52daqing 论坛,为全国人民代表(网名认证: "大庆家德帝", 请勿与"北京庆丰帝"弄混)所运营 - 通过执法, 产品与服务改变中国,社会, 为公众创造健康, 幸福, 安全与和谐的工作生活环境. 5秒注册, 匿名访问, 自由表达, 不受限. 我们的口号是: 有实力, 更有战绩. 我们主要擅长以人民, 习主席,法律, 美军,外星人的名义公开打击党员犯罪,专啃硬骨头. 关于本站读者群体的实力? 请先了解一下AlienPuppyHawaii.com的业务领域和读者, 例如TRUMP总统和CIA的实力.签证, 留学, 移民, 海外就业carbon dating, 利用其半衰期就是HOAX, 我们都 …回复帖子

回复帖子: carbon dating, 利用其半衰期就是HOAX, 我们都说过无数次. 我们用更先进的, 精准的. 全世界只有我们有这样的技术.

<blockquote><div class="quotetitle">引用于 访客 在 2026-11-03, 下午10:00</div><p>我们不想说太多的世界历史, 中国历史. 中国历史来说, 夏商周, 夏, 或夏商是否存在都不好说.  情况极度混乱. 学校里学的都是靠猜, 靠砖家自行决定, 臆测. </p>
<p>AI 骗你没商量. 关键AI它自己也是受害者. </p>
<p>&nbsp;</p>
<div class="pWvJNd j2luwe" data-sfc-root="c">
<div class="mZJni Dn7Fzd" dir="ltr" data-container-id="main-col" data-xid="VpUvz" data-sfc-root="c" data-ved="2ahUKEwiMy-qn4uuXAxUx1RoGHUn1OQwQ3KYQegYIAggJEAE" data-sfc-inited="2">
<div class="n6owBd awi2gc" data-sfc-cp="" data-sfc-root="c" data-hveid="CAIICRAC"><span data-subtree="aimfl,mfl">The half-life of carbon-14 is </span><mark class="b6AQX" data-wiz-attrbind="class=oWf1He_b/cFwyDc" data-sfc-root="c" data-ved="2ahUKEwiMy-qn4uuXAxUx1RoGHUn1OQwQuJAPegYIAggJEAM"><strong class="rQesXe MPyX" data-sfc-cp="" data-sfc-root="c">5,730 years</strong></mark>. [<a href="https://gml.noaa.gov/education/isotopes/decay.html">1</a>]</div>
<div class="yhAwj" data-sfc-cp="" data-sfc-root="c" data-sfc-inited="2"></div>
<div class="ZLzG0d ncoeY E8xBUb" role="heading" data-animation-nesting="" data-sfc-cp="" data-wiz-attrbind="aria-level=oWf1He_j/fLk2Md" data-sfc-root="c" data-hveid="CAIICRAI">Key Facts About Carbon-14 Half-Life</div>
<div class="" data-bfc="" data-sfc-cp="" data-sfc-root="c" data-ved="2ahUKEwiMy-qn4uuXAxUx1RoGHUn1OQwQi4wTegYIAggJEAo" data-hveid="CAIICRAK">
<ul>
<li class="Z1qcYe" data-sfc-cp="" data-sfc-root="c" data-hveid="CAIICRAL"><span class="iNqyIf" data-sfc-cp="" data-sfc-root="c"><strong class="rQesXe MPyX" data-sfc-cp="" data-sfc-root="c">Definition:</strong> A half-life is the time it takes for half of a radioactive isotope's atoms to decay. For carbon-14, 50% of the original amount decays into nitrogen-14 every 5,730 years.</span> [<a href="https://www.khanacademy.org/science/grade-10-physics-snc-aligned/x502b86fa259f0088:nuclear-physics/x502b86fa259f0088:half-life/v/carbon-14-dating-1">1</a>, <a href="https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:nuclear-physics/x0e04e0cb682fb793:half-life/v/carbon-14-dating-1">2</a>, <a href="https://gml.noaa.gov/education/isotopes/decay.html">3</a>]</li>
</ul>
</div>
<div class="" data-bfc="" data-sfc-cp="" data-sfc-root="c" data-ved="2ahUKEwiMy-qn4uuXAxUx1RoGHUn1OQwQi4wTegYIAggJEBA" data-hveid="CAIICRAQ">
