{"id":6434,"date":"2024-02-14T20:56:48","date_gmt":"2024-02-14T11:56:48","guid":{"rendered":"https:\/\/now0930.pe.kr\/wordpress\/?p=6434"},"modified":"2026-10-04T09:13:50","modified_gmt":"2026-10-04T00:13:50","slug":"%eb%8f%84%ed%94%8c%eb%9f%ac-%ed%9a%a8%ea%b3%bc","status":"publish","type":"post","link":"https:\/\/now0930.pe.kr\/wordpress\/%eb%8f%84%ed%94%8c%eb%9f%ac-%ed%9a%a8%ea%b3%bc\/","title":{"rendered":"\ub3c4\ud50c\ub7ec \ud6a8\uacfc"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\uc8fc\ud30c\uc218 \uce21\uc815 \uc2dc \ub3c4\ud50c\ub7ec \ud6a8\uacfc(Doppler Effect)\uc5d0 \ub300\ud558\uc5ec \uc124\uba85\ud558\uc2dc\uc624<\/p>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/02\/NeoStudio_20251230_190457_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4-\uae30\uc220\uc0ac-17.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"NeoStudio_20251230_190457_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4 \uae30\uc220\uc0ac 17\uc758 \uc0bd\uc785.\"><\/object><a id=\"wp-block-file--media-7a54b3e0-4d6a-4d0f-a3d7-f1d4411716f4\" href=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/02\/NeoStudio_20251230_190457_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4-\uae30\uc220\uc0ac-17.pdf\">NeoStudio_20251230_190457_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4 \uae30\uc220\uc0ac 17<\/a><a href=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/02\/NeoStudio_20251230_190457_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4-\uae30\uc220\uc0ac-17.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-7a54b3e0-4d6a-4d0f-a3d7-f1d4411716f4\">\ub2e4\uc6b4\ub85c\ub4dc<\/a><\/div>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"\ud2b9\uc218\uc0c1\ub300\uc131\uc774\ub860\uc758 E=mc^2 \uacf5\uc2dd \uc99d\uba85_\uc0c1\ub300\ub860\uc801 \ub3c4\ud50c\ub7ec\ud6a8\uacfc\" width=\"580\" height=\"326\" src=\"https:\/\/www.youtube.com\/embed\/2dBCuKLMYjc?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/02\/NeoStudio_20250512_001703_Shine-Orange.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"NeoStudio_20250512_001703_Shine Orange\uc758 \uc0bd\uc785.\"><\/object><a id=\"wp-block-file--media-ea808b11-3e63-49e9-9f8b-8147534c31bc\" href=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/02\/NeoStudio_20250512_001703_Shine-Orange.pdf\">NeoStudio_20250512_001703_Shine Orange<\/a><a href=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/02\/NeoStudio_20250512_001703_Shine-Orange.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-ea808b11-3e63-49e9-9f8b-8147534c31bc\">\ub2e4\uc6b4\ub85c\ub4dc<\/a><\/div>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/02\/NeoStudio_20260105_173100_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4-\uae30\uc220\uc0ac-17.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"NeoStudio_20260105_173100_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4 \uae30\uc220\uc0ac 17\uc758 \uc0bd\uc785.\"><\/object><a id=\"wp-block-file--media-6fac8f30-5ecc-4fe5-b2d7-402554161053\" href=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/02\/NeoStudio_20260105_173100_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4-\uae30\uc220\uc0ac-17.pdf\">NeoStudio_20260105_173100_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4 \uae30\uc220\uc0ac 17<\/a><a href=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/02\/NeoStudio_20260105_173100_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4-\uae30\uc220\uc0ac-17.