower or a bathtub is used for washing, people bathe naked under most circumstances, and commonly do so in the privacy of their home. In Europe, some use a bidet to wash their external genitalia. More frequent is washing of just the hands, e. g. before and after preparing food and eating, after using the toilet, after handling something dirty, etc. Hand washing is important in reducing the spread of germs. also common is washing the face, brushing ones teeth is also essential for hygiene and is a part of washing. Washing can also refer to the washing of clothing or other items, like bed sheets. It can also refer to washing ones car, by lathering the exterior with car soap, then rinsing it off with a hose, excessive washing may damage the hair or cause rough skin or skin lesions. Bathing Car wash Cleaning agent Cleanliness Hygiene Dishwashing Hand washing Laundry symbols, washing machine Sanitation Wikibooks, Car Washing Techniques
14.
Height
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Height is the measure of vertical distance, either how tall something is, or how high up it is. For example The height of the building is 50 m or The height of the airplane is 10,000 m, when used to describe how high something like an airplane or mountain peak is from sea level, height is more often called altitude. Height is measured along the axis between a specified point and another. English high is derived from Old English hēah, ultimately from Proto-Germanic *xauxa-z, the derived noun height, also the obsolete forms heighth and highth, is from Old English híehþo, later héahþu, as it were from Proto-Germanic *xaux-iþa. In elementary models of space, height may indicate the third dimension, height is normal to the plane formed by the length and width. Height is also used as a name for more abstract definitions. Although height is relative to a plane of reference, most measurements of height in the world are based upon a zero surface. Both altitude and elevation, two synonyms for height, are defined as the position of a point above the mean sea level. One can extend the surface under the continents, naively. In practice, the sea level under a continent has to be computed from gravity measurements, instead of using the sea level, geodesists often prefer to define height from the surface of a reference ellipsoid, see Geodetic system, vertical datum. Defining the height of geographic landmarks becomes a question of reference, in aviation terminology, the terms height, altitude, and elevation are not synonyms. Usually, the altitude of an aircraft is measured from sea level, Elevation is also measured from sea level, but is most often regarded as a property of the ground. Thus, elevation plus height can equal altitude, but the term altitude has several meanings in aviation, Human height is one of the areas of study within anthropometry. While height variations within a population are largely genetic, height variations between populations are mostly environmental, the United Nations uses height to monitor changes in the nutrition of developing nations. In human populations, average height can distill down complex data about the birth, upbringing, social class, diet. Acrophobia Centimetre–gram–second system of units Chinese units of measurement Elevation Human height Imperial units International System of Units United States customary units
15.
Sewing needle
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A sewing needle for hand-sewing is a long slender tool with a pointed tip at one end and a hole or eye at the other. The earliest needles were made of bone or wood, modern ones are manufactured from carbon steel wire and are nickel- or 18K gold-plated for corrosion resistance. The highest quality embroidery needles are plated with platinum and one-third titanium alloy. Traditionally, needles have been kept in books or needlecases which have become objects of adornment. Sewing needles may also be kept in an etui, a box that held needles and other items such as scissors, pencils. Hand sewing needles come in a variety of types/ classes designed according to their intended use, sharp Needles, used for general hand sewing, built with a sharp point, a round eye, and are of medium length. Those with a double-eyes are able to carry two strands of thread while minimizing fabric friction, appliqué, These are considered another all-purpose needle for sewing, appliqué, and patch work. Embroidery, Also known as needles, identical to sharps but have a longer eye to enable easier threading of multiple embroidery threads. Milliners, A class of needles generally longer than sharps, useful for basting and pleating, normally used in millinery work. Beading, These needles are very fine, with an eye to enable them to fit through the centre of beads and sequins along with a long shaft to thread. Bodkin, Also called ballpoints, this is a long, thick needle with a ballpoint end and they can be flat or round and are generally used for threading elastic, ribbon or tape through casings and lace openings. Chenille, These are similar to tapestry needles but with large, long eyes, darning, Sometimes called finishing needles, these are designed with a blunt tip and large eye making them similar to tapestry needles but longer, yarn darners are the heaviest sub-variety. Doll, Not designed for hand sewing at all, these needles are made long and thin and are used for soft sculpturing on dolls, particularly facial details. Leather, Also known as glovers and as wedge needles, these have a point designed to pierce leather without tearing it, often used on leather-like materials such as vinyl. Sailmaker, Similar to leather needles, but the triangular point extends further up the shaft, tatting, These are built long with an even thickness for their entire length, including at the eye, to enable thread to be pulled through the double stitches used in tatting. Straight sizes, 3-12 long, curved,1. 5-6 long, needle size is denoted by one or more numbers on the manufacturers packet. The general convention for sizing of needles, like that of wire gauges, is that any given class of needle the length. For example, a size 9 needle will be thicker and longer than a size 12 needle, however, the needle sizes are not standardized and so a size 10 of one class may be either thinner or finer than a size 12 of another type
16.
