{"id":919,"date":"2026-06-17T22:43:48","date_gmt":"2026-06-17T13:43:48","guid":{"rendered":"https:\/\/japper-tapchka.blog\/Diary\/?p=919"},"modified":"2026-07-09T21:26:40","modified_gmt":"2026-07-09T12:26:40","slug":"tohoku-2026-physics-3","status":"publish","type":"post","link":"https:\/\/japper-tapchka.blog\/Diary\/tohoku-2026-physics-3\/","title":{"rendered":"\u30102026\u6771\u5317\u5927\u7269\u7406 \u7b2c3\u554f\u3011\u6ce2\u52d5\u3092\u9ad8\u6821\u7269\u7406\u3067\u5fb9\u5e95\u89e3\u8aac\uff5c\u56f3\u89e3\u30fb\u30a4\u30e1\u30fc\u30b8\u4ed8\u304d"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u4eca\u56de\u306f\u6771\u5317\u5927\u5b662026\u5e74\u5ea6\u5165\u8a66\u306e\u7269\u7406\u7b2c3\u554f\u306b\u3064\u3044\u3066\u3001\u7d30\u304b\u304f\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\uff01\u554f\u984c\u306f\u89e3\u8aac\u306e\u90fd\u5408\u4e0a\u3001\u90e8\u5206\u7684\u306b\u63b2\u8f09\u3057\u3066\u304a\u308a\u307e\u3059\u304c\u3001\u30d5\u30ebPDF\u304c\u6b32\u3057\u3044\u5834\u5408\u306f<a href=\"https:\/\/admissions.tohoku.ac.jp\/ja\/materials\/ito\/\" title=\"\">\u5927\u5b66\u306e\u30db\u30fc\u30e0\u30da\u30fc\u30b8<\/a>\u3084\u4e88\u5099\u6821\u306e\u30b5\u30a4\u30c8\u304b\u3089<a href=\"https:\/\/admissions.tohoku.ac.jp\/ja\/adcms\/wp-content\/uploads\/2026\/05\/eq_2026Science.pdf\" title=\"\">\u5165\u624b<\/a>\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/mark><\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u524d\u63d0<\/h1>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"151\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/bd1b1c4ae217886fa225c35221692fb7-1024x151.png\" alt=\"\" class=\"wp-image-920\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/bd1b1c4ae217886fa225c35221692fb7-1024x151.png 1024w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/bd1b1c4ae217886fa225c35221692fb7-300x44.png 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/bd1b1c4ae217886fa225c35221692fb7-768x113.png 768w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/bd1b1c4ae217886fa225c35221692fb7.png 1392w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h1 class=\"wp-block-heading\">[\u554f(1)]<\/h1>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"781\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/6903756f1e95ad27afa9fac3c737aa01-1024x781.jpg\" alt=\"\" class=\"wp-image-921\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/6903756f1e95ad27afa9fac3c737aa01-1024x781.jpg 1024w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/6903756f1e95ad27afa9fac3c737aa01-300x229.jpg 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/6903756f1e95ad27afa9fac3c737aa01-768x585.jpg 768w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/6903756f1e95ad27afa9fac3c737aa01.jpg 1392w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"870\" height=\"1024\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/c0678576333001475059cbf5613fc939-870x1024.png\" alt=\"\" class=\"wp-image-923\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/c0678576333001475059cbf5613fc939-870x1024.png 870w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/c0678576333001475059cbf5613fc939-255x300.png 255w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/c0678576333001475059cbf5613fc939-768x904.png 768w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/c0678576333001475059cbf5613fc939-1305x1536.png 1305w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/c0678576333001475059cbf5613fc939-1024x1206.png 1024w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/c0678576333001475059cbf5613fc939.png 1392w\" sizes=\"auto, (max-width: 870px) 100vw, 870px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"463\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/f1ead0d20b6d0f96296395ecdbb58157-1024x463.png\" alt=\"\" class=\"wp-image-924\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/f1ead0d20b6d0f96296395ecdbb58157-1024x463.png 