{"id":7676,"date":"2007-09-12T06:22:00","date_gmt":"2007-09-12T06:22:00","guid":{"rendered":"http:\/\/melotopia.net\/b\/?p=7676"},"modified":"2007-09-12T06:22:00","modified_gmt":"2007-09-12T06:22:00","slug":"%eb%b0%98%ea%b0%90%ea%b8%b0%ec%9d%98-%ec%9d%b4%ed%95%b4","status":"publish","type":"post","link":"http:\/\/melotopia.net\/b\/?p=7676","title":{"rendered":"\ubc18\uac10\uae30\uc758 \uc774\ud574"},"content":{"rendered":"<div class=\"desc\">\n        \ubc18\uac10\uae30. Half Life\ub77c\uace0 \ubd80\ub974\ub294 \uac1c\ub150\uc774\ub2e4.<br \/>\n        <sup class=\"footnote\"><br \/>\n<a href=\"#footnote_465_1\" id=\"footnote_link_465_1\" onmouseout=\"tistoryFootnote.hide(465,1)\" onmouseover=\"tistoryFootnote.show(this,465,1)\" style=\"color:#f9650d;font-family:Verdana,Sans-serif\"><br \/>\n<span style=\"display:none\"><br \/>\n           [\uac01\uc8fc:<br \/>\n          <\/span><br \/>\n          1<br \/>\n          <span style=\"display:none\"><br \/>\n           ]<br \/>\n          <\/span><br \/>\n<\/a><br \/>\n<\/sup><\/p>\n<p>        \ubc18\uac10\uae30\ub294 \uc2dc\uac04\uc758 \ub2e8\uc704\ub97c \uac16\uace0 \uc788\ub294\ub370, \uadf8 \uc758\ubbf8\ub294 \ub300\ub7b5 \ubc18\uac10\uae30\ub9cc\ud07c\uc758 \uc2dc\uac04\uc774 \uc9c0\ub098\uba74 \uc8fc\uc5b4\uc9c4 \ubc29\uc0ac\uc131 \ub3d9\uc704\uc6d0\uc18c\uc758 \uc591\uc774 \uc808\ubc18\uc73c\ub85c \uc904\uc5b4\ub4e0\ub2e4\ub294 \ub73b\uc774\ub2e4.<\/p>\n<p>        \ubc29\uc0ac\uc131 \ub3d9\uc704\uc6d0\uc18c\uc758 \uc591\uc744 \uc9c0\ubc30\ud558\ub294 \ubc29\uc815\uc2dd\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4. n\uc744 \uac2f\uc218\ub77c\uace0 \ud558\uba74<br \/>\n        <br \/>\n        $-\\frac{dn}{dt}=\\lambda n$<br \/>\n        <br \/>\n        \ubb3c\ub860 \uc704\uc758 \ubc29\uc815\uc2dd\uc744 \ud480\uba74<br \/>\n        <br \/>\n        $n=n_0 e^{-\\lambda t}$<br \/>\n        <br \/>\n        \uac00 \ub2f5\uc774 \ub41c\ub2e4.<br \/>\n        <br \/>\n        \uc5ec\uae30\uc11c $n_0$\ub294 \ucd5c\ucd08\uc5d0 \uc874\uc7ac\ud558\ub358 \uac2f\uc218. $\\lambda$\ub294 \ub300\ub7b5 \ubc18\uac10\uae30\ub791 \ube44\uc2b7\ud55c \uc22b\uc790\uc774\ub2e4.<\/p>\n<p>        \ubb38\uc81c\ub294 \ubc29\uc0ac\uc131 \ub3d9\uc704\uc6d0\uc18c\uc758 \uc591\uc744 \uc9c0\ubc30\ud558\ub294 \ubc29\uc815\uc2dd\uc774 \uc65c \uc800\ub807\uac8c \uc8fc\uc5b4\uc9c0\ub294\uac00\uc774\ub2e4. \uc800 \ubc29\uc815\uc2dd\uc744 \ud55c\uad6d\ub9d0\ub85c \ubc88\uc5ed\ud558\uba74 &#8220;\ubc29\uc0ac\uc131 \ub3d9\uc704\uc6d0\uc18c\uac00 \uc904\uc5b4\ub4dc\ub294 \uc18d\ub825\uc740 \ud604\uc7ac \ub0a8\uc544\uc788\ub294 \uc591\uc5d0 \ube44\ub840\ud55c\ub2e4&#8221;\uc774\ub2e4. \uc544\ub2c8, \uc65c\uadf8\ub7f4\uae4c? \uc774\ub188\uc774\uace0 \uc800\ub188\uc774\uace0, \uc6d0\uc790\ud575\uc774 \uc788\uc73c\uba74 \uadf8\ub188\uc774 \uc870\uae08 \uc788\ub2e4 \ubd95\uad34\ud560 \ud655\ub960\uc740 \ub611\uac19\uc744 \ud150\ub370 \uc5b4\uc9f8\uc11c???