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-6fac8f30-5ecc-4fe5-b2d7-402554161053\">\ub2e4\uc6b4\ub85c\ub4dc<\/a><\/div>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/02\/NeoStudio_20250326_143127_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4_\uae30\uc220\uc0ac14_037_Page.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"NeoStudio_20250326_143127_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4_\uae30\uc220\uc0ac14_037_Page\uc758 \uc0bd\uc785.\"><\/object><a id=\"wp-block-file--media-b44faceb-db83-4f8c-9232-24d046d1e375\" href=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/02\/NeoStudio_20250326_143127_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4_\uae30\uc220\uc0ac14_037_Page.pdf\">NeoStudio_20250326_143127_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4_\uae30\uc220\uc0ac14_037_Page<\/a><a href=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/02\/NeoStudio_20250326_143127_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4_\uae30\uc220\uc0ac14_037_Page.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-b44faceb-db83-4f8c-9232-24d046d1e375\">\ub2e4\uc6b4\ub85c\ub4dc<\/a><\/div>\n\n\n\n<figure class=\"wp-block-embed is-type-wp-embed is-provider-now-0930 wp-block-embed-now-0930\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"wp-embedded-content\" data-secret=\"oUlFCVRT7R\"><a href=\"https:\/\/now0930.pe.kr\/wordpress\/%ec%9c%a0%ec%86%8d-%ec%b8%a1%ec%a0%95\/\">\uc720\uc18d \uce21\uc815<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"\u201c\uc720\uc18d \uce21\uc815\u201d \u2014 now0930 \uc77c\uc9c0\" src=\"https:\/\/now0930.pe.kr\/wordpress\/%ec%9c%a0%ec%86%8d-%ec%b8%a1%ec%a0%95\/embed\/#?secret=9UG8lLeCy5#?secret=oUlFCVRT7R\" data-secret=\"oUlFCVRT7R\" width=\"580\" height=\"327\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/m.blog.naver.com\/twonkang00\/222093880659\">https:\/\/m.blog.naver.com\/twonkang00\/222093880659<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub3c4\ud50c\ub7ec \ud6a8\uacfc: \uad00\ucc30\uc790\uac00 \uc6c0\uc9c1\uc774\ub294 \ubb3c\uccb4\ub97c \ud5a5\ud558\uc5ec \uc804\ud30c\ub97c \ubc1c\uc0ac\ud558\uc600\uc744 \ub54c, \uad00\ucc30\uc790\uc640 \uc6c0\uc9c1\uc774\ub294 \ubb3c\uccb4\uc758 \uc0c1\ub300 \uc18d\ub3c4\uc5d0 \ub530\ub77c \uc8fc\ud30c\uc218\uac00 \ubcc0\uacbd\ub418\ub294 \ud604\uc0c1. \ubb3c\uccb4\uac00 \uad00\ucc30\uc790\ub97c \ud5a5\ud558\uc5ec \ub2e4\uac00\uc62c \uacbd\uc6b0\uc5d0\ub294 \ubc18\uc0ac\ub418\ub294 \uc8fc\ud30c\uc218\uac00 \ub192\uc544\uc9c0\uace0, \ubb3c\uccb4\uac00 \uad00\ucc30\uc790\ub97c \ub5a0\ub098 \uba40\uc5b4\uc9c8 \uacbd\uc6b0\uc5d0\ub294 \ubc18\uc0ac\ub418\ub294 \uc8fc\ud30c\uc218\uac00 \ub0ae\uc544\uc9c4\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc0ac\uc6a9 \uc608\uc2dc: \ucc28\ub7c9\uc758 \uc2a4\ud53c\ub4dc \uac74, \ub808\uc774\ub354<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/ko.wikipedia.org\/wiki\/%EB%8F%84%ED%94%8C%EB%9F%AC_%ED%9A%A8%EA%B3%BC\" target=\"_blank\" rel=\"noreferrer noopener\">\ub3c4\ud50c\ub7ec \ud6a8\uacfc(Doppler Effect)\ub294 \uc5b4\ub5a4 \ud30c\ub3d9\uc758 \ud30c\ub3d9\uc6d0\uacfc \uad00\ucc30\uc790\uc758 \uc0c1\ub300 \uc18d\ub3c4\uc5d0 \ub530\ub77c \uc9c4\ub3d9\uc218\uc640 \ud30c\uc7a5\uc774 \ubc14\ub00c\ub294 \ud604\uc0c1\uc744 \uac00\ub9ac\ud0b5\ub2c8\ub2e4<\/a><a href=\"https:\/\/ko.wikipedia.org\/wiki\/%EB%8F%84%ED%94%8C%EB%9F%AC_%ED%9A%A8%EA%B3%BC\" target=\"_blank\" rel=\"noreferrer noopener\"><sup>1<\/sup><\/a>. <a href=\"https:\/\/ko.wikipedia.org\/wiki\/%EB%8F%84%ED%94%8C%EB%9F%AC_%ED%9A%A8%EA%B3%BC\" target=\"_blank\" rel=\"noreferrer noopener\">\uc774 \ud604\uc0c1\uc740 \uc18c\ub9ac\uc640 \uac19\uc774 \ub9e4\uc9c8\uc744 \ud1b5\ud574 \uc6c0\uc9c1\uc774\ub294 \ud30c\ub3d9\uc5d0\uc11c\ub294 \uad00\ucc30\uc790\uc640 \ud30c\ub3d9\uc6d0\uc758 \ub9e4\uc9c8\uc5d0 \ub300\ud55c \uc0c1\ub300\uc18d\ub3c4\uc5d0 \ub530\ub77c \ud6a8\uacfc\uac00 \ubcc0\ud558\uba70, \ube5b\uc774\ub098 \uc77c\ubc18\uc0c1\ub300\uc131\uc774\ub860\uc5d0\uc11c\uc758 \uc790\uae30\ub825\uacfc \uac19\uc774 \ub9e4\uc9c8\uc774 \ud544\uc694 \uc5c6\ub294 \ud30c\ub3d9\uc758 \uacbd\uc6b0 \uad00\ucc30\uc790\uc640 \ud30c\ub3d9\uc6d0\uc758 \uc0c1\ub300\uc18d\ub3c4\ub9cc\uc774 \ub3c4\ud50c\ub7ec \ud6a8\uacfc\uc5d0 \uc601\ud5a5\uc744 \ubbf8\uce69\ub2c8\ub2e4<\/a><a href=\"https:\/\/ko.wikipedia.org\/wiki\/%EB%8F%84%ED%94%8C%EB%9F%AC_%ED%9A%A8%EA%B3%BC\" target=\"_blank\" rel=\"noreferrer noopener\"><sup>1<\/sup><\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub3c4\ud50c\ub7ec \ud6a8\uacfc\ub294 \uc8fc\ud30c\uc218 \uce21\uc815\uc5d0 \uc788\uc5b4 \uc911\uc694\ud55c \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \ub808\uc774\ub2e4\ub098 \ub808\uc774\uc800 \uc18d\ub3c4 \uce21\uc815\uae30 \ub4f1\uc5d0\uc11c\ub294 \ub3c4\ud50c\ub7ec \ud6a8\uacfc\ub97c \uc774\uc6a9\ud558\uc5ec \ubb3c\uccb4\uc758 \uc18d\ub3c4\ub97c \uce21\uc815\ud569\ub2c8\ub2e4. <a href=\"https:\/\/ko.wikipedia.org\/wiki\/%EB%8F%84%ED%94%8C%EB%9F%AC_%ED%9A%A8%EA%B3%BC\" target=\"_blank\" rel=\"noreferrer noopener\">\ubb3c\uccb4\uac00 \uad00\ucc30\uc790\uc5d0\uac8c \uc811\uadfc\ud558\uba74 \ud30c\ub3d9\uc758 \uc8fc\ud30c\uc218\ub294 \uc99d\uac00\ud558\uace0, \ubb3c\uccb4\uac00 \uad00\ucc30\uc790\ub85c\ubd80\ud130 \uba40\uc5b4\uc9c0\uba74 \ud30c\ub3d9\uc758 \uc8fc\ud30c\uc218\ub294 \uac10\uc18c\ud558\ub294\ub370, \uc774\ub7ec\ud55c \uc8fc\ud30c\uc218\uc758 \ubcc0\ud654\ub97c \uce21\uc815\ud568\uc73c\ub85c\uc368 \ubb3c\uccb4\uc758 \uc18d\ub3c4\ub97c \uc54c\uc544\ub0bc \uc218 \uc788\uc2b5\ub2c8\ub2e4<\/a><a href=\"https:\/\/ko.wikipedia.org\/wiki\/%EB%8F%84%ED%94%8C%EB%9F%AC_%ED%9A%A8%EA%B3%BC\" target=\"_blank\" rel=\"noreferrer noopener\"><sup>1<\/sup><\/a>.<\/p>\n\n\n\n&#8220;`html\n<div class=\"chapter19-wide\">\n\n  <h1>\ub3c4\ud50c\ub7ec \ud6a8\uacfc<\/h1>\n\n  <div class=\"subtitle\">\n    Doppler Effect \u00b7 Frequency Shift \u00b7 Moving Source \u00b7 Moving Observer \u00b7 Ultrasonic Velocity Measurement\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>1. \ub3c4\ud50c\ub7ec \ud6a8\uacfc \uae30\ubcf8 \uadf8\ub9bc<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \ubb3c\uccb4 \ub610\ub294 \uad00\ucc30\uc790\uac00 \uc6c0\uc9c1\uc774\uba74\n      \uad00\ucc30\ub418\ub294 \ud30c\uc7a5\uacfc \uc8fc\ud30c\uc218\uac00 \ub2ec\ub77c\uc9c4\ub2e4.\n    <\/p>\n\n    <pre>\n      \uc774\ub3d9 \ubb3c\uccb4\n\n        \u25cf  \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u25ba v\n\n           )))  )))  )))  )))\n                   \ud30c\ub3d9\n\n                              \u25c4\u2500\u2500 \uad00\ucc30\uc790\n    <\/pre>\n\n    <div class=\"formula\">\n      \u03bb = c\/f\n    <\/div>\n\n    <p>\n      \uc5ec\uae30\uc11c\n    <\/p>\n\n    <div class=\"formula\">\n      c : \ud30c\ub3d9\uc758 \uc804\ud30c\uc18d\ub3c4\n    <\/div>\n\n    <div class=\"formula\">\n      f : \uc8fc\ud30c\uc218\n    <\/div>\n\n    <div class=\"formula\">\n      \u03bb : \ud30c\uc7a5\n    <\/div>\n\n    <div class=\"memory\">\n      <strong>\n        \uc0c1\ub300\uc6b4\ub3d9\uc5d0 \uc758\ud574 \ud30c\uc7a5\uc774 \ubcc0\ud558\uba74\n        \uad00\ucc30\ub418\ub294 \uc8fc\ud30c\uc218\ub3c4 \ubcc0\ud55c\ub2e4.