1024w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/f1ead0d20b6d0f96296395ecdbb58157-300x136.png 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/f1ead0d20b6d0f96296395ecdbb58157-768x347.png 768w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/f1ead0d20b6d0f96296395ecdbb58157.png 1392w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">(a) \u96a3\u306e\u5149\u7dda\u3068\u306e\u5149\u8def\u5dee<\/h2>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/05\/Tohoku2026-3_1a.png\" alt=\"\" class=\"wp-image-977 size-full\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/05\/Tohoku2026-3_1a.png 600w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/05\/Tohoku2026-3_1a-300x300.png 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/05\/Tohoku2026-3_1a-150x150.png 150w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u96a3\u308a\u3042\u3046\u5149\u7dda\u306e\u5149\u8def\u5dee\u306f\u6559\u79d1\u66f8\u901a\u308a\u306e\u8003\u3048\u65b9\u3067\u3059\u306d\uff01\u56f3\u306e\u3088\u3046\u306b\u3001\u5782\u7dda\u3092\u5f15\u304f\u3068\u7d4c\u8def\u5dee\u304c\u6c42\u3081\u3089\u308c\u307e\u3059\u3002<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{ \\Delta l = d \\sin \\theta } $$<script id=\"wp-hooks-js\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-includes\/js\/dist\/hooks.min.js?ver=f0f188028580e8dc1255\"><\/script>\n<script id=\"wp-i18n-js\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-includes\/js\/dist\/i18n.min.js?ver=1dfe7db3940c23ea9216\"><\/script>\n<script id=\"wp-i18n-js-after\">\nwp.i18n.setLocaleData( { 'text direction\\u0004ltr': [ 'ltr' ] } );\n\/\/# sourceURL=wp-i18n-js-after\n<\/script>\n<script  async id=\"mathjax-js\" src=\"https:\/\/cdnjs.cloudflare.com\/ajax\/libs\/mathjax\/2.7.7\/MathJax.js?config=TeX-MML-AM_CHTML\"><\/script>\n<\/div>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">(b) \u5f37\u3081\u5408\u3046\u6761\u4ef6<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u7d9a\u3044\u3066\u3001\u96a3\u308a\u3042\u3046\u5149\u7dda\u304c\u5f37\u3081\u3042\u3046\u6642\u306e\u6761\u4ef6\u3092\u8003\u3048\u307e\u3059\u3002\u56de\u6298\u683c\u5b50\u3067\u305d\u308c\u305e\u308c\u306e\u5149\u7dda\u306f\u540c\u4f4d\u76f8\u306e\u305f\u3081\u3001(a)\u3067\u6c42\u3081\u305f\u5149\u8def\u5dee\u304c\u6ce2\u9577\u306e\u6574\u6570\u500d\u3067\u3042\u308c\u3070OK\uff01<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{d \\sin \\theta _m = m \\lambda } $$\n$$ \\color{black}{ \\sin \\theta _m = \\frac{m \\lambda }{d} } $$<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">|\ud835\udf03| &lt;&lt; 1\u3088\u308a\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{ \\theta _m \\fallingdotseq \\sin \\theta _m = \\frac{m \\lambda }{d} } $$\n$$ \\color{black}{ \\therefore \\alpha = \\frac{ \\lambda }{d} } $$<\/div>\n\n\n\n<h1 class=\"wp-block-heading\">[\u554f(2)]<\/h1>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"553\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/f6c2cdc39f3e7b04c2c9fce74b0a7848-1024x553.jpg\" alt=\"\" class=\"wp-image-922\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/f6c2cdc39f3e7b04c2c9fce74b0a7848-1024x553.jpg 1024w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/f6c2cdc39f3e7b04c2c9fce74b0a7848-300x162.jpg 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/f6c2cdc39f3e7b04c2c9fce74b0a7848-768x415.jpg 768w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/f6c2cdc39f3e7b04c2c9fce74b0a7848.jpg 1392w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"833\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/7914751a5c4e50603f0c76377c710ecd-1024x833.jpg\" alt=\"\" class=\"wp-image-925\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/7914751a5c4e50603f0c76377c710ecd-1024x833.jpg 