- published: 06 Apr 2015
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In mineralogy, diamond (/ˈdaɪəmənd/ or /ˈdaɪmənd/; from the ancient Greek ἀδάμας – adámas "unbreakable") is a metastable allotrope of carbon, where the carbon atoms are arranged in a variation of the face-centered cubic crystal structure called a diamond lattice. Diamond is less stable than graphite, but the conversion rate from diamond to graphite is negligible at standard conditions. Diamond is renowned as a material with superlative physical qualities, most of which originate from the strong covalent bonding between its atoms. In particular, diamond has the highest hardness and thermal conductivity of any bulk material. Those properties determine the major industrial application of diamond in cutting and polishing tools and the scientific applications in diamond knives and diamond anvil cells.
Because of its extremely rigid lattice, it can be contaminated by very few types of impurities, such as boron and nitrogen. Small amounts of defects or impurities (about one per million of lattice atoms) color diamond blue (boron), yellow (nitrogen), brown (lattice defects), green (radiation exposure), purple, pink, orange or red. Diamond also has relatively high optical dispersion (ability to disperse light of different colors).
A boy is a young male human, usually a child or adolescent. When he becomes an adult, he is described as a man. The most apparent difference between a typical boy and a typical girl is the genitalia. However, some intersex children with ambiguous genitals, and genetically female transgender children, may also be classified or self-identify as a boy.
The term boy is primarily used to indicate biological sex distinctions, cultural gender role distinctions or both. The latter most commonly applies to adult men, either considered in some way immature or inferior, in a position associated with aspects of boyhood, or even without such boyish connotation as age-indiscriminate synonym. The term can be joined with a variety of other words to form these gender-related labels as compound words.
The word "boy" comes from Middle English boi, boye ("boy, servant"), related to other Germanic words for boy, namely East Frisian boi ("boy, young man") and West Frisian boai ("boy"). Although the exact etymology is obscure, the English and Frisian forms probably derive from an earlier Anglo-Frisian *bō-ja ("little brother"), a diminutive of the Germanic root *bō- ("brother, male relation"), from Proto-Indo-European *bhā-, *bhāt- ("father, brother"). The root is also found in Flemish boe ("brother"), Norwegian dialectal boa ("brother"), and, through a reduplicated variant *bō-bō-, in Old Norse bófi, Dutch boef "(criminal) knave, rogue", German Bube ("knave, rogue, boy"). Furthermore, the word may be related to Bōia, an Anglo-Saxon personal name.
A woman is a female human. The term woman is usually reserved for an adult, with the term girl being the usual term for a female child or adolescent. The term woman is also sometimes used to identify a female human, regardless of age, as in phrases such as "women's rights". "Woman" may also refer to a person's gender identity. Women with typical genetic development are usually capable of giving birth from puberty until menopause. In the context of gender identity, transgender people who are biologically determined to be male and identify as women cannot give birth. Some intersex people who identify as women cannot give birth due to either sterility or inheriting one or more Y chromosomes. In extremely rare cases, people who have Swyer syndrome can give birth with medical assistance. Throughout history women have assumed or been assigned various social roles.
The spelling of woman in English has progressed over the past millennium from wīfmann to wīmmann to wumman, and finally, the modern spelling woman. In Old English, wīfmann meant "female human", whereas wēr meant "male human". Mann or monn had a gender-neutral meaning of "human", corresponding to Modern English "person" or "someone"; however, subsequent to the Norman Conquest, man began to be used more in reference to "male human", and by the late 13th century had begun to eclipse usage of the older term wēr. The medial labial consonants f and m in wīfmann coalesced into the modern form "woman", while the initial element, which meant "female", underwent semantic narrowing to the sense of a married woman ("wife"). It is a popular misconception that the term "woman" is etymologically connected with "womb", which is from a separate Old English word, wambe meaning "stomach" (of male or female; modern German retains the colloquial term "Wampe" from Middle High German for "potbelly"). Nevertheless, such a false derivation of "woman" has appeared in print.
Dwayne Michael Carter, Jr. (born September 27, 1982), better known by his stage name Lil Wayne, is an American hip hop recording artist from New Orleans, Louisiana. In 1991, at the age of nine, Lil Wayne joined Cash Money Records as the youngest member of the label, and half of the duo The B.G.'z, alongside fellow New Orleans-based rapper Lil' Doogie. In 1996, Lil Wayne formed the southern hip hop group Hot Boys, with his Cash Money label-mates Juvenile, Young Turk and Lil' Doogie (who now goes by B.G.). Hot Boys debuted with Get It How U Live!, that same year. Most of the group's success came with their platinum-selling album Guerrilla Warfare (1999) and the 1999 single "Bling Bling". Along with being the flagship artist of Cash Money Records, Lil Wayne is also the chief executive officer (CEO) of his own label imprint, Young Money Entertainment, which he founded in 2005.
Lil Wayne's solo debut album Tha Block Is Hot (1999), was certified platinum by the Recording Industry Association of America (RIAA). His subsequent albums, Lights Out (2000) and 500 Degreez (2002), went on to be certified gold. Wayne reached higher popularity with his fourth album Tha Carter (2004), which was led by the single "Go D.J." and his appearance on Destiny's Child's Top 10 single "Soldier", that same year. The album was followed by Tha Carter II (2005), as well as several mixtapes and collaborations throughout 2006 and 2007. Wayne gained more prominence with his sixth album Tha Carter III (2008), which became his most successful album to date, with first-week sales of over one million copies in the United States. The album won the Grammy Award for Best Rap Album and includes the hit singles "Lollipop", "A Milli" and "Got Money".