\n      <\/strong>\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>2. \ubb3c\uccb4\uac00 \uad00\ucc30\uc790 \ucabd\uc73c\ub85c \uc774\ub3d9<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \ud544\uae30\uc5d0\uc11c\ub294 \ubb3c\uccb4\uac00 \uad00\ucc30\uc790 \ubc29\ud5a5\uc73c\ub85c \uc774\ub3d9\ud558\uba74\n      \ud30c\uc7a5\uc774 \uac10\uc18c\ud55c\ub2e4\uace0 \uc815\ub9ac\ud55c\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      \u03bb&#8217; &lt; \u03bb\n    <\/div>\n\n    <p>\n      \ud30c\ub3d9\uc6d0\uc774 \uc18d\ub3c4 v\ub85c \uc774\ub3d9\ud558\uba74\n      \ud55c \uc8fc\uae30 \ub3d9\uc548 \uc774\ub3d9\ud55c \uac70\ub9ac\ub9cc\ud07c\n      \ud30c\uc7a5\uc774 \uac10\uc18c\ud55c\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      \u03bb&#8217;\n      =\n      (c-v)\/f\n    <\/div>\n\n    <p>\n      \uc0c8\ub85c\uc6b4 \uc8fc\ud30c\uc218\ub294\n    <\/p>\n\n    <div class=\"formula\">\n      f&#8217;\n      =\n      c\/\u03bb&#8217;\n    <\/div>\n\n    <p>\n      \uc774\ubbc0\ub85c\n    <\/p>\n\n    <div class=\"formula\">\n      f&#8217;\n      =\n      c\/(c-v)\n      \u00b7\n      f\n    <\/div>\n\n    <div class=\"memory\">\n      <strong>\n        \ubb3c\uccb4\uac00 \uc811\uadfc\ud558\uba74\n        \u03bb\ub294 \uac10\uc18c\ud558\uace0 f\ub294 \uc99d\uac00\ud55c\ub2e4.\n      <\/strong>\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>3. \ubb3c\uccb4\uac00 \uad00\ucc30\uc790\uc5d0\uc11c \uba40\uc5b4\uc9d0<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \ubb3c\uccb4\uac00 \uad00\ucc30\uc790\ub85c\ubd80\ud130 \uba40\uc5b4\uc9c0\ub294 \uacbd\uc6b0\uc5d0\ub294\n      \ud30c\uc7a5\uc774 \uc99d\uac00\ud55c\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      \u03bb&#8217; &gt; \u03bb\n    <\/div>\n\n    <p>\n      \ub530\ub77c\uc11c \ud544\uae30\uc5d0\uc11c\ub294\n    <\/p>\n\n    <div class=\"formula\">\n      f&#8217;\n      =\n      c\/(c+v)\n      \u00b7\n      f\n    <\/div>\n\n    <p>\n      \ub85c \uc815\ub9ac\ud55c\ub2e4.\n    <\/p>\n\n    <div class=\"memory\">\n      <strong>\n        \ubb3c\uccb4\uac00 \uba40\uc5b4\uc9c0\uba74\n        \u03bb\ub294 \uc99d\uac00\ud558\uace0 f\ub294 \uac10\uc18c\ud55c\ub2e4.\n      <\/strong>\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>4. \uc8fc\ud30c\uc218 \ubcc0\ud654\ub7c9<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \uc811\uadfc\ud558\ub294 \uacbd\uc6b0\n    <\/p>\n\n    <div class=\"formula\">\n      f&#8217;\n      =\n      1\/(1-v\/c)\n      \u00b7\n      f\n    <\/div>\n\n    <p>\n      \uc774\ubbc0\ub85c\n    <\/p>\n\n    <div class=\"formula\">\n      \u0394f\n      =\n      f&#8217; &#8211; f\n    <\/div>\n\n    <div class=\"formula\">\n      \u0394f\n      =\n      [\n      1\/(1-v\/c)\n      &#8211;\n      1\n      ]\n      f\n    <\/div>\n\n    <p>\n      v \u226a c\uc778 \uacbd\uc6b0\uc5d0\ub294\n    <\/p>\n\n    <div class=\"formula\">\n      \u0394f\n      \u2248\n      (v\/c)f\n    <\/div>\n\n    <p>\n      \uadf8\ub9ac\uace0\n    <\/p>\n\n    <div class=\"formula\">\n      c = f\u03bb\n    <\/div>\n\n    <p>\n      \uc774\ubbc0\ub85c\n    <\/p>\n\n    <div class=\"formula\">\n      \u0394f\n      \u2248\n      v\/\u03bb\n    <\/div>\n\n    <div class=\"memory\">\n      <strong>\n        \ud30c\uc7a5 \u03bb\ub97c \uc54c\uace0 \uc8fc\ud30c\uc218 \ubcc0\ud654\ub7c9 \u0394f\ub97c \uce21\uc815\ud558\uba74\n        \uc18d\ub3c4 v\ub97c \uacc4\uc0b0\ud560 \uc218 \uc788\ub2e4.