1024w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/7914751a5c4e50603f0c76377c710ecd-300x244.jpg 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/7914751a5c4e50603f0c76377c710ecd-768x625.jpg 768w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/7914751a5c4e50603f0c76377c710ecd.jpg 1392w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"906\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/bc8db8cb9b60f53ccc241f2dbe45ce51-1024x906.jpg\" alt=\"\" class=\"wp-image-926\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/bc8db8cb9b60f53ccc241f2dbe45ce51-1024x906.jpg 1024w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/bc8db8cb9b60f53ccc241f2dbe45ce51-300x266.jpg 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/bc8db8cb9b60f53ccc241f2dbe45ce51-768x680.jpg 768w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/bc8db8cb9b60f53ccc241f2dbe45ce51.jpg 1392w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"591\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/d7b3e240763c3b1a4d7830388577953b-1024x591.png\" alt=\"\" class=\"wp-image-927\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/d7b3e240763c3b1a4d7830388577953b-1024x591.png 1024w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/d7b3e240763c3b1a4d7830388577953b-300x173.png 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/d7b3e240763c3b1a4d7830388577953b-768x444.png 768w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/d7b3e240763c3b1a4d7830388577953b.png 1392w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">(a) \u6e9d\u3092\u901a\u3063\u305f\u5149\u7dda\u306e\u56de\u6298<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u6e9d\u3092\u901a\u3063\u305f\u5149\u7dda\u306e\u56de\u6298\u306f\u56de\u6298\u683c\u5b501\u3068\u3057\u3066\u8003\u3048\u307e\u3059\u3002\u554f(1)\u3068\u540c\u69d8\u306b\u3001\u96a3\u308a\u5408\u3046\u5149\u7dda\u306e\u5149\u8def\u5dee\u3092\u8003\u3048\u307e\u3057\u3087\u3046\uff01\u9593\u9694\u304c2\ud835\udc51\u306b\u306a\u3063\u305f\u3053\u3068\u3092\u8003\u616e\u3059\u308b\u3068\u5149\u8def\u5dee\u306f\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/05\/Tohoku2026-3_2a.png\" alt=\"\" class=\"wp-image-976 size-full\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/05\/Tohoku2026-3_2a.png 600w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/05\/Tohoku2026-3_2a-300x300.png 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/05\/Tohoku2026-3_2a-150x150.png 150w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{2d \\sin \\theta \u2019_m} $$<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u3055\u3089\u306b\u3001\u554f(1)\u3068\u540c\u69d8\u306b\u8fd1\u4f3c\u3092\u3057\u3066\u3001\u5f37\u3081\u5408\u3046\u6761\u4ef6\u3082\u8003\u3048\u308b\u3068\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{2d \\sin \\theta \u2019_m = m \\lambda } $$\n$$ \\color{black}{ \\theta \u2019_m \\fallingdotseq \\sin \\theta \u2019_m =\\frac{m \\lambda }{2d} } $$\n$$ \\color{black}{ \\alpha &#8216; = \\frac{ \\lambda }{2d} } $$<\/div>\n<\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u3053\u308c\u306f<\/mark><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">\u56de\u6298\u683c\u5b501\u304c\u5f37\u3081\u5408\u3046\u6761\u4ef6<\/mark><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u3067\u3042\u308a\u3001\u56de\u6298\u683c\u5b502\u3082\u611f\u899a\u304c\u7b49\u3057\u3044\u305f\u3081\u3001<\/mark><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">\u56de\u6298\u683c\u5b502\u306e\u5f37\u3081\u5408\u3046\u6761\u4ef6<\/mark><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u3067\u3082\u3042\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u307e\u3057\u3087\u3046\uff01<\/mark><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">(b) \u96a3\u308a\u3042\u3046\u5149\u7dda\u306e\u5149\u8def\u5dee<\/h2>\n\n\n\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-8f761849 