<\/p>\n<p>        \uc790. \uc774\uc81c \uadf8\ub7fc \ub3d9\uc804\uc744 \ub358\uc838\ubcf4\uc790. \uc9c4\uc9dc\ub85c \uc774\ud574\ud558\uba74 \ub41c\ub2e4.<br \/>\n        <br \/>\n        \ub3d9\uc804 100\uac1c\ub97c \ub193\uace0 \ud55c\ubc88\uc5d0 \ub358\uc9c0\ub294\ub370, \uadf8\uc911 \ub4b7\uba74\uc774 \ub098\uc628 \uc560\ub4e4\uc740 \ub2e4 \ubd95\uad34\ud55c \uac83\uc73c\ub85c \uce58\uace0 \uc55e\uba74\uc774 \ub098\uc628 \uc560\ub4e4\ub9cc \uace8\ub77c\ub0b8\ub2e4.<br \/>\n        <br \/>\n        \uc5b4\ub5a4 \uc77c\uc774 \uc77c\uc5b4\ub0a0\uae4c? \uccab\ubc88\uc9f8 \uc2dc\ud589\uc5d0\uc11c\ub294 \ub300\ucda9 50\uac1c\uc815\ub3c4\uac00 \uc0b4\uc544\ub0a8\uc744 \uac83\uc774\uace0, \ub450\ubc88\uc9f8 \uc2dc\ud589\uc5d0\uc11c\ub294 \ub300\ucda9 25\uac1c\uc815\ub3c4\uac00 \uc0b4\uc544\ub0a8\uc744 \uac83\uc774\ub2e4. \ubb3c\ub860 \uc9c4\uc9dc \ub300\ucda9\uc774\uc9c0\ub9cc \uc138\ubc88\uc9f8 \uc2dc\ud589\uc5d0\uc11c\ub294 12\uac1c\uc815\ub3c4\uac00 \uc0b4\uc544\ub0a8\uaca0\uc9c0.<\/p>\n<p>        \uc6d0\uc790\ud575\uc774 \ub9ce\uc774 \ubaa8\uc5ec\uc788\ub294 \ubc29\uc0ac\uc131 \ub3d9\uc704\uc6d0\uc18c \ub369\uc5b4\ub9ac\uc5d0\uc11c\ub294 \uc774\ub7f0 \uc77c\uc774 \uc5f0\uc18d\uc801\uc73c\ub85c \uc77c\uc5b4\ub09c\ub2e4. \uc9c0\uae08 100\uac1c\uc758 \uc6d0\uc790\ud575\uc774 \uc0b4\uc544\ub0a8\uc740 \uc0c1\ud0dc\uc77c \ub54c, 1\ucd08 \ud6c4\uc5d0 \uc0b4\uc544\ub0a8\uc744 \ud655\ub960\uc774 \uc808\ubc18\uc774\ub77c\uace0 \ud558\uc790. \uadf8\ub7fc 1\ucd08 \ud6c4\uc5d0\ub294 \uadf8 \uc808\ubc18\uc774 \uc0ac\ub77c\uc9c4\ub2e4. \uc774 \ubc95\uce59\uc740 \ubaa8\ub4e0 \uac01\uac01\uc758 1\ucd08\ub9c8\ub2e4 \uc801\uc6a9\ub41c\ub2e4. \ub530\ub77c\uc11c \uc6d0\uc790\ud575\ub4e4\uc774 \ubd95\uad34\ud558\ub294 \uc18d\ub825\uc740 \uc77c\uc815\ud55c \uc18d\ub825\uc774 \uc544\ub2c8\ub77c \ub0a8\uc544\uc788\ub294 \uc591\uc5d0 \ube44\ub840\ud558\ub294 \uac83\uc774 \ub41c\ub2e4.<\/p>\n<div class=\"footnotes\">\n<ol class=\"footnotes\">\n<li id=\"footnote_465_1\">\n           Half Life\ub294 \ub0b4\uac00 \uc88b\uc544\ud558\ub294 \uac8c\uc784 \uc774\ub984\uc774\uae30\ub3c4 \ud55c\ub370, \uadf8 \uac8c\uc784\uc758 \uc81c\ubaa9\uc740 &#8220;\ubc18\ucabd\uc9dc\ub9ac \uc0b6&#8221;\uc744 \ub73b\ud558\uae30\ub3c4 \ud55c\ub2e4.