\n      <\/strong>\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>5. \uc1a1\uc2e0\uae30\uc640 \uc218\uc2e0\uae30\uac00 \ud568\uaed8 \uc788\ub294 \uacbd\uc6b0<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \uc774\ubbf8\uc9c0\uc5d0\uc11c\ub294 \uc1a1\uc2e0\uae30\uc640 \uc218\uc2e0\uae30\uac00 \uac19\uc740 \uc704\uce58\uc5d0 \uc788\uace0,\n      \uc6c0\uc9c1\uc774\ub294 \ubb3c\uccb4\uc5d0\uc11c \ubc18\uc0ac\ub41c \ud30c\ub97c \ub2e4\uc2dc \uc218\uc2e0\ud558\ub294 \uacbd\uc6b0\ub97c \ub2e4\ub8ec\ub2e4.\n    <\/p>\n\n    <pre>\n      \uc1a1\uc2e0\uae30 \/ \uc218\uc2e0\uae30\n          \u2502\n          \u2502  fs\n          \u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u25ba\n          \u2502                  [ \uc774\ub3d9 \ubb3c\uccb4 ]\n          \u2502                      \u2500\u2500\u2500\u25ba v\n          \u2502\n          \u25c4\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\n               fr\n    <\/pre>\n\n    <p>\n      \uc1a1\uc2e0\ud30c\uac00 \uc6c0\uc9c1\uc774\ub294 \ubb3c\uccb4\uc5d0 \ub3c4\ub2ec\ud560 \ub54c\n      \ud55c \ubc88\uc758 Doppler Shift\uac00 \ubc1c\uc0dd\ud558\uace0,\n      \ubc18\uc0ac\ub418\uc5b4 \uc218\uc2e0\uae30\ub85c \ub3cc\uc544\uc62c \ub54c\n      \ub2e4\uc2dc \ud55c \ubc88 Doppler Shift\uac00 \ubc1c\uc0dd\ud55c\ub2e4.\n    <\/p>\n\n    <div class=\"memory\">\n      <strong>\n        \ubc18\uc0ac\ud615 Doppler \uce21\uc815\uc5d0\uc11c\ub294\n        \uc1a1\uc2e0 \u2192 \ubb3c\uccb4, \ubb3c\uccb4 \u2192 \uc218\uc2e0\uc758\n        \ub450 \ub2e8\uacc4\uc5d0\uc11c \uc8fc\ud30c\uc218 \ubcc0\ud654\uac00 \ubc1c\uc0dd\ud55c\ub2e4.\n      <\/strong>\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>6. \ubc18\uc0ac\ud615 \ub3c4\ud50c\ub7ec \uc8fc\ud30c\uc218<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \ud544\uae30\uc5d0\uc11c\ub294 \ubb3c\uccb4\uac00 \uc811\uadfc\ud558\ub294 \uacbd\uc6b0\n      \uccab \ubc88\uc9f8 \uc8fc\ud30c\uc218 \ubcc0\ud654\ub97c\n    <\/p>\n\n    <div class=\"formula\">\n      f<sub>1<\/sub>\n      =\n      (c+v)\/c\n      \u00b7\n      f<sub>s<\/sub>\n    <\/div>\n\n    <p>\n      \ub85c \ub098\ud0c0\ub0b8\ub2e4.\n    <\/p>\n\n    <p>\n      \ub2e4\uc2dc \ubc18\uc0ac\ub418\uc5b4 \uc218\uc2e0\uae30\ub85c \ub3cc\uc544\uc624\ub294 \uacbd\uc6b0\n      \uc218\uc2e0 \uc8fc\ud30c\uc218\ub294\n    <\/p>\n\n    <div class=\"formula\">\n      f<sub>r<\/sub>\n      =\n      c\/(c-v)\n      \u00b7\n      f<sub>1<\/sub>\n    <\/div>\n\n    <p>\n      \ub530\ub77c\uc11c\n    <\/p>\n\n    <div class=\"formula\">\n      f<sub>r<\/sub>\n      =\n      (c+v)\/(c-v)\n      \u00b7\n      f<sub>s<\/sub>\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>7. \ubc18\uc0ac\ud615 Doppler Shift<\/h2>\n\n  <div class=\"card\">\n\n    <div class=\"formula\">\n      \u0394f\n      =\n      f<sub>r<\/sub>\n      &#8211;\n      f<sub>s<\/sub>\n    <\/div>\n\n    <p>\n      \uc55e\uc758 \uc2dd\uc744 \ub300\uc785\ud558\uba74\n    <\/p>\n\n    <div class=\"formula\">\n      \u0394f\n      =\n      [\n      (c+v)\/(c-v)\n      &#8211;\n      1\n      ]\n      f<sub>s<\/sub>\n    <\/div>\n\n    <div class=\"formula\">\n      \u0394f\n      =\n      2v\/(c-v)\n      \u00b7\n      f<sub>s<\/sub>\n    <\/div>\n\n    <p>\n      v \u226a c\uc778 \uacbd\uc6b0\uc5d0\ub294\n    <\/p>\n\n    <div class=\"formula\">\n      \u0394f\n      \u2248\n      2v\/c\n      \u00b7\n      f<sub>s<\/sub>\n    <\/div>\n\n    <p>\n      \uadf8\ub9ac\uace0\n    <\/p>\n\n    <div class=\"formula\">\n      c = f<sub>s<\/sub>\u03bb\n    <\/div>\n\n    <p>\n      \uc774\ubbc0\ub85c\n    <\/p>\n\n    <div class=\"formula\">\n      \u0394f\n      \u2248\n      2v\/\u03bb\n    <\/div>\n\n    <div class=\"memory\">\n      <strong>\n        \ubc18\uc0ac\ud615 Doppler \uce21\uc815\uc5d0\uc11c\ub294\n        \uc655\ubcf5 \uacbd\ub85c \ub54c\ubb38\uc5d0 \uc8fc\ud30c\uc218 \ubcc0\ud654\ub7c9\uc774 \uc57d 2\ubc30\uac00 \ub41c\ub2e4.