wp-block-group-is-layout-flex\">\n<div class=\"wp-block-media-text is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/05\/Tohoku2026-3_2b-1.png\" alt=\"\" class=\"wp-image-975 size-full\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/05\/Tohoku2026-3_2b-1.png 600w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/05\/Tohoku2026-3_2b-1-300x300.png 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/05\/Tohoku2026-3_2b-1-150x150.png 150w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u5de6\u306e\u56f3\u3092\u898b\u3066\u3001\u96a3\u308a\u3042\u3046\u5149\u7dda\u306e\u5149\u8def\u5dee\u3092\u6c42\u3081\u3066\u3044\u304d\u307e\u3057\u3087\u3046\uff01\ud835\udc46<sub>0<\/sub>\u306e\u9752\u7dda\u90e8\u5206\u306e\u5149\u8def\u9577\u306f\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{l_0 = an + d \\sin \\theta \u2019_m} $$<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\ud835\udc46<sub>1<\/sub>\u306e\u8d64\u7dda\u90e8\u5206\u306e\u5149\u8def\u9577\u306f\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{l_1 = b + (a-b)n} $$\n$$ \\color{black}{ \\Delta l&#8217; = l_0 &#8211; l_1 = d \\sin \\theta \u2019_m + b(n-1)} $$<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">(a)\u306e\u7d50\u679c\u3082\u8003\u616e\u3059\u308b\u3068\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{ \\Delta l&#8217; = \\frac{m \\lambda }{2} + b(n-1)} $$<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">(c) \u30ac\u30e9\u30b9\u5e73\u677f\u3092\u53d6\u308a\u4ed8\u3051\u3066\u5149\u7dda\u304c\u540c\u4f4d\u76f8\u306e\u5834\u5408<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u3053\u3053\u307e\u3067\u3092\u6574\u7406\u3059\u308b\u3068\u3001\u56de\u6298\u683c\u5b501\u3068\u56de\u6298\u683c\u5b502\u305d\u308c\u305e\u308c\u304c\u5f37\u3081\u3042\u3046\u6642\u306e2\u3064\u306e\u56de\u6298\u683c\u5b50\u306e\u5149\u8def\u5dee\u304c\ud835\udee5\ud835\udc59\u2019\u3067\u3042\u308b\u3053\u3068\u3092\u6c42\u3081\u307e\u3057\u305f\u3002\ud835\udf03=0\u30672\u3064\u306e\u56de\u6298\u683c\u5b50\u304b\u3089\u306e\u5149\u7dda\u306f\u5f37\u3081\u3042\u3046\u305f\u3081\u3001\ud835\udc58\u3092\u6574\u6570\u3068\u3057\u3066\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{ \\Delta l&#8217; = d \\sin 0 + b(n-1) = b(n-1) = k \\lambda } $$<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\ud835\udf03=\ud835\udf03\u2019<sub>\ud835\udc5a<\/sub>\u3067\u3082\u5f37\u3081\u5408\u3046\u6642\u30012\u3064\u306e\u56de\u6298\u683c\u5b50\u306e\u5149\u8def\u5dee\ud835\udee5\ud835\udc59\u2019\u304c\u6ce2\u9577\u306e\u6574\u6570\u500d\u3067\u3042\u308c\u3070OK\u3067\u3059\uff01<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{ \\Delta l&#8217; = \\frac{m \\lambda }{2} + b(n-1) = \\left ( \\frac{m}{2} + k \\right ) \\lambda } $$\n$$ \\color{black}{ \\therefore m = 2, 4, 6} $$<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">(d) \u30ac\u30e9\u30b9\u5e73\u677f\u3092\u53d6\u308a\u4ed8\u3051\u3066\u5149\u7dda\u304c\u9006\u4f4d\u76f8\u306e\u5834\u5408<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">(c)\u3068\u306f\u9006\u306b\ud835\udf03=0\u30672\u3064\u306e\u56de\u6298\u683c\u5b50\u304b\u3089\u306e\u5149\u7dda\u306f\u5f31\u3081\u3042\u3046\u305f\u3081\u3001\ud835\udc58\u3092\u6574\u6570\u3068\u3057\u3066\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{ \\Delta l&#8217; = d \\sin 0 + b(n-1) = b(n-1) = \\left ( k + \\frac{1}{2} \\right ) \\lambda } $$<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\ud835\udf03=\ud835\udf03\u2019<sub>\ud835\udc5a<\/sub>\u3067\u5f37\u3081\u5408\u3046\u6642\u30012\u3064\u306e\u56de\u6298\u683c\u5b50\u306e\u5149\u8def\u5dee\ud835\udee5\ud835\udc59\u2019\u304c\u6ce2\u9577\u306e\u6574\u6570\u500d\u3067\u3042\u308c\u3070OK\u3067\u3059\uff01<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{ \\Delta l&#8217; = \\frac{m \\lambda }{2} + b(n-1) = \\left ( \\frac{m}{2} + k + \\frac{1}{2} \\right ) \\lambda } $$\n$$ \\color{black}{ \\therefore m = 1, 3, 5} $$<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">(e) \u96fb\u78c1\u6ce2\u306e\u5f0f<\/h2>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/05\/Tohoku2026-3_2e-1.png\" alt=\"\" class=\"wp-image-978 size-full\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/05\/Tohoku2026-3_2e-1.png 600w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/05\/Tohoku2026-3_2e-1-300x300.png 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/05\/Tohoku2026-3_2e-1-150x150.png 150w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u56de\u6298\u683c\u5b501\u304b\u3089\u89b3\u6e2c\u3055\u308c\u305f\u5149\ud835\udc38<sub>1<\/sub>\u306f\u56de\u6298\u683c\u5b502\u304b\u3089\u89b3\u6e2c\u3055\u308c\u305f\u5149\ud835\udc38<sub>2<\/sub>\u306e\u5149\u8def\u5dee\ud835\udee5\ud835\udc59\u2019\u3060\u3051\u9045\u308c\u305f\u5149\u3068\u7b49\u3057\u3044\u305f\u3081\u3001\ud835\udc61=\ud835\udc61\u3067\ud835\udc65=-\ud835\udee5\ud835\udc59\u2019\u306e\u4f4d\u7f6e\u306b\u3044\u305f\u6ce2\ud835\udc38<sub>2<\/sub>\u304c\ud835\udc61=\ud835\udc61<sub>0<\/sub>\u3067\ud835\udc65=0\u306b\u5230\u9054\u3057\u305f\u6ce2\ud835\udc38<sub>1<\/sub>\u3068\u3059\u308b\u3068\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{t_0 &#8211; t = \\frac{ \\Delta l&#8217;}{c} } $$\n$$ \\color{black}{t_0 = t + \\frac{ \\Delta l&#8217;}{c} } $$\n$$ \\color{black}{E_2 = A \\sin \\omega t_0} $$\n$$ \\color{black}{E_1 = A \\sin \\omega \\left ( t + \\frac{ \\Delta l&#8217;}{c} \\right ) } $$<\/div>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\"><\/div>\n<\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u3053\u3053\u3067\u3001\u6ce2\u52d5\u306e\u6ce2\u9577\u3068\u632f\u52d5\u6570\u306e\u95a2\u4fc2\u304b\u3089\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{ \\frac{ \\omega }{2 \\pi } \\lambda = c \\Leftrightarrow \\frac{ \\omega }{c} = \\frac{2 \\pi }{ \\lambda } } $$\n$$ \\color{black}{E_1 = A \\sin \\left ( \\omega t + \\frac{2 \\pi \\Delta l&#8217;}{ \\lambda } \\right ) } $$\n$$ \\color{black}{ \\therefore \\phi = \\frac{2 \\pi \\Delta l&#8217;}{ \\lambda } } $$<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">(f) \u91cd\u306d\u5408\u308f\u305b\u305f\u96fb\u78c1\u6ce2\u306e\u5f0f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u554f\u984c\u6587\u901a\u308a\u30012\u3064\u306e\u6ce2\u3092\u8db3\u3057\u5408\u308f\u305b\u3066\u52a0\u6cd5\u5b9a\u7406\u3092\u4f7f\u7528\u3057\u307e\u3057\u3087\u3046\uff01<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{E&#8217; = E_1 + E_2 = A \\left \\{ \\sin \\left ( \\omega t + \\phi \\right ) + \\sin \\omega t \\right \\} } $$<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u3053\u3053\u3067\u3001\u52a0\u6cd5\u5b9a\u7406\u304b\u3089\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\begin{align}\n    \\color{black}{ \\sin \\left ( \\omega t + \\phi \\right ) + \\sin \\omega t } &amp; \\color{black}{=} \\color{black}{2 \\sin \\frac{ \\omega t + \\phi + \\omega t}{2} \\cos \\frac{ \\omega t + \\phi &#8211; \\omega t}{2} } \\\\\n    &amp; \\color{black}{=} \\color{black}{2 \\cos \\frac{ \\phi }{2} \\sin \\left ( \\omega t + \\frac{ \\phi }{2} \\right )}\n\\end{align} $$<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u3088\u3063\u3066\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{E&#8217; = A \\left \\{ \\sin \\left ( \\omega t + \\phi \\right ) + \\sin \\omega t \\right \\} = 2A \\cos \\frac{ \\phi }{2} \\sin \\left ( \\omega t + \\frac{ \\phi }{2} \\right )} $$\n$$ \\color{black}{ \\therefore A&#8217; = 2A \\cos \\frac{ \\phi }{2} , \\phi &#8216; = \\frac{ \\phi }{2} } $$<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">(g) \u30ac\u30e9\u30b9\u5e73\u677f\u3092\u53d6\u308a\u4ed8\u3051\u305f\u6642\u306e\u30b0\u30e9\u30d5<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"823\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/d3f6cefbf9553ab75fa1ac65689de97a-1024x823.png\" alt=\"\" class=\"wp-image-928\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/d3f6cefbf9553ab75fa1ac65689de97a-1024x823.png 1024w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/d3f6cefbf9553ab75fa1ac65689de97a-300x241.png 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/d3f6cefbf9553ab75fa1ac65689de97a-768x618.png 768w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/d3f6cefbf9553ab75fa1ac65689de97a-1536x1235.png 1536w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/d3f6cefbf9553ab75fa1ac65689de97a.png 1552w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"429\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/1d5e1d629d53f1fe020640591f6ddd74-1024x429.png\" alt=\"\" class=\"wp-image-929\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/1d5e1d629d53f1fe020640591f6ddd74-1024x429.png 1024w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/1d5e1d629d53f1fe020640591f6ddd74-300x126.png 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/1d5e1d629d53f1fe020640591f6ddd74-768x322.png 768w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/1d5e1d629d53f1fe020640591f6ddd74-1536x644.png 1536w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/03\/1d5e1d629d53f1fe020640591f6ddd74.png 1553w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\ud835\udc5b, \ud835\udc4e, \ud835\udc4f\u306e\u5024\u3092\u4ee3\u5165\u3059\u308b\u3068\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{ \\Delta l&#8217; = \\frac{m \\lambda }{2} + \\frac{1}{4} \\lambda , \\phi = \\left ( m + \\frac{1}{2} \\right ) \\pi } $$\n$$ \\color{black}{A&#8217;^2 = 4A^2 \\cos ^2 \\frac{2m+1}{4} \\pi = 2A^2 \\left ( 1 + \\cos \\frac{2m+1}{2} \\pi \\right ) = 2A^2 ( \\because m \\in \\mathbb{Z} )} $$<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u3088\u3063\u3066\u3001\ud835\udf03=\ud835\udf03\u2019<sub>\ud835\udc5a<\/sub>\u306f\u4efb\u610f\u306e\ud835\udc5a\u3067\u5149\u306e\u5f37\u3055\u306f\u4e00\u5b9a\u3067\u3042\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\uff01\u307e\u305f\u3001\u554f(1)(a)\u3001\u554f(2)(a)\u304b\u3089\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{ \\theta&#8217;_m = \\frac{1}{2} \\theta _m } $$<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u3088\u3063\u3066\u3001\u9593\u9694\u306f\u56f32\u306e\u534a\u5206\u306b\u306a\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\uff01<\/mark><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u4ee5\u4e0a\u304b\u3089\u3001(\u30a6)\u3068\u6c7a\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u56de\u6298\u683c\u5b501\u30682\u305d\u308c\u305e\u308c\u306f\u5f37\u3081\u3042\u3046\u6761\u4ef6\u3092\u6e80\u305f\u3059\u304c\u3001<\/mark><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">\u56de\u6298\u683c\u5b501\u30682\u540c\u58eb\u306f\u540c\u4f4d\u76f8\u3067\u306f\u306a\u3044<\/mark><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u3053\u3068\u306b\u6ce8\u610f\uff01\u26a0\ufe0f<mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u26a0\ufe0f\u52d8\u9055\u3044\u3059\u308b\u3068\u3001\u8a18\u53f7\u306e\u9078\u629e\u304c\u8907\u96d1\u5316\u3057\u3066\u3057\u307e\u3044\u307e\u3059\u2026\u2026\uff08\ud835\udf03=\ud835\udf03\u2019<sub>\ud835\udc5a<\/sub><\/mark>\u306f\u56de\u6298\u683c\u5b501\u30682\u305d\u308c\u305e\u308c\u306f\u5f37\u3081\u3042\u3046\u6761\u4ef6\u306e\u305f\u3081\uff09<\/mark><\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u3042\u3068\u304c\u304d<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color 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