October 9th is the 283rd day of the year. There are 83 days left. What symmetry.
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Today's number is 9
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9 is the largest single digit integer 9 is the square of a prime and is the second lowest such square
"Casting out nines" is a quick way of testing the calculations of sums, differences, products, and quotients of integers. It was known as long ago as the 12th Century. It is also the basis of a lot of "magic" tricks and puzzles. There used to be some based on the rotary phone dial too. Essentially, They are modulo 9 math.
A number is divisible by 9 if its digital root is 9. A number's digital root is the sum of its digits. If such sum is greater than one digit, then those digits are also summed, etc. Thus the digital root of 18 is 9 (8+1), and the digital root of 456 is 6 (4+5+6 = 15 and 1+5 = 6)
Now the fun: 1/9 = 0.11 followed by an infinite string of 1s 2/9 = 2 x 0.11 to infinity = 0.22 followed by an infinite string of 2s 3/9, of course, is 0.33 fol;lowed by an infinite string of 3s, etc. This brings us to 9/9 = 0.99 followed by an infinite string of 9s, which is also 1. Back in the stoneage, a test of calculators and computers was to perform the operation (1/9)x9 and see if it returned 1 or 0.9999999 etc.
Conversely: 123456789 x 9 = 111,111,111 123456789 x 18 = 222,222,222 (because 18 = 2 x 9) etc up to 123456789 x 72 = 888,888,888 (9 x 8 ) and 123456789 x 81 = 999,999,999 (9 x 9)
9 is the number of lives a domestic cat has 9 is the Jersey number worn by the inimitable Ted Williams. 9 is Fluorine. 9 is Organic: Five-digit produce PLU codes that begin with 9 are organic. A 9 sided polygon is a nonagon, aka an enneagon There are 9 justices on the US Supreme Court
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Title 9of the US Code is Arbitration.
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9 BCE was the Year of the Consulship of Drusus and Crispinus. Nero Claudius Drusus died and Emperor Ping of Han was born.
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9 CE was the Year of the Consulship of Sabinus and Camerinus The Rhine river was established as the boundary between the Latin- and German-speaking worlds, following the defeat of the Roman army, under the command of Varus, at the Battle of the Teutoburg Forest. (Varus again) Italy adopted the Lex Papia Poppaea outlawing celibacy and childless relationships, unlike later under the popes, who favored celibacy, though still abhorring childless relationships. (Confused much?) In China, Wang Mang founded the Xin dynasty, which lasted 16 years
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On this day in: 1264 -- The Kingdom of Castile conquered the city of Jerez, the source of Sherry 1410 -- The first known mention of the Prague astronomical clock. 1582 -- Adoption of the Gregorian calendar eliminated this day in Italy, Poland, Portugal and Spain. 1604 -- Somebody spotted Supernova 1604 1635 -- Roger Williams was banished from the Massachusetts Bay Colony 1740 -- Dutch colonists and slaves began to massacre ethnic Chinese in Batavia 1804 -- Hobart was founded 1820 -- Guayaquil declared its independence from Spain. (Good yerba mate' down there) 1824 -- Costa Rica abolished slavery 1847 -- Saint Bartholemy bolished slavery 1854 -- The siege of Sebastopol began 1873 -- The U.S. Naval Institute was established. 1874 -- The Treaty of Bern created the General Postal Union 1936 -- Generators at Boulder Dam began cranking out juice 1950 -- The Goyang Geumjeong Cave massacre started, with South Korean police killing 153 unarmed civilians. 1966 -- The Binh Tai massacre in Vietnam by ROK marines. 1967 -- Ernesto "Che" Guevara was executed for attempting to incite a revolution 1969 -- The National Guard was called in to suppress demonstrations about the "Chicago Eight" trial 1970 -- US puppet Lon Nol's fascist "Khmer Republic" dictatorship was proclaimed. 1981 -- France abolished capital punishment. Texas struggled to pick up the slack. 2012 -- The failed attempt to assassinate Malala Yousafzai took place.
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Born this day in:
1201 -- Robert de Sorbon, the founder of the College de Sorbonne 1837 -- Francis Wayland Parker, "the father of progressive education - Dewey" 1859 -- Alfred Dreyfus, as in Dryfus affair, as in J'accuse 1873 -- Karl Schwarzschild, physicist and astronomer 1890 -- Aimee Semple McPherson, religionist, founder of the International Church of the Foursquare Gospel 1893 -- Mario de Andrade, author and poet 1899 -- Bruce Catton, author and historian 1901 -- Alice Lee Jemison, Seneca political activist and journalist 1908 -- Lee Wiley, jazz singer 1918 -- E. Howard Hunt, spook, plumber, criminal, all around asshole 1918 -- Bebo Valdes, pianist, composer, and bandleader, arranger for the Tropicana 1920 -- Yusef Lateef, multi-instrumentalist, blended jazz with eastern music 1922 -- Olga Guillot, singer, the queen of bolero 1934 -- Abdullah Ibrahim, pianist and composer, did Mannenberg 1939 -- O. V. Wright, singer, songwriter and producer 1940 -- John Lennon, singer, songwriter, guitarist and producer 1941 -- Omali Yeshitela, activist, founder of the Uhuru Movement 1944 -- John Entwistle, English singer, songwriter, bassist, moose, and producer 1944 -- Nona Hendryx, singer, songwriter, producer, and actress 1945 -- Taiguara, singer 1947 -- France Gall, ye ye singer 1948 -- Jackson Browne, singer, songwriter and guitarists 1949 -- Rod Temperton, keyboard player, songwriter and producer 1960 -- Kenny Garrett, saxophonist 1961 -- Kurt Neumann, singer, songwriter, guitarist 1975 -- Sean Lennon, singer, songwriter, guitarist, producer, and actor
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Died this day in:
1943 -- Pieter Zeeman, physicist 1967 -- Che Guevara, physician, politician, commandante 1978 -- Jacques Brel, singer, songwriter and actor 1987 -- Clare Boothe Luce, author, playwright conservative activist ** 1999 -- Milt Jackson, Vibraphone player 2004 -- Jacques Derrida, philisopher 2007 -- Enrico Banducci, founder of the hungry i
** Ms. Luce, upon arriving at a doorway at the same time as Dorothy Parker stepped aside and motioned her through saying "Age before beauty", to which Ms. Parker blithely replied "Pearls before swine" and walked on through.
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Holidays, Holy Days, Festivals, Feast Days and such: Independence of Guayaquil from Spain in 1820 (Ecuador) World Post Day
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So, for music,
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Jerez
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The General Postal Union (Two-Fer)
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Che
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Aimee Semple McPherson
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Mario de Andrade
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Lee Wiley
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Bebo Valdes
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Yusef Lateef
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Olga Guillot
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Abdullah Ibrahim
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O. V. Wright
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John Lennon
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John Entwistle
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Nona Hendryx
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Taiguara
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France Gall
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Jackson Browne
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Rod Temperton
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Kenny Garrett
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Kurt Neumann
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Sean Lennon
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Jacques Brel
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Milt Jackson
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Bonus:
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Yusuf Lateef
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The Moose
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Jackson Browne
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photo from Smithsonan, no known copyright
Crossposted from http://caucus99percent.com