<br \/>\n           <a href=\"#footnote_link_465_1\"><br \/>\n            [\ubcf8\ubb38\uc73c\ub85c]<br \/>\n           <\/a>\n<\/li>\n<\/ol>\n<\/div>\n<p><script type=\"text\/javascript\">\n         tistoryFootnote.add(465,1,\"Half Life\\ub294 \\ub0b4\\uac00 \\uc88b\\uc544\\ud558\\ub294 \\uac8c\\uc784 \\uc774\\ub984\\uc774\\uae30\\ub3c4 \\ud55c\\ub370, \\uadf8 \\uac8c\\uc784\\uc758 \\uc81c\\ubaa9\\uc740 \\\"\\ubc18\\ucabd\\uc9dc\\ub9ac \\uc0b6\\\"\\uc744 \\ub73b\\ud558\\uae30\\ub3c4 \\ud55c\\ub2e4.\");\n        <\/script><\/p>\n<div style=\"width:100%;margin-top:30px;clear:both;height:30px\">\n<div style=\"width:31px;float:left;\">\n<a href=\"\/toolbar\/popup\/abuseReport\/?entryId=465\" onclick=\"window.open(this.href, 'tistoryThisBlogPopup', 'width=550, height=510, toolbar=no, menubar=no, status=no, scrollbars=no'); return false;\"><br \/>\n<img data-recalc-dims=\"1\" decoding=\"async\" alt=\"\uc2e0\uace0\" src=\"https:\/\/i0.wp.com\/t1.daumcdn.net\/tistory_admin\/static\/ico\/ico_spam_report.png\" style=\"border:0\"\/><br \/>\n<\/a>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\ubc18\uac10\uae30. Half Life\ub77c\uace0 \ubd80\ub974\ub294 \uac1c\ub150\uc774\ub2e4. [\uac01\uc8fc: 1 ] \ubc18\uac10\uae30\ub294 \uc2dc\uac04\uc758 \ub2e8\uc704\ub97c \uac16\uace0 \uc788\ub294\ub370, \uadf8 \uc758\ubbf8\ub294 \ub300\ub7b5 \ubc18\uac10\uae30\ub9cc\ud07c\uc758 \uc2dc\uac04\uc774 \uc9c0\ub098\uba74 \uc8fc\uc5b4\uc9c4 \ubc29\uc0ac\uc131 \ub3d9\uc704\uc6d0\uc18c\uc758 \uc591\uc774 \uc808\ubc18\uc73c\ub85c \uc904\uc5b4\ub4e0\ub2e4\ub294 \ub73b\uc774\ub2e4. \ubc29\uc0ac\uc131 \ub3d9\uc704\uc6d0\uc18c\uc758 \uc591\uc744 \uc9c0\ubc30\ud558\ub294 \ubc29\uc815\uc2dd\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4. n\uc744 \uac2f\uc218\ub77c\uace0 \ud558\uba74 $-\\frac{dn}{dt}=\\lambda n$ \ubb3c\ub860 \uc704\uc758 \ubc29\uc815\uc2dd\uc744 \ud480\uba74 $n=n_0 e^{-\\lambda t}$ \uac00 \ub2f5\uc774 \ub41c\ub2e4. \uc5ec\uae30\uc11c $n_0$\ub294 \ucd5c\ucd08\uc5d0 \uc874\uc7ac\ud558\ub358 \uac2f\uc218. $\\lambda$\ub294 \ub300\ub7b5 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[2],"tags":[],"class_list":["post-7676","post","type-post","status-publish","format-standard","hentry","category-academic"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p8o6gA-1ZO","jetpack-related-posts":[],"jetpack_likes_enabled":true,"_links":{"self":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/posts\/7676","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7676"}],"version-history":[{"count":0,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/posts\/7676\/revisions"}],"wp:attachment":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7676"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7676"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7676"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}