Dating ancient history

19-Mar-2020 17:31 by 4 Comments

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Nuclear laboratories, awash with funds and prestige, spun off the discovery of an amazing new technique — radiocarbon dating.The radioactive isotope carbon-14 is created in the upper atmosphere when cosmic-ray particles from outer space strike nitrogen atoms and transform them into radioactive carbon.

An example of the ingenious technical work and hard-fought debates underlying the main story is the use of radioactive carbon-14 to assign dates to the distant past.Their exquisitely sensitive instrumentation was originally developed for studies in entirely different fields including nuclear physics, biomedicine, and detecting fallout from bomb tests.(1) Much of the initial interest in carbon-14 came from archeology, for the isotope could assign dates to Egyptian mummies and the like.As for still earlier periods, carbon-14 dating excited scientists (including some climate scientists) largely because it might shed light on human evolution — the timing of our development as a species, and how climate changes had affected that.(2) It was especially fascinating to discover that our particular species of humans arose something like 100,000 years ago, no doubt deeply influenced by the ice ages.(3) A few scientists noticed that the techniques might also be helpful for the study of climate itself. D.) year numbering, sometimes secularized as "BCE" (Before Common Era) or "CE" (Common Era).What was the prevailing method of dating years in Western culture before this system came into use?It was invented, more or less, by Dionysus Exiguus (circa 470 – 544).

Before Bede's use of it, there was no use of a year number in everyday use in western Europe. The normal mode of specifying the year before that time (8th century) was by regnal years, or consular years (Rome), or Judges/Archons/Olympiads (Greece).But the Indian use of a dot and the subsequent use of the mathematical concept of zero, or how we quantify nothing, opened up a world of mathematical discoveries."This caused real philosophical problems for example with the Greeks, and many cultures are said to have almost thought it was heretical to talk about the concept of zero as a number," Mr Spencer said."For something so trivial, zero was at centre of so many important parts of mathematics.People who did calculus in high school remember derivatives, the consequence of the infinitely small going to zero underpins all of calculus."Computer code at its most basic is nothing but zeros and ones.We're talking about, having carbon dated this, this manuscript is between 200 and 400 AD.""But the creation of zero as a number in its own right, which evolved from the placeholder dot symbol found in the Bakhshali manuscript, was one of the greatest breakthroughs in the history of mathematics."Adam Spencer, the University of Sydney's mathematics ambassador, said zero historically has filled two roles — as a numerical symbol and as a mathematical concept."Historically in mathematics, these are two quite different things.Zero as a symbol, how do you write 37 and 3,007 as different numbers," Mr Spencer said."Some civilisations didn't have a symbol, they just left a space.Some of the carbon-14 might find its way into living creatures.

