101. RE: Carbon14 Dating (was Palm Leaf Books) RE carbon14 dating (was Palm Leaf Books). To Multiple recipients of list exlibris@library.berkeley.edu ; Subject RE carbon14 dating (was Palm Leaf Books); http://palimpsest.stanford.edu/byform/mailing-lists/exlibris/1999/06/msg00094.ht

Table of Contents Search Date Prev Date Next ... Thread Index RE: carbon14 dating (was Palm Leaf Books) To Subject : RE: carbon14 dating (was Palm Leaf Books) From : "Rodger Friedman" <rf@warwick.net> Date : Mon, 14 Jun 1999 07:17:30 -0700 (PDT) Message-id 000501beb688$b28f5d20$3a1affcc@rodgerfr Sender : exlibris@library.berkeley.edu Norman refers to a technique that employs scanning augur microscopy to measure the distance of ink migration through paper fibers (or vellum or any other base material). The basic concept is that migration of ions from the ink is directly proportional to time. Augur spectroscopy, as I weakly understand it, analyzes the component elements of a substance at particle level. It works better for dating older documents (pre-1700) because the pre-modern recipe for ink used more iron, the preferred tracking element. A document forensics specialist with the U.S. Secret Service named Anthony Cantu delivered a paper on these techniques at, of all places, the MLA national convention in San Francisco in 1987, at a session on ink and paper organized by Jennie Mosser. Cantu was directly involved in the Hoffman investigation. Similar techniques were used in the investigation of the Shroud of Turin in the 1980s. Rodger Friedman Rare Book Studio One Mystic Circle Tuxedo, NY  10987 mailto:RF@Warwick.net

102. Radioactive Dating Explained Let’s start out with carbon 14 dating because it is the easiest to explain. Carbon 14. Carbon 14 dating is of limited use to geologists. http://www.ridgenet.net/~do_while/sage/v4i10f.htm

Feature Article - July 2000 by Do-While Jones Radioactive Dating Explained Last month we promised to explain all about radioactive dating. We are only able to keep part of that promise this month. This is a very technical subject, and we are going to try to explain it in terms that the average person can understand. But it will take more than one month. Let’s start out with carbon 14 dating because it is the easiest to explain. Once you know how carbon 14 dating works, then we can move on to heavier element radioactive dating and isochron next month Carbon 14 Carbon 14 dating is of limited use to geologists. It doesn’t tell you how old something is. It merely tells you when something died. Since most rocks were never alive (coal is the notable exception), it doesn’t work for most rocks. Furthermore, it is theoretically limited to fifty thousand years. Carbon 14 dating depends on the half-life of carbon 14. Before we can talk about its half-life, we need to understand its “whole” life. We need to understand how carbon 14 is “born”, and how it “dies”. The Birth of Carbon 14 Most carbon atoms have six positively charged protons and six uncharged neutrons. Since protons and neutrons weigh about the same, the atomic mass of ordinary carbon is 6 + 6 = 12. It is called “carbon 12,” which is abbreviated “

103. The Educational Encyclopedia, Physics, Nuclear Science, Radioactivity, Quantum P Carbon 14 dating radiocarbon dating is a method of obtaining age estimates on organic materials which has been used to date samples as old as 700,000 years. http://users.telenet.be/educypedia/education/physicsnuclear.htm

Science Animals Biology Botany Bouw ... Resources Physics Electricity Energy General overview Lasers ... Miscellaneous Nuclear science Sound Temperature Modern physics: nuclear science - r adiation - relativity Alternative energy research Atoms! part of Modern physics CERN's new antimatter factory CERN exploratorium the heart of the matter. Cern, the world largest particle accelerator Chernobyl: ten years on radiological and health impact Einsteins space time wrinkles relativity theory Fission and energy theory and operation of nuclear fission reactors Fusion Fusion explains research in controlled thermonuclear fusion Fusion basics Fusion energy plasma, fusion, nuclear education Heisenberg werner and the uncertainty principle the more precisely the position is determined the less precisely the momentum is known Ionizing radiation and radioactivity the properties of atoms and nuclei relevant to the understanding of ionizing radiation and radioactivity. It is concerned primarily with those properties relevant to accelerator produced radiation and radioactivity Modern physics special relativity, photons, atoms, particles and waves, Schrodinger's equation, many electron atoms, nuclear physics

104. Glossary CARBON 14 DATING Keys to the Past. Glossary. Carbon 14; Carbon 14 dating. A method of dating archaeological artefacts or layers based on the amount of a radioactive particle. http://www.keystothepast.info/durhamcc/K2P.nsf/K2PGlossary?readform&GLOSSARY=Car