Knife
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A knife is a tool with a cutting edge or blade, hand-held or otherwise, with most having a handle. Some types of knives are used as utensils, including knives used at the dining table, many types of knives are used as tools, such as the utility knife carried by soldiers, the pocket knife carried by hikers and the hunting knife used by hunters. Knives are also used as a traditional or religious implement, such as the kirpan, some types of knives are used as weapons, such as daggers or switchblades. Some types of knives are used as sports equipment, Knives are also used in agriculture, food harvesting etc. the sickle, the scythe and even the combine harvester are knives. Knife-like tools were used at least two-and-a-half million years ago, as evidenced by the Oldowan tools. Originally made of rock, bone, flint, and obsidian, knives have evolved in construction as technology has, with blades being made from bronze, copper, iron, steel, ceramics, many cultures have their unique version of the knife. Due to its role as humankinds first tool, certain cultures have attached spiritual, most modern-day knives follow either a fixed-blade or a folding construction style, with blade patterns and styles as varied as their makers and countries of origin. The word knife possibly descends from an old Norse word knifr for blade, single-edged knives may have a reverse edge or false edge occupying a section of the spine. These edges are serrated and are used to further enhance function. The handle, used to grip and manipulate the blade safely, may include a tang, Knives are made with partial tangs or full tangs. The handle may include a bolster, a piece of heavy material situated at the front or rear of the handle, the bolster, as its name suggests, is used to mechanically strengthen the knife. Knife blades can be manufactured from a variety of materials, each of which has advantages and disadvantages, carbon steel, an alloy of iron and carbon, can be very sharp. It holds its edge well, and remains easy to sharpen, stainless steel is an alloy of iron, chromium, possibly nickel, and molybdenum, with only a small amount of carbon. It is not able to quite as sharp an edge as carbon steel. High carbon stainless steel is steel with a higher amount of carbon, intended to incorporate the better attributes of carbon steel. High carbon stainless steel blades do not discolor or stain, laminate blades use multiple metals to create a layered sandwich, combining the attributes of both. For example, a harder, more brittle steel may be sandwiched between a layer of softer, tougher, stainless steel to reduce vulnerability to corrosion. In this case, however, the part most affected by corrosion, pattern-welding is similar to laminate construction
17.
Cat
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The domestic cat is a small, typically furry, carnivorous mammal. They are often called house cats when kept as pets or simply cats when there is no need to distinguish them from other felids. Cats are often valued by humans for companionship and for their ability to hunt vermin, there are more than 70 cat breeds, though different associations proclaim different numbers according to their standards. Cats are similar in anatomy to the felids, with a strong flexible body, quick reflexes, sharp retractable claws. Cat senses fit a crepuscular and predatory ecological niche, cats can hear sounds too faint or too high in frequency for human ears, such as those made by mice and other small animals. They can see in near darkness, like most other mammals, cats have poorer color vision and a better sense of smell than humans. Cats, despite being solitary hunters, are a species and cat communication includes the use of a variety of vocalizations. Cats have a high breeding rate, under controlled breeding, they can be bred and shown as registered pedigree pets, a hobby known as cat fancy. Failure to control the breeding of pet cats by neutering, as well as the abandonment of former household pets, has resulted in numbers of feral cats worldwide. In certain areas outside cats native range, this has contributed, along with destruction and other factors. Cats have been known to extirpate a bird species within specific regions, a genetic study in 2007 concluded that domestic cats are descended from Near Eastern wildcats, having diverged around 8,000 BC in the Middle East. As of a 2007 study, cats are the second most popular pet in the US by number of pets owned, in a 2010 study they were ranked the third most popular pet in the UK, after fish and dogs, with around 8 million being owned. The domestic cat is believed to have evolved from the Near Eastern wildcat, the felids are a rapidly evolving family of mammals that share a common ancestor only 10–15 million years ago and include lions, tigers, cougars and many others. Within this family, domestic cats are part of the genus Felis, members of the genus are found worldwide and include the jungle cat of southeast Asia, European wildcat, African wildcat, the Chinese mountain cat, and the Arabian sand cat, among others. The domestic cat was first classified as Felis catus by Carl Linnaeus in the 10th edition of his Systema Naturae published in 1758, because of modern phylogenetics, domestic cats are usually regarded as another subspecies of the wildcat, F. silvestris. This has resulted in mixed usage of the terms, as the cat can be called by its subspecies name. Wildcats have also referred to as various subspecies of F. catus, but in 2003. The most common name in use for the cat remains F. catus
18.