\n      <\/strong>\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>8. \uc785\uc0ac\uac01 \u03b8\ub97c \uace0\ub824\ud55c \uacbd\uc6b0<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \uc2e4\uc81c \uce21\uc815\uc5d0\uc11c\ub294 \ubb3c\uccb4\uc758 \uc774\ub3d9\ubc29\ud5a5\uacfc\n      \uc1a1\uc218\uc2e0\ud30c\uc758 \ubc29\ud5a5\uc774 \uc77c\uce58\ud558\uc9c0 \uc54a\uc744 \uc218 \uc788\ub2e4.\n    <\/p>\n\n    <pre>\n                       [ \ubb3c\uccb4 ]\n                         \u2500\u2500\u2500\u2500\u2500\u25ba v\n\n                           \/\n                          \/  \u03b8\n                         \/\n      \uc1a1\uc218\uc2e0\uae30 \u25cf\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\/\n    <\/pre>\n\n    <p>\n      Doppler \ud6a8\uacfc\uc5d0 \uae30\uc5ec\ud558\ub294 \uc18d\ub3c4\ub294\n      \ud30c\ub3d9 \ubc29\ud5a5 \uc131\ubd84\uc774\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      v<sub>r<\/sub>\n      =\n      v cos\u03b8\n    <\/div>\n\n    <p>\n      \ub530\ub77c\uc11c\n    <\/p>\n\n    <div class=\"formula\">\n      \u0394f\n      \u2248\n      2v cos\u03b8 \/ \u03bb\n    <\/div>\n\n    <div class=\"memory\">\n      <strong>\n        \uc785\uc0ac\uac01\uc774 \uc874\uc7ac\ud558\uba74\n        \uc2e4\uc81c \uc18d\ub3c4\uc758 cos\u03b8 \uc131\ubd84\ub9cc Doppler Shift\uc5d0 \uae30\uc5ec\ud55c\ub2e4.\n      <\/strong>\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>9. \ucd08\uc74c\ud30c \uc13c\uc11c\uc5d0 \uc758\ud55c \uc18d\ub3c4 \uce21\uc815<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \uc774\ubbf8\uc9c0\uc5d0\uc11c\ub294 \ucd08\uc74c\ud30c \uc13c\uc11c\uc640 \uc6c0\uc9c1\uc774\ub294 \ubb3c\uccb4 \uc0ac\uc774\uc758\n      \uac70\ub9ac\ub97c \uc774\uc6a9\ud55c \uc18d\ub3c4 \uce21\uc815\ub3c4 \ud568\uaed8 \uc815\ub9ac\ud55c\ub2e4.\n    <\/p>\n\n    <pre>\n      Source \/ Receiver\n\n            \u25cf\n             \\ \u03b8\n              \\\n               \\\n                [ \ubb3c\uccb4 ]\n                   \u2500\u2500\u2500\u25ba v\n\n         <------ L ------>\n    <\/pre>\n\n    <p>\n      \uc655\ubcf5\uac70\ub9ac \uad00\uacc4\ub97c \uc774\uc6a9\ud558\uba74\n    <\/p>\n\n    <div class=\"formula\">\n      vt cos\u03b8 \/ 2\n      =\n      L\n    <\/div>\n\n    <p>\n      \u03b8 \u2248 0\uc778 \uacbd\uc6b0\n    <\/p>\n\n    <div class=\"formula\">\n      L\n      =\n      vt\/2\n    <\/div>\n\n    <div class=\"memory\">\n      <strong>\n        \ucd08\uc74c\ud30c Time-of-Flight \ubc29\uc2dd\uc740\n        \uc655\ubcf5\uc2dc\uac04\uacfc \uc74c\uc18d\uc73c\ub85c \uac70\ub9ac\ub97c \uad6c\ud55c\ub2e4.\n      <\/strong>\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>10. \uc655\ubcf5\uc2dc\uac04\uacfc \uac70\ub9ac<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \ud544\uae30\uc5d0\uc11c\ub294\n    <\/p>\n\n    <div class=\"formula\">\n      v : \uc74c\uc18d [m\/s]\n    <\/div>\n\n    <div class=\"formula\">\n      t : \uc655\ubcf5\uc2dc\uac04 [s]\n    <\/div>\n\n    <p>\n      \ub85c \ub450\uace0\n    <\/p>\n\n    <div class=\"formula\">\n      L\n      =\n      vt cos\u03b8 \/ 2\n    <\/div>\n\n    <p>\n      \ub85c \uc815\ub9ac\ud55c\ub2e4.\n    <\/p>\n\n    <div class=\"memory\">\n      <strong>\n        \uc655\ubcf5 \uacbd\ub85c\uc774\ubbc0\ub85c \uce21\uc815\uac70\ub9ac\uc5d0\ub294 1\/2\uc774 \ud3ec\ud568\ub41c\ub2e4.