<div data-contents-type="text"><br class="ProseMirror-trailingBreak"></div><div data-contents-type="text"><span style="color: var(--glyphs200);"><strong>👨‍🏫 </strong></span><span style="color: var(--point3);"><strong>감상평</strong></span></div><ul><li><div data-contents-type="text"><span style="color: var(--glyphs200);">어둠의 속도가 빛의 사라지는 속도!</span></div></li></ul><div data-contents-type="text"><br class="ProseMirror-trailingBreak"></div><div data-contents-type="text"><br class="ProseMirror-trailingBreak"></div><div data-contents-type="text"><span style="color: var(--glyphs200);"><strong>📌</strong></span><span style="color: var(--point3);"><strong> 바쁘면 여기서부터!</strong></span></div><ul><li><div data-contents-type="text"><span style="color: var(--glyphs200);">01:05 : 빛과 어둠의 속도</span></div></li><li><div data-contents-type="text"><span style="color: var(--glyphs200);">01:40 : 빛의 속도를 측정한 방법</span></div></li></ul><div data-contents-type="text"><br class="ProseMirror-trailingBreak"></div><div data-contents-type="text"><div class="fe-video" contenteditable="false" data-contents-json="{&quot;video_id&quot;:&quot;P9F1IuLFntc&quot;,&quot;vendor&quot;:&quot;youtube&quot;,&quot;shorts&quot;:false}" data-contents-type="video" data-align="center"><div class="fe-video-inner" style="justify-content: center; display: flex; align-items: start;"><iframe src="https://www.youtube.com/embed/P9F1IuLFntc?wmode=opaque&amp;rel=0&amp;shorts=false" frameborder="0" allowfullscreen="true"></iframe></div></div></div><div data-contents-type="text"><span style="color: var(--glyphs200);">🎈 다른 영상이 궁금하시면 </span><a href="https://www.youtube.com/@%EC%82%AC%EB%AC%BC%EA%B6%81%EC%9D%B4/featured" title="사물궁이잡학지식">사물궁이잡학지식</a><span style="color: var(--glyphs200);"> 채널을 클릭해주세요!</span></div><div data-contents-type="text"><br class="ProseMirror-trailingBreak"></div>