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    1” (Mainstream Rock #4, 1992), rejoined the band in 2005 for a one-off concert in London 1947 ● Sylvester James / → R&B/soul-disco singer and drag queen performer, “You Make Me Feel (Mighty Real)” (#36, UK #8, 1978), died from complications of AIDS on 12/16/1988, age 41 1948 ● Claydes Charles Smith / → Co-founder and lead guitarist of jazz-fusion then R&B/funk Kool & The Gang, “Jungle Boogie” (#4, 1973), died after a long illness on 6/20/2006, age 57 1954 ● Stella Barker / → Rhythm guitar for Brit all female ska/pop-rock The Belle Stars, “Sign Of The Times” (UK #3, 1983) and “Iko Iko” (#14, 1989) 1958 ● Buster Bloodvessel / (Douglas Trendle) → Silly stage antic performing, bald and outsized frontman and lead vocalist for ska revival Bad Manners, “Can Can” (UK #3, 1981) 1961 ● Colin Ferguson / → Bassist for Scottish synth-pop New Romantic quartet H2O, “Dream To Sleep” (UK #17, 1983) 1961 ● Paul Waaktaar-Savoy / (Pål Waaktaar Gamst) → Guitarist and songwriter for Norwegian synth-pop A-Ha, “Take On Me” (#1, 1985), the first band from Norway to score a #1 hit in the UK and US 1961 ● Scott Travis / → Drummer with speed metal Racer X, joined influential “New Wave” heavy metal band Judas Priest, “A Touch Of Evil” (Mainstream Rock #29, 1990) in 1989 1965 ● Trevor Bickers / → Lead guitarist for Brit indie psych-rock The House Of Love, “Shine On” (, 1990) 1967 ● Macy Gray / (Natalie Renee Mc Intyre) → Grammy-winning R&B/neo-soul vocalist, “I Try” (#5, 2000) 1967 ● William Du Val / → Singer, guitarist and songwriter for hard rock Madfly, which morphed into Comes With The Fall, joined alterna-metal/hard rock Alice In Chains in 2006, “Check My Brain” (Rock #1, 2009) 1969 ● Ce Ce Peniston / (Cecelia Peniston) → Dance-pop/disco diva, “Finally” (#5, 1991) 1969 ● Paddy Bloom / (Patrick Seacor) → Drummer for dance-glam-rock Scissor Sisters, “Filthy Gorgeous” (Dance/Club #1, 2005) 1970 ● Cheyne Coates / (April Coates) → Australian singer in dance-pop duo Madison Avenue, “Don’t Call Me Baby” (Dance/Club #1, 2000) 1970 ● Dean Fertita / → Multi-instrumentalist lead singer for indie rock The Waxwings from 1997 to 2005, then power pop The Raconteurs (“Steady, As She Goes,” #54, Alt Rock #1, 2006), stoner metal Queens Of The Stone Age, “No One Knows” (#51, Mainstream Rock #5, 2002) and supergroup The Dead Weather, issued a debut solo album in 2009 1971 ● Dolores O’Riordan / → Lead vocals for Irish jangle/dream pop-rock The Cranberries, “Linger” (#8, 1993) 1973 ● Anika Noni Rose / → Tony Award-winning American singer and actress in the motion picture roman à clef musical (2006) 1974 ● Nina Persson / → Vocals for Swedish pop-rock The Cardigans, “Lovefool” (#1, 1996) 1978 ● Foxy Brown / (Inga Marchand) → Member of overhyped hip hop music group The Firm, then solo rapper, “Hot Spot” (Rap #23, 1999) 1980 ● Kerry Katona / → Vocals for Brit dance-pop vocal trio Atomic Kitten, “Whole Again” (UK #1, 2000), left the group in 2001 for a career as a TV host September 07 1920 ● Al Caiola / (Alexander Emil Caiola) → Session guitarist for Buddy Holly, Frank Sinatra and dozens of others, jazz and pop bandleader and solo artist with over 50 easy listening instrumental albums in the 60s, 70s and 80s, best known for his hit versions of TV theme song “Bonanza” (#19, 1961) and movie theme song “The Magnificent Seven” (#35, 1961), died from natural causes on 11/9/2016, age 96 1921 ● Arthur Ferrante / → Julliard-trained pianist and, with Louis Teicher, one half of the easy listening piano duo Ferrante & Teicher, known for their instrumental renditions of classical pieces, movie themes and show tunes, including “Tonight” (#10, AC #2, 1961) and “Midnight Cowboy” (#8, AC #2, 1969), died from natural causes on 9/19/2009, age 87 1926 ● Ronnie Gilbert / → Singer, social activist and founding member and contralto vocals for left-leaning, influential, successful folk-pop The Weavers, collaborated on multiple albums and projects with Pete Seeger, Arlo Guthrie and other folk luminaries as well as mentoring younger folk musicians, participated in music festivals up to her death from natural causes on 6/6/2015, age 88 1930 ● Sonny Rollins / (Theodore Walter Rollins) → Grammy-winning jazz tenor saxophonist, session musician and bandleader, “St.

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