<ul>
<li class="Z1qcYe" data-sfc-cp="" data-sfc-root="c" data-hveid="CAIICRAR"><span class="iNqyIf" data-sfc-cp="" data-sfc-root="c"><strong class="rQesXe MPyX" data-sfc-cp="" data-sfc-root="c">Step-by-Step Decay:</strong></span>
<ul class="XSq4R KI3fJ" data-sfc-cp="" data-sfc-root="c" data-hveid="CAIICRAS">
<li class="Z1qcYe" data-sfc-cp="" data-sfc-root="c" data-hveid="CAIICRAT"><span class="iNqyIf" data-sfc-cp="" data-sfc-root="c"><strong class="rQesXe MPyX" data-sfc-cp="" data-sfc-root="c">Start (0 years):</strong> 100% of carbon-14 remains.</span></li>
<li class="Z1qcYe" data-sfc-cp="" data-sfc-root="c" data-hveid="CAIICRAU"><span class="iNqyIf" data-sfc-cp="" data-sfc-root="c"><strong class="rQesXe MPyX" data-sfc-cp="" data-sfc-root="c">After 1 half-life (5,730 years):</strong> 50% remains.</span></li>
<li class="Z1qcYe" data-sfc-cp="" data-sfc-root="c" data-hveid="CAIICRAV"><span class="iNqyIf" data-sfc-cp="" data-sfc-root="c"><strong class="rQesXe MPyX" data-sfc-cp="" data-sfc-root="c">After 2 half-lives (11,460 years):</strong> 25% remains.</span></li>
<li class="Z1qcYe" data-sfc-cp="" data-sfc-root="c" data-hveid="CAIICRAW"><span class="iNqyIf" data-sfc-cp="" data-sfc-root="c"><strong class="rQesXe MPyX" data-sfc-cp="" data-sfc-root="c">After 3 half-lives (17,190 years):</strong> 12.5% remains.</span> [<a href="https://www.youtube.com/shorts/d2x372QYT98">1</a>, <a href="https://www.youtube.com/shorts/AgbiLYS2mB8">2</a>, <a href="https://gml.noaa.gov/education/isotopes/decay.html">3</a>]</li>
</ul>
</li>
</ul>
</div>
<div class="" data-bfc="" data-sfc-cp="" data-sfc-root="c" data-ved="2ahUKEwiMy-qn4uuXAxUx1RoGHUn1OQwQi4wTegYIAggUEAA" data-hveid="CAIIFBAA">
<ul>
<li class="Z1qcYe" data-sfc-cp="" data-sfc-root="c" data-hveid="CAIIFBAB"><span class="iNqyIf" data-sfc-cp="" data-sfc-root="c"><strong class="rQesXe MPyX" data-sfc-cp="" data-sfc-root="c">Radiocarbon Dating Limit:</strong> Because the amount of carbon-14 becomes too small to measure accurately after about 10 half-lives, <span class="R78TQ" data-sfc-cp="" data-sfc-root="c" data-sfc-inited="2"><span data-sfc-cp="" data-sfc-root="c" data-sfc-inited="2"><a class="gQWhZ" href="https://www.khanacademy.org/science/grade-10-physics-snc-aligned/x502b86fa259f0088:nuclear-physics/x502b86fa259f0088:half-life/v/carbon-14-dating-1" target="_blank" rel="noopener" data-sfc-cp="" data-sfc-root="c" data-ved="2ahUKEwiMy-qn4uuXAxUx1RoGHUn1OQwQy_kOegYIAggUEAI" data-hveid="CAIIFBAC" aria-label="Carbon-14 Dating Explained on