\n      <\/strong>\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>11. \uc0c1\ub300\ub860\uc801 \uc2dc\uac04\uc9c0\uc5f0<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \uc774\ubbf8\uc9c0\uc5d0\ub294 \uc0c1\ub300\ub860\uc801 Doppler Effect\ub3c4 \ud568\uaed8 \uc815\ub9ac\ub418\uc5b4 \uc788\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      \u0394t&#8217;\n      =\n      1\n      \/\n      \u221a{\n      1-(v\/c)\u00b2\n      }\n      \u00b7\n      \u0394t\n    <\/div>\n\n    <p>\n      \uc989 \uc6c0\uc9c1\uc774\ub294 \uad00\ucc30\uacc4\uc5d0\uc11c \uc2dc\uac04\uac04\uaca9\uc774 \ubcc0\ud654\ud55c\ub2e4.\n    <\/p>\n\n    <div class=\"memory\">\n      <strong>\n        v\uac00 c\uc5d0 \uac00\uae4c\uc6cc\uc9c8\uc218\ub85d\n        \uace0\uc804\uc801 Doppler \uc2dd\uc774 \uc544\ub2c8\ub77c\n        \uc0c1\ub300\ub860\uc801 \uc2dc\uac04\uc9c0\uc5f0\uc744 \ud568\uaed8 \uace0\ub824\ud55c\ub2e4.\n      <\/strong>\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>12. \uc0c1\ub300\ub860\uc801 Doppler Frequency<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \ud544\uae30\uc5d0\uc11c\ub294 \uc774\ub3d9\ud558\ub294 \ubb3c\uccb4\uc758 \uc8fc\ud30c\uc218\ub97c\n      \uc2dc\uac04\uc9c0\uc5f0\uacfc \ud568\uaed8 \uc815\ub9ac\ud558\uc5ec\n    <\/p>\n\n    <div class=\"formula\">\n      f&#8217;\n      =\n      \u221a{\n      (1-v\/c)\n      \/\n      (1+v\/c)\n      }\n      \u00b7\n      f\n    <\/div>\n\n    <p>\n      \ud615\ud0dc\ub85c \ub098\ud0c0\ub0b8\ub2e4.\n    <\/p>\n\n    <p>\n      \ubc18\ub300 \ubc29\ud5a5\uc5d0\uc11c\ub294\n      \ubd80\ud638\uac00 \ubc14\ub00c\ub294 \ud615\ud0dc\ub85c \uae30\ub85d\ub418\uc5b4 \uc788\ub2e4.\n    <\/p>\n\n    <div class=\"memory\">\n      <strong>\n        \uc0c1\ub300\ub860\uc801 Doppler Effect\uc5d0\uc11c\ub294\n        \uc2dc\uac04\uc9c0\uc5f0\uacfc \uc0c1\ub300\uc6b4\ub3d9 \ud6a8\uacfc\ub97c \ub3d9\uc2dc\uc5d0 \uace0\ub824\ud55c\ub2e4.\n      <\/strong>\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>13. \uc800\uc18d \uadfc\uc0ac<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      v \u226a c\uc774\uba74\n    <\/p>\n\n    <div class=\"formula\">\n      (v\/c)\u00b2\n      \u2248\n      0\n    <\/div>\n\n    <p>\n      \ub85c \uadfc\uc0ac\ud560 \uc218 \uc788\uace0,\n      \uc0c1\ub300\ub860\uc801 \uc2dd\uc740 \uace0\uc804\uc801 Doppler \uad00\uacc4\uc5d0 \uac00\uae4c\uc6cc\uc9c4\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      f&#8217;\n      \u2248\n      1\/(1+v\/c)\n      \u00b7\n      f\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>14. \uc774\ubbf8\uc9c0 \ud575\uc2ec \uad00\uacc4<\/h2>\n\n  <div class=\"table-wrap\">\n\n    <table>\n\n      <thead>\n        <tr>\n          <th>\ud56d\ubaa9<\/th>\n          <th>\uc774\ubbf8\uc9c0 \ub0b4\uc6a9<\/th>\n        <\/tr>\n      <\/thead>\n\n      <tbody>\n\n        <tr>\n          <td><strong>\ud30c\uc7a5<\/strong><\/td>\n          <td>\n            \u03bb = c\/f\n          <\/td>\n        <\/tr>\n\n        <tr>\n          <td><strong>\uc811\uadfc \uc2dc<\/strong><\/td>\n          <td>\n            f&#8217; = c\/(c-v) \u00b7 f\n          <\/td>\n        <\/tr>\n\n        <tr>\n          <td><strong>\ud6c4\ud1f4 \uc2dc<\/strong><\/td>\n          <td>\n            f&#8217; = c\/(c+v) \u00b7 f\n          <\/td>\n        <\/tr>\n\n        <tr>\n          <td><strong>\uc800\uc18d Doppler Shift<\/strong><\/td>\n          <td>\n            \u0394f \u2248 (v\/c)f = v\/\u03bb\n          <\/td>\n        <\/tr>\n\n        <tr>\n          <td><strong>\ubc18\uc0ac\ud615 \uc218\uc2e0 \uc8fc\ud30c\uc218<\/strong><\/td>\n          <td>\n            f<sub>r<\/sub>\n            =\n            (c+v)\/(c-v)\n            \u00b7\n            f<sub>s<\/sub>\n          <\/td>\n        <\/tr>\n\n        <tr>\n          <td><strong>\ubc18\uc0ac\ud615 Doppler Shift<\/strong><\/td>\n          <td>\n            \u0394f \u2248 2v\/\u03bb\n          <\/td>\n        <\/tr>\n\n        <tr>\n          <td><strong>\uc785\uc0ac\uac01 \ud3ec\ud568<\/strong><\/td>\n          <td>\n            \u0394f \u2248 2v cos\u03b8 \/ \u03bb\n          <\/td>\n        <\/tr>\n\n        <tr>\n          <td><strong>\uac70\ub9ac \uce21\uc815<\/strong><\/td>\n          <td>\n            L = vt cos\u03b8 \/ 2\n          <\/td>\n        <\/tr>\n\n        <tr>\n          <td><strong>\uc0c1\ub300\ub860\uc801 \uc2dc\uac04\uc9c0\uc5f0<\/strong><\/td>\n          <td>\n            \u0394t&#8217;\n            =\n            \u0394t \/ \u221a(1-(v\/c)\u00b2)\n          <\/td>\n        <\/tr>\n\n      <\/tbody>\n\n    <\/table>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <div class=\"keywords\">\n    Doppler Effect, Doppler Shift,\n    Frequency Shift, Wavelength,\n    Ultrasonic Sensor, Velocity Measurement,\n    Moving Source, Moving Observer,\n    Reflection Doppler, Time of Flight,\n    Relativistic Doppler Effect\n  <\/div>\n\n<\/div>\n&#8220;`\n","protected":false},"excerpt":{"rendered":"<p>\uc8fc\ud30c\uc218 \uce21\uc815 \uc2dc \ub3c4\ud50c\ub7ec \ud6a8\uacfc(Doppler Effect)\uc5d0 \ub300\ud558\uc5ec \uc124\uba85\ud558\uc2dc\uc624 https:\/\/m.blog.naver.com\/twonkang00\/222093880659 \ub3c4\ud50c\ub7ec \ud6a8\uacfc: \uad00\ucc30\uc790\uac00 \uc6c0\uc9c1\uc774\ub294 \ubb3c\uccb4\ub97c \ud5a5\ud558\uc5ec \uc804\ud30c\ub97c \ubc1c\uc0ac\ud558\uc600\uc744 \ub54c, \uad00\ucc30\uc790\uc640 \uc6c0\uc9c1\uc774\ub294 \ubb3c\uccb4\uc758 \uc0c1\ub300 \uc18d\ub3c4\uc5d0 \ub530\ub77c \uc8fc\ud30c\uc218\uac00 \ubcc0\uacbd\ub418\ub294 \ud604\uc0c1. \ubb3c\uccb4\uac00 \uad00\ucc30\uc790\ub97c \ud5a5\ud558\uc5ec \ub2e4\uac00\uc62c \uacbd\uc6b0\uc5d0\ub294 \ubc18\uc0ac\ub418\ub294 \uc8fc\ud30c\uc218\uac00 \ub192\uc544\uc9c0\uace0, \ubb3c\uccb4\uac00 \uad00\ucc30\uc790\ub97c \ub5a0\ub098 \uba40\uc5b4\uc9c8 \uacbd\uc6b0\uc5d0\ub294 \ubc18\uc0ac\ub418\ub294 \uc8fc\ud30c\uc218\uac00 \ub0ae\uc544\uc9c4\ub2e4. \uc0ac\uc6a9 \uc608\uc2dc: \ucc28\ub7c9\uc758 \uc2a4\ud53c\ub4dc \uac74, \ub808\uc774\ub354 \ub3c4\ud50c\ub7ec \ud6a8\uacfc(Doppler Effect)\ub294 \uc5b4\ub5a4 \ud30c\ub3d9\uc758 \ud30c\ub3d9\uc6d0\uacfc [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[1185],"tags":[1314,1709,1771,1710,1726],"class_list":["post-6434","post","type-post","status-publish","format-standard","hentry","category-1185","tag-1314","tag-1709","tag-1771","tag-1710","tag-1726"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/posts\/6434","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/comments?post=6434"}],"version-history":[{"count":9,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/posts\/6434\/revisions"}],"predecessor-version":[{"id":9574,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/posts\/6434\/revisions\/9574"}],"wp:attachment":[{"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/media?parent=6434"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/categories?post=6434"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/tags?post=6434"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}