「Answers About Acronyms」を編集中
2026年2月23日 (月) 15:16時点におけるDanaMayfield044 (トーク | 投稿記録)による版 (内容を「<br>In physics, c typically refers to the speed of light in a vacuum, which is approximately 299,792,458 meters per second. It also represents the speed at which el<br>Rea…」で置換)