Khan Academy. Link preview. Site: Khan Academy. Title: Carbon-14 dating: Part 1 (video) | Half life - Khan Academy. URL: https://www.khanacademy.org/science/grade-10-physics-snc-aligned/x502b86fa259f0088:nuclear-physics/x502b86fa259f0088:half-life/v/carbon-14-dating-1.">Carbon-14 Dating Explained on Khan Academy</a></span></span> works for organic materials up to roughly <strong class="rQesXe MPyX" data-sfc-cp="" data-sfc-root="c">50,000 to 60,000 years old</strong>.</span> [<a href="https://news.uchicago.edu/explainer/what-is-carbon-14-dating">1</a>, <a href="https://www.sciencedirect.com/topics/earth-and-planetary-sciences/radiocarbon-dating">2</a>, <a href="https://www.facebook.com/icrscience/posts/if-carbon-14-cant-last-beyond-100000-years-why-is-it-still-measurable-in-diamond/1462111749283860/">3</a>]</li>
</ul>
</div>
<ul class="XSq4R KI3fJ" data-sfc-cp="" data-sfc-root="c" data-hveid="CAIICRAJ"></ul>
<div class="yhAwj" data-sfc-cp="" data-sfc-root="c" data-sfc-inited="2"></div>
<div class="" data-bfc="" data-sfc-cp="" data-sfc-root="c" data-ved="2ahUKEwiMy-qn4uuXAxUx1RoGHUn1OQwQi4wTegYIAggVEAA" data-hveid="CAIIFRAA">
<div class="AHmQrc" data-sfc-cp="" data-sfc-root="c" data-hveid="CAIIFRAB" data-sfc-inited="2">
<div class="n6owBd awi2gc" data-sfc-cp="" data-sfc-root="c" data-hveid="CAIIFRAC">Would you like to learn how scientists use the <span class="iNqyIf" data-sfc-cp="" data-sfc-root="c">University of Chicago Radiocarbon Overview</span> to calculate the exact age of an artifact, or do you have a specific sample age you want to calculate?</div>
</div>
</div>
<div class="yhAwj" data-sfc-cp="" data-sfc-root="c" data-sfc-inited="2"></div>
</div>
</div>
<div class="" data-sfc-root="c">
<div class="ofHStc Dn7Fzd" data-container-id="rhs-col" data-ignore-copy="" data-sfc-root="c" data-ved="2ahUKEwiMy-qn4uuXAxUx1RoGHUn1OQwQ3aYQegYIAggJEBc" data-sfc-inited="2" data-empty="false">
<div class="oRipZb">
<div class="IQTBxd notranslate" dir="ltr" data-animation-skip="" data-xid="aim-aside-initial-corroboration-container" data-sfc-root="c" data-wiz-uids="oWf1He_1e,oWf1He_1f,oWf1He_1g,oWf1He_1h,oWf1He_1i" data-sfc-inited="2">
<div class="eFSEae" data-ved="2ahUKEwiMy-qn4uuXAxUx1RoGHUn1OQwQnc4VegYIAggJEBg">
<div class="lE72Gc"> </div>
</div>
</div>
</div>
</div>
</div></blockquote><br>

上传文件：
新增另一个文件...最大文件数量： 5 · 最大文件大小： 5,000 MB · 允许的文件类型： jpg,jpeg,gif,png,bmp,pdf,docx,xlsx,mp3,avi,png

取消

回复帖子: carbon dating, 利用其半衰期 就是HOAX, 我们都说过无数次. 我们用更先进的, 精准的. 全世界只有我们有这样的技术.

回复帖子: carbon dating, 利用其半衰期就是HOAX, 我们都说过无数次. 我们用更先进的, 精准的. 全世界只有我们有这样的技术.