105. Carbon Dating Understanding Carbon 14 dating. The following discussion focuses on Carbon 14 dating, the most widely used method of age estimation in the field of archaeology. http://www.flmnh.ufl.edu/natsci/vertpaleo/aucilla10_1/Carbon.htm

Understanding Carbon 14 dating By Mary Hudson The first of the three periods are the prehuman records, well-represented by the Latvis/Simpson Site in Little River. It provides an excellent record of fossils and sediments representing Aucilla life in the range of 30,000 years ago. The most important sites for the ARPP are those that feature the earliest human cultures. We have now identified at least five substantial Paleoindian sites, one or two in each of the three segments of the Aucilla River. Each Paleoindian site demands more carbon dates, meticulous documentation and thorough excavation. And thirdly, the ARPP has discovered several sites that represent human cultures and their environments after the terminal Pleistocene extinctions of the big mammals. The interpretation of data in the field of archaeology is often subjected to intense scrutiny. And when the interpretation of a site directly depends upon its estimated antiquity, the methods by which its age was determined become crucial. The following discussion focuses on Carbon 14 dating, the most widely used method of age estimation in the field of archaeology. Carbon 14 (hereafter C 14) was developed by the American chemist, Willard F. Libby at the University of Chicago in the 50's, for which he received the Nobel Prize in Chemistry in 1960. C 14 dating provided an accurate means of dating a wide variety of organic material in most archaeological sites, and indeed in most environments throughout the world. The method revolutionized scientists' ability to date the past. It freed archaeologists from trying to use artifacts as their only means of determining chronologies, and it allowed them for the first time to apply the same absolute time scale uniformly from region to region and continent to continent. Many older archaeological schemes were overturned with the advent of C 14 dating. Today it is possible to date sites, such as those studied by the ARPP, well back into the late Pleistocene with reliable and accurate chronologies.

106. Carbon 14 Dating Calculator Carbon 14 dating Calculator. To find the percent of Carbon 14 remaining after a given number of years, type in the number of years and click on Calculate. http://www.crixa.com/muse/html/java/carbdate.htm

Back to Index JavaScript Examples Changing Background Colours Mortgage Calculator Let The Banners Fly! Days Till The Millenium ... Password Carbon 14 Dating Calculator To find the percent of Carbon 14 remaining after a given number of years, type in the number of years and click on Calculate. Years C 14 halflife = 5730 Carbon 14 left = percent To find the years that have elapsed from how much Carbon 14 remains, type in the C 14 percent and click on Calculate. Percent C 14 C 14 halflife = 5730 Years = More about Carbon Dating In the 1940's Dr. Willard F. Libby invented carbon dating for which he received the Nobel Prize in chemistry in 1960. Above is a graph that illustrates the relationship between how much Carbon 14 is left in a sample and how old it is. Return to top of page

107. WHAT DOES CARBON 14 DATING PROVE? -- CREATIONISM PROVES EVOLUTION WHAT DOES CARBON 14 dating PROVE? What does carbon 14 dating really prove? WHAT DOES CARBON 14 dating PROVE? What does carbon 14 dating really prove? http://www.voy.com/28395/5.html

Contribute: Reserve your VoyUser name No-ads: Completely remove ads from your forum Owner Login VoyForums Homepage Create a New Forum VoyForums News Help Desk VoyForums Exchange FAQ - Frequently Asked Questions Directory/Categories Search VoyForums VoyUser Login VoyUser Login optional Contact Forum Admin Main index Post a new message Check update time ... Previous Message Date Posted: 18:15:27 09/05/01 Wed Author: David Wadsworth, Servant of the Most High and One True God Subject: WHAT DOES CARBON 14 DATING PROVE? WHAT DOES CARBON 14 DATING PROVE? What does carbon 14 dating really prove? That, that form or body, be it man, plant or animal lived and died and became a part of material "X" number of years ago. But does it necessarily mean that man, plant or animal lived on the earth? I am not a scientist but I've extensively studied science and worked as a Nuclear Scientist during the summer while in college. That doesn't know I know much at all about anything. I have heard it said by illiterate, radical religionists that science is a tool of Satan. Those people are saying that the Glory of God is not intelligence but ignorance. In truth, the glory of Satan is ignorance for God has said

108. 7.1.3 CONSTANTS AND DATA TYPES A REAL constant 0.0001216 - will be used in the formula for carbon 14 dating problem. Examples. -4.5, 0.12345, 30., 0.0, +245.6. http://www.aspire.cs.uah.edu/textbook/fortran7013.html

7.1.3 CONSTANTS AND DATA TYPES Computers are great data manipulators and mathematicians. However, they must be given data and numbers on which to act. Solving problems with a computer involves inputting some data, having the program manipulate the data in some way, and outputting the data in some different and more useful form. Example: Carbon Dating Carbon dating is a method for estimating the age of organic substances. It compares the amount of carbon 14 contained in the remains of the substance with the amount of carbon 14 that would have been in the object's environment at the time it was alive. A mathematical formula is used to determine the age of the object based on the carbon 14 proportion remaining in the substance. If a computer is used to solve this equation, there must be some means of communicating the carbon 14 proportion remaining in the object to the computer. Numerical and character values are established in a computer program by the use of constants and variables Constants are values used directly in the program.

