{"id":48856,"date":"2025-03-23T23:00:35","date_gmt":"2025-03-23T14:00:35","guid":{"rendered":"https:\/\/hitokotojisyo.com\/?p=48856"},"modified":"2025-03-23T23:06:12","modified_gmt":"2025-03-23T14:06:12","slug":"%e3%83%89%e3%83%ac%e3%82%a4%e3%82%af%e3%81%ae%e6%96%b9%e7%a8%8b-%e3%81%a9%e3%82%8c%e3%81%84%e3%81%8f%e3%81%ae%e3%81%bb%e3%81%86%e3%81%a6%e3%81%84%e3%81%97%e3%81%8d","status":"publish","type":"post","link":"https:\/\/hitokotojisyo.com\/?p=48856","title":{"rendered":"\u30c9\u30ec\u30a4\u30af\u306e\u65b9\u7a0b\u5f0f (\u3069\u308c\u3044\u304f\u306e\u307b\u3046\u3066\u3044\u3057\u304d)"},"content":{"rendered":"\n
\n
\n

Drake equation\u00a0<\/strong>\u8aad\u307f\uff1a\u30c9\u30ec\u30a4\u30af\u30a4\u30af\u30a8\u30fc\u30b7\u30e7\u30f3
\u30c9\u30ec\u30a4\u30af\u306e\u65b9\u7a0b\u5f0f\u00a0<\/strong>\u8aad\u307f\uff1a\u3069\u308c\u3044\u304f\u306e\u307b\u3046\u3066\u3044\u3057\u304d
\u3068\u306f\u3001<\/p>\n<\/div><\/div>\n\n\n\n

\u300e\u9280\u6cb3\u7cfb<\/a>\u306b\u304a\u3051\u308b\u901a\u4fe1\u53ef\u80fd\u306a\u6587\u660e<\/a>\u306e\u6570\u3092\u6c42\u3081\u308b\u305f\u3081\u306e\u5f0f\u300f<\/strong><\/p>\n\n\n\n

\u6982\u8981<\/a><\/a><\/h2>\n\n\n\n
\u8a73\u7d30\u226b<\/summary>\n

\u30c9\u30ec\u30a4\u30af\u306e\u65b9\u7a0b\u5f0f<\/strong>\u306f\u30011961\u5e74\u306b\u5929\u6587\u5b66\u8005\u30d5\u30e9\u30f3\u30af\u30fb\u30c9\u30ec\u30a4\u30af\u304c\u63d0\u6848\u3057\u305f\u3001\u9280\u6cb3\u7cfb<\/a>\u5185\u3067\u901a\u4fe1\u53ef\u80fd\u306a\u6587\u660e<\/a>\u304c\u5b58\u5728\u3059\u308b\u78ba\u7387\u3092\u6c42\u3081\u308b\u5f0f\u3067\u3042\u308b\u3002<\/p>\n\n\n\n

\u3053\u306e\u65b9\u7a0b\u5f0f<\/a>\u306f\u3001\u751f\u547d\u306e\u8a95\u751f\u3084\u77e5\u7684\u751f\u547d\u306e\u9032\u5316\u3001\u6587\u660e<\/a>\u306e\u5bff\u547d\u306a\u3069\u3001\u3044\u304f\u3064\u304b\u306e\u8981\u56e0\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u8a08\u7b97\u3059\u308b\u3053\u3068\u3067\u3001\u9280\u6cb3\u7cfb<\/a>\u5185\u306e\u6587\u660e<\/a>\u306e\u6570\u3092\u4e88\u6e2c\u3059\u308b\u3002<\/p>\n\n\n\n

\u5f0f\u306b\u306f\u3001\u6052\u661f<\/a>\u306e\u8a95\u751f\u7387\u3084\u60d1\u661f<\/a>\u306e\u5b58\u5728\u3001\u751f\u547d\u304c\u5b58\u5728\u3059\u308b\u78ba\u7387\u306a\u3069\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u3002<\/p>\n<\/details>\n\n\n\n

\u65b9\u7a0b\u5f0f<\/a><\/a><\/h2>\n\n\n\n
\u8a73\u7d30\u226b<\/summary>\n

N = R* \u00d7 fp \u00d7 ne \u00d7 fl \u00d7 fi \u00d7 fc \u00d7 L<\/strong><\/em><\/p>\n\n\n\n

L = \u901a\u4fe1\u53ef\u80fd\u306a\u6587\u660e<\/a>\u306e\u5bff\u547d<\/p>\n\n\n\n