Man
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The term man is usually reserved for an adult male, with the term boy being the usual term for a male child or adolescent. However, the man is also sometimes used to identify a male human, regardless of age. Like most other mammals, a mans genome typically inherits an X chromosome from his mother. The male fetus produces larger amounts of androgens and smaller amounts of estrogens than a female fetus and this difference in the relative amounts of these sex steroids is largely responsible for the physiological differences that distinguish men from women. During puberty, hormones which stimulate androgen production result in the development of sexual characteristics. However, there are exceptions to the above for some transgender, the English term man is derived from a Proto-Indo-European root *man-. More directly, the word derives from Old English mann, the Old English form had a default meaning of adult male, though it could also signify a person of unspecified gender. The closely related Old English pronoun man was used just as it is in Modern German to designate one. The Old English form is derived from Proto-Germanic *mannz, human being, person, which is also the etymon of German Mann man, husband and man one, Old Norse maðr, according to Tacitus, the mythological progenitor of the Germanic tribes was called Mannus. *Manus in Indo-European mythology was the first man, see Mannus, the word man is used to mean any adult male. In English-speaking countries, many words can also be used to mean an adult male such as guy, dude, buddy, bloke, fellow, chap. The term manhood is associated with masculinity and virility, which refer to male qualities, humans exhibit sexual dimorphism in many characteristics, many of which have no direct link to reproductive ability, although most of these characteristics do have a role in sexual attraction. Most expressions of sexual dimorphism in humans are found in height, weight, for example, men tend to be taller than women, but there are many people of both sexes who are in the mid-height range for the species. If a sperm cell carrying an X chromosome fertilizes the egg, the offspring will typically be female, if a sperm cell carrying a Y chromosome fertilizes the egg, persons whose anatomy or chromosomal makeup differ from this pattern are referred to as intersex. This is referred to as the XY sex-determination system and is typical of most mammals, the term primary sexual characteristics denotes the kind of gamete the gonad produces, the ovary produces egg cells in the female, and the testis produces sperm cells in the male. The term secondary sexual characteristics denotes all other sexual distinctions that play roles in uniting sperm. Biological factors are not sufficient determinants of whether a person considers themselves a man or is considered a man, intersex individuals, who have physical or genetic features considered to be mixed or atypical for one sex or the other, may use other criteria in making a clear determination. There are also transgender and transsexual men, who were assigned as female at birth, the male sex organs are part of the reproductive system, consisting of the penis, testicles, vas deferens, and the prostate gland
19.
