英語でRADIOCARBON DATINGはどんな意味ですか？
放射性炭素年代測定
放射性炭素年代測定は、放射性物質の測定技術であり、炭素-14の崩壊を利用して木材や革などの有機物の年齢を推定すると、現在までに約58,000〜62,000年になります。 1949年にウィラード・リビー（Willard Libby）によって世界に紹介され、ノーベル化学賞を受賞しました。 カーボンデートの導入以来、この方法はデッドシースクロールのサンプル、トリノのシュラウド、エジプトの王室時代を供給するのに十分なエジプトの人工物、氷の氷屋を含む多くのアイテムに使われてきました。 地球の大気には様々な同位体の炭素が含まれており、おおよそ一定の割合で存在します。 これらには、主な安定同位体および不安定同位体が含まれる。 光合成により、植物は大気中の二酸化炭素から両方の形態を吸収する。 生物が死ぬと、14Cと12Cの標準比が含まれますが、補充の可能性がなく14Cが崩壊すると、炭素14の割合は既知の一定の割合で減少します。 それが半減するのにかかる時間は、14Cの半減期として知られている。 したがって、有機物中の14Cの残りの割合の測定は、その年齢の推定値を与える。
英語辞典でのradiocarbon datingの定義
辞書中の放射性炭素年代測定の定義は、生きた植物の一部を形成したときに大気から獲得した放射性同位体14Cの含有量に基づいて、木材などの有機材料の年齢を決定する技術である。 14Cは、半減期5730年の窒素同位体14Nにまで崩壊する。 物質中に残っている放射性炭素の量の測定は、その年齢の推定値を与える。また、炭素-14年代測定とも呼ばれる。
«RADIOCARBON DATING»に関連する英語の本
以下の図書目録から
radiocarbon datingの使いかたを見つけましょう。
radiocarbon datingに関する本と英語文献で使われた文脈を提供するための簡単な抜粋文。
How does it work? What can it date? In answering these basic questions, this book also poses others, for radiocarbon is not quite as straightforward as it may seem.
2
Radiocarbon Dating: An Archaeological Perspective
3
Radiocarbon dating and Italian prehistory
The twelve papers in this volume originate from a conference held at the British School at Rome in 1991, and present a wide range of discussion on the problems and methodology in the use of radiocarbon dating.
Robin Skeates, Ruth Whitehouse, British School at Rome,
1994
4
Radiocarbon Dating: Proceedings of the Ninth International ...
Good,No Highlights,No Markup,all pages are intact, Slight Shelfwear,may have the corners slightly dented, may have slight color changes/slightly damaged spine.
Rainer Berger, Hans Eduard Suess,
1979
5
Quaternary
Dating Methods
Praise from the reviews: "This book is a must for any Quaternary scientist.
6
The Remarkable Metrological History of
Radiocarbon Dating [II]
5 % above what was believed to be the natural level, so the standard for
radiocarbon dating was defined as 0.95 times the l4C concentration of this
material, adjusted to a l2C reference value of -19 per mil (PDB). This value is
defined as ...
7
Quaternary
Dating Methods
RADIOCARBON DATING: SOME PROBLEMS AND POTENTIAL
DEVELOPMENTS .1. TERASMAE ABSTRACT Research on the radiocarbon
dating method during the last 20 years has increased almost exponentially in
terms of both volume ...
8
Radiocarbon dating New Zealand prehistory using marine shell
As a result, Schmidt proposes a chronology for the colonisation of New Zealand.
9
The Bible And
Radiocarbon Dating: Archaeology, Text And Science
This title brings together a leading team of archaeologists, Egyptologists, Biblical scholars, radiocarbon dating specialists and other researchers who have embraced radiocarbon dating as a significant tool to test hypotheses concerning the ...
Thomas Evan Levy, Thomas Higham,
2005
10
The Manchester Museum Mummy Project: Multidisciplinary ...
Radiocarbon Dating by K. C. Hodge and G. W. A. Newton Results are often
quoted as the difference between the sample. Summary Radiocarbon dating is
discussed with particular reference to Egyptian Chronology. Details of the
technique ...
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Climate Change Might Break Carbon Dating
All these dates come from radiometric dating — a process that looks at different ... several hundred years old using radiocarbon dating techniques," researcher ... «Smithsonian, 7月 15»
Carbon Dating Reveals One of the Oldest Known Copies of the Quran
Researchers at an Oxford lab were able to use radiocarbon dating to determine when the animal that the skin belonged to died. Their tests put the age of the ... «Smithsonian, 7月 15»
Radiocarbon Dating and Emission Interference
The miracle of radiocarbon dating and emission interference are starting to get in the way of each other. Back in the time before we found out we could date an ... «Apex Tribune, 7月 15»
Fossil fuels may cripple carbon dating accuracy
The way radiocarbon dating works is that it measures how much the fraction of carbon-14 versus non-radioactive carbon in an object has changed and therefore ... «iFreePress.com, 7月 15»
'Oldest' Koran fragments found in Birmingham University
What may be the world's oldest fragments of the Koran have been found by the University of Birmingham. Radiocarbon dating found the manuscript to be at least ... «BBC News, 7月 15»
Emissions from fossil fuels may limit carbon dating
Growing emissions from the burning of fossil fuels are threatening the effectiveness of radiocarbon dating, according to new research. The dating method has ... «BBC News, 7月 15»
Footprints found on BC's Calvert Island could be oldest in North …
Radiocarbon dating of two samples of material from the footprint showed it was 13,100 to 13,200 years old — older than any other evidence of humans in ... «CBC.ca, 6月 15»
Lower Hutt radiocarbon dating lab helps sort antiques from modern …
From giving a vodka brand its name to exposing sham antiques, Christine Prior's Lower Hutt radiocarbon dating laboratory is history's timekeeper. «Stuff.co.nz, 4月 15»
Illegal elephant tusk vendor convicted with help of radiocarbon dating
Authorities can now use radiocarbon dating to determine exactly what year an elephant was killed, showing whether its tusks were legally obtained or not. «CBC.ca, 3月 15»
Wits gets Africa's first AMS radiocarbon dating lab
How old is the first Accelerator Mass Spectrometry (AMS) facility in Africa? Less than a single day, and we don't even need to use AMS' ability to carbon date ... «htxt.africa, 7月 14»