N = \u9280\u6cb3\u7cfb<\/a>\u5185\u3067\u901a\u4fe1\u53ef\u80fd\u306a\u6587\u660e<\/a>\u306e\u6570<\/p>\n\n\n\n

R* = \u9280\u6cb3\u7cfb<\/a>\u5185\u3067\u65b0\u305f\u306b\u751f\u307e\u308c\u308b\u6052\u661f<\/a>\u306e\u6570<\/p>\n\n\n\n

fp = \u6052\u661f<\/a>\u306e\u3046\u3061\u3001\u60d1\u661f<\/a>\u7cfb\u3092\u6301\u3064\u3082\u306e\u306e\u5272\u5408<\/p>\n\n\n\n

ne = 1\u3064\u306e\u661f\u7cfb\u3042\u305f\u308a\u751f\u547d\u304c\u5b58\u5728\u3067\u304d\u308b\u60d1\u661f<\/a>\u306e\u5e73\u5747\u6570<\/p>\n\n\n\n

fl = \u751f\u547d\u304c\u767a\u751f\u3059\u308b\u78ba\u7387<\/p>\n\n\n\n

fi = \u77e5\u7684\u751f\u547d\u304c\u9032\u5316\u3059\u308b\u78ba\u7387<\/p>\n\n\n\n

fc = \u901a\u4fe1\u53ef\u80fd\u306a\u6587\u660e<\/a>\u306b\u9032\u5316\u3059\u308b\u78ba\u7387<\/p>\n<\/details>\n\n\n\n

\u8a9e\u6e90<\/a><\/a><\/h2>\n\n\n\n
\u8a73\u7d30\u226b<\/summary>\n

\u3053\u306e\u65b9\u7a0b\u5f0f\u306f\u3001\u30a2\u30e1\u30ea\u30ab\u306e\u5929\u6587\u5b66\u8005\u30d5\u30e9\u30f3\u30af\u30fb\u30c9\u30ec\u30a4\u30af\u306b\u3088\u3063\u30661961\u5e74\u306b\u63d0\u6848\u3055\u308c\u305f\u3082\u306e\u3067\u3001\u5b87\u5b99\u306b\u304a\u3051\u308b\u77e5\u7684\u751f\u547d\u306e\u53ef\u80fd\u6027\u3092\u8a55\u4fa1\u3059\u308b\u305f\u3081\u306b\u4f7f\u308f\u308c\u3066\u3044\u308b\u3002<\/p>\n<\/details>\n\n\n\n

\u95a2\u9023\u8a18\u4e8b<\/strong><\/h2>\n\n\n\n

\u9280\u6cb3\u7cfb<\/a><\/p>\n\n\n\n

\u65b9\u7a0b\u5f0f<\/a><\/p>\n\n\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"

Drake equation\u00a0\u8aad\u307f\uff1a\u30c9\u30ec\u30a4\u30af\u30a4\u30af\u30a8\u30fc\u30b7\u30e7\u30f3\u30c9\u30ec\u30a4\u30af\u306e\u65b9\u7a0b\u5f0f\u00a0\u8aad\u307f\uff1a\u3069\u308c\u3044\u304f\u306e\u307b\u3046\u3066\u3044\u3057\u304d\u3068\u306f\u3001 \u300e\u9280\u6cb3\u7cfb\u306b\u304a\u3051\u308b\u901a\u4fe1\u53ef\u80fd\u306a\u6587\u660e\u306e\u6570\u3092\u6c42\u3081\u308b\u305f\u3081\u306e\u5f0f\u300f \u6982\u8981 \u65b9\u7a0b\u5f0f \u8a9e\u6e90 \u95a2\u9023\u8a18\u4e8b \u9280\u6cb3\u7cfb \u65b9\u7a0b\u5f0f<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[109],"tags":[],"class_list":["post-48856","post","type-post","status-publish","format-standard","hentry","category-109"],"_links":{"self":[{"href":"https:\/\/hitokotojisyo.com\/index.php?rest_route=\/wp\/v2\/posts\/48856","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hitokotojisyo.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hitokotojisyo.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hitokotojisyo.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hitokotojisyo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=48856"}],"version-history":[{"count":4,"href":"https:\/\/hitokotojisyo.com\/index.php?rest_route=\/wp\/v2\/posts\/48856\/revisions"}],"predecessor-version":[{"id":48880,"href":"https:\/\/hitokotojisyo.com\/index.php?rest_route=\/wp\/v2\/posts\/48856\/revisions\/48880"}],"wp:attachment":[{"href":"https:\/\/hitokotojisyo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=48856"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hitokotojisyo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=48856"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hitokotojisyo.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=48856"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}