Hydrogen peroxide is a chemical compound with the formula H2O2. In its pure form, it is a very pale blue liquid that is 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 and the fourth vowel letter in the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is o, plural oes.
The Romance languages, sometimes referred to as Latin languages or Neo-Latin languages, are numerous modern languages that evolved from Late Latin and its spoken form, often called Vulgar Latin. They are the only extant subgroup of the Italic languages in the Indo-European language family.
Sandra Day O'Connor is an American lawyer, former politician, and jurist who served as the first female associate justice of the Supreme Court of the United States from 1981 to 2006. She was both the first woman nominated and the first confirmed to the court. Nominated by President Ronald Reagan, she was considered a swing vote for the Rehnquist Court and the first five months of the Roberts Court.
Silicon dioxide, also known as silica, is an oxide of silicon with the chemical formula SiO2, most commonly found in nature as quartz. 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.
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.
William James O'Reilly Jr. is an American conservative commentator, journalist, author, and television host.
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".
On January 28, 1986, the Space Shuttle Challenger broke apart 73 seconds into its flight, killing all seven crew members aboard. 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. It was the first fatal accident involving an American spacecraft while in flight.
Paul James O'Grady was an English comedian, broadcaster, drag queen, actor, and writer. He achieved notability in the London gay scene during the 1980s with his drag persona Lily Savage, through which he gained broader popularity in the 1990s. O'Grady subsequently dropped the character and in the 2000s became the presenter of various television and radio shows, including The Paul O'Grady Show.
Ronald Antonio O'Sullivan is an English professional snooker player who is the world number one. Widely recognised as one of the most talented and accomplished players in the sport's history, he has won the World Snooker Championship seven times, a modern-era record he holds jointly with Stephen Hendry. He has also won a record seven Masters and a record seven UK Championship titles for a total of 21 Triple Crown titles, the most achieved by any player. He holds the record for the most ranking titles, with 39, and has held the top ranking position multiple times.
Irish people 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 starting in 1994, in which O. J. Simpson, a former National Football League (NFL) player, broadcaster and actor, 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 November 9, 1994 to October 3, 1995.
Conan Christopher O'Brien is an American television host, comedian, writer, and producer. O'Brien 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 the NBC sketch comedy series Saturday Night Live from 1988 to 1991, and the Fox animated sitcom The Simpsons from 1991 to 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.
Orenthal James Simpson is an American former football running back, actor, and broadcaster. He played in the National Football League (NFL) for 11 seasons, primarily with the Buffalo Bills, and is regarded as one of the greatest running backs of all time. However, Simpson's professional success was overshadowed by his trial and controversial acquittal for the murders of his former wife Nicole Brown and her friend Ron Goldman.
Lupita Amondi Nyong'o is a Kenyan-Mexican actress. She is the recipient of several accolades, including an Academy Award, and nominations for two Primetime Emmy Awards and a Tony Award.
