Light therapy, also called phototherapy or bright light therapy is the exposure to direct sunlight or artificial light at controlled wavelengths in order to treat a variety of medical disorders, including seasonal affective disorder (SAD), circadian rhythm sleep-wake disorders, cancers, and skin wound infections. Treating skin conditions such as neurodermatitis, psoriasis, acne vulgaris, and eczema with ultraviolet light is called ultraviolet light therapy. Medical uses Nutrient deficiency Vitamin D deficiency Exposure to light to wavelengths of 290-300 nanometers enables the body to produce vitamin D3 to treat vitamin D3 deficiency. Ultraviolet B Light Emitting Diodes (LEDs) Are Efficient and Effective in Producing Vitamin D3 in Human Skin Skin conditions Light therapy treatments for the skin usually...

The Victorian gold rush was a period in the history of Victoria, Australia approximately between 1851 and the late 1860s. It led to a period of extreme prosperity for the Australian colony, and an influx of population growth and financial capital for Melbourne, which was dubbed "Marvellous Melbourne" as a result of the procurement of wealth. Overview The Victorian Gold Discovery Committee wrote in 1854: The discovery of the Victorian Goldfields has converted a remote dependency into a country of worldwide fame; it has attracted a population, extraordinary in number, with unprecedented rapidity; it has enhanced the value of property to an enormous extent; it has made this the richest country in the world; and, in less than three years, it has done for this colony the work of an age, and made its impulses felt in the most distant regions of the earth. With the exception of the more extensive fields of California, for a number of years the gold output from Victoria was greater than in any other country in the world. Victoria's greatest...

The Culture of Narcissism: American Life in an Age of Diminishing Expectations is a 1979 book by the cultural historian Christopher Lasch, in which the author explores the roots and ramifications of what he perceives as the normalizing of pathological narcissism in 20th-century American culture using psychological, cultural, artistic and historical synthesis. For the mass-market edition published in September of the same year, Lasch won the 1980 US National Book Award in the category Current Interest (paperback). Summary Lasch proposes that since World War II, America has produced a personality-type consistent with clinical definitions of "pathological narcissism". This pathology is not akin to everyday narcissism, a hedonistic egoism, but with clinical diagnosis of narcissistic personality disorder. For Lasch, "pathology represents a heightened version of normality." He locates symptoms of this personality disorder in the radical political movements of the 1960s (such as the Weather Underground), as well as in the spiritual cults and movements of the 1970s, from est to Rolfing. ...

The Anatomy of Dependence (甘えの構造, Amae no Kōzō) is a 1971 book by Japanese psychoanalyst Takeo Doi, discussing at length Doi's concept of amae, which he describes as a uniquely Japanese need to be in good favor with, and be able to depend on, the people around oneself. He likens this to behaving childishly in the assumption that parents will indulge you (Doi 2001:16), and claims that the ideal relationship is that of the parent–child, and all other relationships should strive for this degree of closeness (Doi 2001:39). Main concept Amae (甘え) is the nominal form of the verb amaeru (甘える), which Doi uses to describe the behavior of a person attempting to induce an authority figure, such as a parent, spouse, teacher, or supervisor, to take care of them. The word is rarely used of oneself, but rather is applied...

Crisis negotiation is a law enforcement technique used to communicate with people who are threatening violence (workplace violence, domestic violence, suicide, or terrorism), including barricaded subjects, stalkers, criminals attempting to escape or evade arrest, and hostage-takers. Crisis negotiation is often initiated by the first officer(s) on the scene. History Modern hostage negotiation principles were established in 1972 when New York City Police Department detective Harvey Schlossberg, also a psychologist, recognized the need for trained personnel in crisis intervention. Schlossberg had worked on the David Berkowitz ("Son of Sam") case, and had instituted other psychological principles in police work, including psychological screening of police applicants and the use of hypnosis in suspect/witness interviews. Schlossberg's negotiation strategies were used during the 1973 New York City hostage incident and were crucial in ensuring the peaceful resolution of the standoff.The first hostage negotiators were often deployed as elements of police tactical units and merely created a diversion while they deployed. In modern...

Micas ( MY-kəz) are a group of silicate minerals whose outstanding physical characteristic is that individual mica crystals can easily be split into extremely thin elastic plates. This characteristic is described as perfect basal cleavage. Mica is common in igneous and metamorphic rock and is occasionally found as small flakes in sedimentary rock. It is particularly prominent in many granites, pegmatites, and schists, and "books" (large individual crystals) of mica several feet across have been found in some pegmatites.Micas are used in products such as drywalls, paints, fillers, especially in parts for automobiles, roofing and shingles, as well as in electronics. The mineral is used in cosmetics and food to add "shimmer" or "frost." Properties and structure The mica group is composed of 37 phyllosilicate minerals. All crystallize in the monoclinic system, with a tendency towards pseudohexagonal crystals, and are similar in structure but vary in chemical composition. Micas are translucent to opaque with a distinct vitreous or pearly...