Water
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Water is a transparent and nearly colorless chemical substance that is the main constituent of Earths streams, lakes, and oceans, and the fluids of most living organisms. Its chemical formula is H2O, meaning that its molecule contains one oxygen, Water strictly refers to the liquid state of that substance, that prevails at standard ambient temperature and pressure, but it often refers also to its solid state or its gaseous state. It also occurs in nature as snow, glaciers, ice packs and icebergs, clouds, fog, dew, aquifers, Water covers 71% of the Earths surface. It is vital for all forms of life. Only 2. 5% of this water is freshwater, and 98. 8% of that water is in ice and groundwater. Less than 0. 3% of all freshwater is in rivers, lakes, and the atmosphere, a greater quantity of water is found in the earths interior. Water on Earth moves continually through the cycle of evaporation and transpiration, condensation, precipitation. Evaporation and transpiration contribute to the precipitation over land, large amounts of water are also chemically combined or adsorbed in hydrated minerals. Safe drinking water is essential to humans and other even though it provides no calories or organic nutrients. There is a correlation between access to safe water and gross domestic product per capita. However, some observers have estimated that by 2025 more than half of the population will be facing water-based vulnerability. A report, issued in November 2009, suggests that by 2030, in developing regions of the world. Water plays an important role in the world economy, approximately 70% of the freshwater used by humans goes to agriculture. Fishing in salt and fresh water bodies is a source of food for many parts of the world. Much of long-distance trade of commodities and manufactured products is transported by boats through seas, rivers, lakes, large quantities of water, ice, and steam are used for cooling and heating, in industry and homes. Water is an excellent solvent for a variety of chemical substances, as such it is widely used in industrial processes. Water is also central to many sports and other forms of entertainment, such as swimming, pleasure boating, boat racing, surfing, sport fishing, Water is a liquid at the temperatures and pressures that are most adequate for life. Specifically, at atmospheric pressure of 1 bar, water is a liquid between the temperatures of 273.15 K and 373.15 K
20.
Hydrophobe
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In chemistry, hydrophobicity is the physical property of a molecule that is seemingly repelled from a mass of water. In contrast, hydrophiles are attracted to water, Hydrophobic molecules tend to be nonpolar and, thus, prefer other neutral molecules and nonpolar solvents. Because water molecules are polar, hydrophobes do not dissolve well among them, Hydrophobic molecules in water often cluster together, forming micelles. Water on hydrophobic surfaces will exhibit a high contact angle, examples of hydrophobic molecules include the alkanes, oils, fats, and greasy substances in general. Hydrophobic materials are used for oil removal from water, the management of oil spills, Hydrophobic is often used interchangeably with lipophilic, fat-loving. However, the two terms are not synonymous, while hydrophobic substances are usually lipophilic, there are exceptions—such as the silicones and fluorocarbons. The term hydrophobe comes from the Ancient Greek ὑδρόφοβος, having a horror of water, constructed from ὕδωρ, water, thus, the two immiscible phases will change so that their corresponding interfacial area will be minimal. This effect can be visualized in the phenomenon called phase separation, Superhydrophobic surfaces, such as the leaves of the lotus plant, are those that are extremely difficult to wet. The contact angles of a water droplet exceeds 150° and the angle is less than 10°. This is referred to as the Lotus effect, and is primarily a physical property related to interfacial tension, in 1805, Thomas Young defined the contact angle θ by analyzing the forces acting on a fluid droplet resting on a solid surface surrounded by a gas. Wenzels equation shows that microstructuring a surface amplifies the natural tendency of the surface, a hydrophobic surface becomes more hydrophobic when microstructured – its new contact angle becomes greater than the original. However, a hydrophilic surface becomes more hydrophilic when microstructured – its new contact angle less than the original. Liquid in the Cassie–Baxter state is more mobile than in the Wenzel state and we can predict whether the Wenzel or Cassie–Baxter state should exist by calculating the new contact angle with both equations. By a minimization of free energy argument, the relation that predicted the new contact angle is the state most likely to exist. Stated in mathematical terms, for the Cassie–Baxter state to exist, a new criterion for the switch between Wenzel and Cassie-Baxter states has been developed recently based on surface roughness and surface energy. Contact angle is a measure of static hydrophobicity, and contact angle hysteresis, contact angle hysteresis is a phenomenon that characterizes surface heterogeneity. When a pipette injects a liquid onto a solid, the liquid will form some contact angle, as the pipette injects more liquid, the droplet will increase in volume, the contact angle will increase, but its three-phase boundary will remain stationary until it suddenly advances outward. The contact angle the droplet had immediately before advancing outward is termed the advancing contact angle, the receding contact angle is now measured by pumping the liquid back out of the droplet
. PMID 20062769.
