Hydrogen peroxide is a chemical compound with the formula H2O2. In its pure form, it is a very pale blue liquid, slightly more viscous than water. It is used as an oxidizer, bleaching agent, and antiseptic, usually as a dilute solution in water for consumer use, and in higher concentrations for industrial use. Concentrated hydrogen peroxide, or "high-test peroxide", decomposes explosively when heated and has been used as a propellant in rocketry.
Oxygen is the chemical element with the symbol O and atomic number 8. It is a member of the chalcogen group in the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other compounds. Oxygen is Earth's most abundant element, and after hydrogen and helium, it is the third-most abundant element in the universe. At standard temperature and pressure, two atoms of the element bind to form dioxygen, a colorless and odorless diatomic gas with the formula O
2. Diatomic oxygen gas currently constitutes 20.95% of the Earth's atmosphere, though this has changed considerably over long periods of time. Oxygen makes up almost half of the Earth's crust in the form of oxides.
O, or o, is the fifteenth letter in the ISO basic Latin alphabet and the fourth vowel letter in the modern English alphabet. Its name in English is o, plural oes.
Silicon dioxide, also known as silica, is an oxide of silicon with the chemical formula SiO2, most commonly found in nature as quartz and in various living organisms. In many parts of the world, silica is the major constituent of sand. Silica is one of the most complex and most abundant families of materials, existing as a compound of several minerals and as a synthetic product. Notable examples include fused quartz, fumed silica, silica gel, opal and aerogels. It is used in structural materials, microelectronics, and as components in the food and pharmaceutical industries.
Roseann O'Donnell is an American comedian, television producer, actress, author, and television personality. She began her comedy career as a teenager and received her breakthrough on the television series Star Search in 1984. After a series of television and film roles that introduced her to a larger national audience, O'Donnell hosted her own syndicated daytime talk show, The Rosie O'Donnell Show, between 1996 and 2002, which won several Daytime Emmy Awards. During this period, she developed the nickname "Queen of Nice", as well as a reputation for philanthropic efforts.
Big O notation is a mathematical notation that describes the limiting behavior of a function when the argument tends towards a particular value or infinity. Big O is a member of a family of notations invented by Paul Bachmann, Edmund Landau, and others, collectively called Bachmann–Landau notation or asymptotic notation. The letter O was chosen by Bachmann to stand for Ordnung, meaning the order of approximation.
Peter Seamus O'Toole was a British stage and film actor. He attended the Royal Academy of Dramatic Art and began working in the theatre, gaining recognition as a Shakespearean actor at the Bristol Old Vic and with the English Stage Company. In 1959 he made his West End debut in The Long and the Short and the Tall, and played the title role in Hamlet in the National Theatre's first production in 1963. Excelling on the London stage, O'Toole was known for his "hellraiser" lifestyle off it.
Shuhada Sadaqat is an Irish singer-songwriter. Her debut album, The Lion and the Cobra, was released in 1987 and charted internationally. Her second album, I Do Not Want What I Haven't Got received glowing reviews upon release and became her biggest success, selling over seven million copies worldwide. Its lead single, "Nothing Compares 2 U", was named the number one world single in 1990 by the Billboard Music Awards.
Shaquille Rashaun O'Neal, known commonly as "Shaq", is an American former professional basketball player who is a sports analyst on the television program Inside the NBA. O'Neal is regarded as one of the greatest basketball players and centers of all time. He is a 7-foot-1-inch (2.16 m) and 325-pound (147 kg) center who played for six teams over his 19-year career in the National Basketball Association (NBA) and is a four-time NBA champion.
Chicago O'Hare International Airport, typically referred to as Chicago O'Hare International Airport, O'Hare International Airport, O'Hare Airport, Chicago O'Hare, or simply O'Hare, is the main international airport serving Chicago, Illinois, located on the city's Northwest Side, approximately 17 miles (27 km) northwest of the Loop business district. Operated by the Chicago Department of Aviation and covering 7,627 acres (3,087 ha), O'Hare has non-stop flights to 228 destinations in North America, South America, the Caribbean, Europe, Africa, Asia, The Middle East, Oceania, and the North Atlantic region as of 2018.
The O.C. is an American teen drama television series created by Josh Schwartz that originally aired on the Fox network in the United States from August 5, 2003, to February 22, 2007, running a total of four seasons. "O.C." is an initialism of Orange County, the location in Southern California in which the series is set.
