https://en.formulasearchengine.com/index.php?action=history&feed=atom&title=Attenuation_coefficientAttenuation coefficient - Revision history2026-04-18T19:43:18ZRevision history for this page on the wikiMediaWiki 1.43.0-wmf.28https://en.formulasearchengine.com/index.php?title=Attenuation_coefficient&diff=255135&oldid=preven>Mikiemike: /* Definitions and formulae */ The half-value layer is about 69% ( ln(2)) of the penetration depth.2014-12-10T01:17:25Z<p><span class="autocomment">Definitions and formulae: </span> The half-value layer is about 69% ( ln(2)) of the <a href="/wiki/Penetration_depth" title="Penetration depth">penetration depth</a>.</p>
<a href="https://en.formulasearchengine.com/index.php?title=Attenuation_coefficient&diff=255135&oldid=17590">Show changes</a>en>Mikiemikehttps://en.formulasearchengine.com/index.php?title=Attenuation_coefficient&diff=17590&oldid=preven>Mark Arsten: Removing link(s) to "Material": deleted via Afd. (TW)2014-01-16T03:02:24Z<p>Removing link(s) to "Material": deleted via Afd. (<a href="/index.php?title=WP:TW&action=edit&redlink=1" class="new" title="WP:TW (page does not exist)">TW</a>)</p>
<a href="https://en.formulasearchengine.com/index.php?title=Attenuation_coefficient&diff=17590&oldid=255134">Show changes</a>en>Mark Arstenhttps://en.formulasearchengine.com/index.php?title=Attenuation_coefficient&diff=255134&oldid=prev219.88.142.12: /* Definitions and formulae */2012-06-21T06:45:49Z<p><span class="autocomment">Definitions and formulae</span></p>
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