109. Online Dating & Personal Ads With Photos Carbon 14 Dating - Complete Dating Serv Hello Guest Login! Carbon 14 dating. http://www.mate4all.com/search/female/dating/49/480/10/Female_Dating49.html

Hello Guest [ Login Carbon 14 Dating Carbon 14 Dating Home Register Now My Account I am a Man Woman Gay Lesbian Bi-sexual Man Bi-sexual Woman a Couple (man and woman) a Gay Couple (two men) a Lesbian Couple (two women) Seeking a Man Woman Gay Lesbian Bi-sexual Man Bi-sexual Woman a Couple (man and woman) a Gay Couple (two men) a Lesbian Couple (two women) Between Ages and Location ( in India Select City Outside India Any Agartala Agra Ahmedabad Ahmedgarh Ahmednagar Aizwal Ajmer Allahabad Almora Alwar Ambala Amritsar Aurangabad Ayodhya Bangalore Baramulla Bareilly Baroda Batinda Belgaum Benares Bharatpur Bharuch Bhavnagar Bhilai Bhillai Bhilwara Bhiwani Bhopal Bhubaneshwar Bhuj Calicut Chandigarh Chennai Chittore Chittorgarh Cochin Coimbatore Cooch Behar Coonoor Cuttack Dadri Daman Darjeeling Davangere Dehradun Delhi Deoghar Dhanbad Dharmashala Dibrugarh Durgapur Dwarka Erode Faizabad Faridabad Faridkot Ferozpur Gadwal Gandhinagar Gandhinagar Gangtok Gaya Ghaziabad Goa Gonda Gorakhpur Gulmarg Guntur Gurdaspur Gurgaon Gwalior Hissar Hyderabad Indore Jabalpur Jaipur Jaisalmer Jalandhar Jalandhar Jind Jodhpur Kanchipuram Kanpur Kharagpur Kolkata Kota Lucknow Ludhiana Madurai Mangalore Meerut Moradabad Mumbai Mussoorie Mysore Nagpur Nainital Nasik New Delhi Noida Ooty Panipat Patna Pilani Pimpri Pondicherry Port Blair Pune Puri Raipur Rajkot Ranchi Rewari Salem Secunderabad Shillong Shimla Sholapur Sonepat Srinagar Surat Tanjore Thane Tiruchirappalli Tiruppur Trishi Trivandrum Udaipur Vadodara Varanasi Vellore Vijayawada Vijaynagar Vishakhapatnam Vizag Warangal Yamunanagar Other Country Any India Afghanistan Albania Algeria Andorra Angola Anguilla

110. Lost City Expedition: Carbon 14 Dating How Old Is Lost City? Carbon 14 dating. The question “How old are you?” is often one of the first questions that comes to mind when meeting someone. http://www.lostcity.washington.edu/science/instruments/shorebasedanalyses/howold

How Old Is Lost City?- Carbon 14 Dating The attached picture shows the accelerator (the huge brown tube) in the foreground, and the source in the background (inside the fence). The carbon ion beam moves toward the camera. Radiocarbon dating is based on measurements of the number of C atoms, a rare and special isotope of carbon. While most carbon atoms are the stable isotope C, meaning that they have six protons and six neutrons and are stable over time, C begins to radioactively decay at well-known and constant rate (half of the remaining carbon-14 disappears every 5700 years). Thus, if we can count the number of C atoms compared to the number of C atoms, we can use algebra to back calculate the age of the sample. Of course, the trick is actually counting the atoms; as only one out of every trillion, 1x1012, carbon atoms is a C atom, in some cases we must accurately count only 1000 atoms! Radiocarbon dating is only accurate for samples younger than about 40,000 years, why? One method to accurately count carbon-14 atoms is called accelerator mass spectrometry C and C) get directed towards different detectors. Furthermore, high energies are required for the detector that counts the carbon-14 atoms to work properly. Every sample requires a few hours of preparation, about 10 minutes for the instrument to measure, and $300+ in instrument costs.

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