Georgia Totto O'Keeffe was an American modernist artist. She was known for her paintings of enlarged flowers, New York skyscrapers, and New Mexico landscapes. O'Keeffe has been called the "Mother of American modernism".
The Space Shuttle Challenger disaster was a fatal incident on January 28, 1986, in the United States space program where the Space ShuttleChallenger (OV-099) broke apart 73 seconds into its flight, killing all seven crew members aboard. It was the first fatal accident involving an American spacecraft in flight. The mission, designated STS-51-L, was the tenth flight for the Challenger orbiter and twenty-fifth flight of the Space Shuttle fleet. The crew was scheduled to deploy a communications satellite and study Halley's Comet while they were in orbit, in addition to taking school teacher Christa McAuliffe into space; the latter resulted in schoolchildren across the United States watching the disaster live on television. The spacecraft disintegrated 46,000 feet (14 km) above the Atlantic Ocean, off the coast of Cape Canaveral, Florida, at 11:39 a.m. EST.
Tatum Beatrice O'Neal is an American actress and author. She is the youngest person ever to win a competitive Academy Award, winning at age 10 for her performance as Addie Loggins in Paper Moon (1973) opposite her father, Ryan O'Neal. She also starred as Amanda Wurlitzer in The Bad News Bears (1976), followed by Nickelodeon (1976), and Little Darlings (1980). O'Neal later appeared in guest roles in Sex and the City, 8 Simple Rules and Law & Order: Criminal Intent. From 2006 to 2007, she portrayed Blythe Hunter in the My Network TV drama series Wicked Wicked Games.
The Irish are an ethnic group and nation native to the island of Ireland, who share a common history and culture. There have been humans in Ireland for about 33,000 years, and it has been continually inhabited for more than 10,000 years. For most of Ireland's recorded history, the Irish have been primarily a Gaelic people. From the 9th century, small numbers of Vikings settled in Ireland, becoming the Norse-Gaels. Anglo-Normans also conquered parts of Ireland in the 12th century, while England's 16th/17th-century conquest and colonisation of Ireland brought many English and Lowland Scots to parts of the island, especially the north. Today, Ireland is made up of the Republic of Ireland and Northern Ireland. The people of Northern Ireland hold various national identities including British, Irish, Northern Irish or some combination thereof.
The People of the State of California v. Orenthal James Simpson was a criminal trial in Los Angeles County Superior Court in which former National Football League (NFL) player, broadcaster and actor O. J. Simpson was tried and acquitted for the murders of his ex-wife Nicole Brown Simpson and her friend Ronald Goldman. The pair were stabbed to death outside Brown's condominium in the Brentwood neighborhood of Los Angeles on the night of June 12, 1994. The trial spanned eleven months, from the jury's swearing-in on November 9, 1994. Opening statements were made on January 24, 1995, and Simpson was acquitted of both counts of murder on October 3 of the same year, despite overwhelming forensic evidence against him. The trial came shortly after the 1992 Los Angeles riots, and it is agreed that, controversially, the defense capitalised on the anger among the city’s African-American community towards police to convince the majority-Black jury to acquit Simpson. The trial is often characterized as the trial of the century because of its international publicity, and has been described as the "most publicized" criminal trial in human history.
Conan Christopher O'Brien is an American television host, comedian, writer, and producer. He is best known for having hosted late-night talk shows for almost 28 years, beginning with Late Night with Conan O'Brien (1993–2009) and The Tonight Show with Conan O'Brien (2009–2010) on the NBC television network, and Conan (2010–2021) on the cable channel TBS. Before his hosting career, he was a writer for Saturday Night Live (1988–1991) and The Simpsons (1991–1993). He has also been host of the podcast series Conan O'Brien Needs a Friend since 2018 and is expected to launch a new show on HBO Max in 2022.
Orenthal James Simpson, nicknamed "Juice", is an American former football running back, actor, and broadcaster who played for the Buffalo Bills and San Francisco 49ers of the National Football League. Once a popular figure with the U.S. public, he is now best known for being tried for the murders of his former wife, Nicole Brown Simpson, and her friend Ron Goldman. Simpson was acquitted of the murders in criminal court but was later found responsible for both deaths in a civil trial.
Manti Malietau Louis Te'o is an American football linebacker who is a free agent.
Lupita Amondi Nyong'o is a Kenyan and Mexican actress. She is the recipient of several accolades, including an Academy Award, a Daytime Emmy Award, and two Screen Actors Guild Awards. She has received nominations for a Golden Globe Award, two BAFTA Awards, two Primetime Emmy Awards and a Tony Award.
