r/todayilearned 2026/5/27 22:29:36
【太陽の中から放たれた光子が、電荷を持つ粒子とぶつかった度に方向を変えると、表面にたどり着くのに10万年から170万年かかる】
1 : 風吹けば名無し (スレ主) ID:op
TIL a photon starting at the center of the Sun and changing direction every time it encounters a charged particle would take between 10,000 and 170,000 years to get to the surface
2 : 風吹けば名無し ID:reddit
光が遠い星から見えるのは、まず星から出てくるまでに、もう古い時代のものかもしれない！
3 : 風吹けば名無し ID:reddit
あなたは本当に、太陽が太陽フレアで地球にぶつかる度に、500万年前の先祖に恨みがあるからそう言うの?それはおかしいぞ。
4 : 風吹けば名無し ID:reddit
しかし、私は太陽の気持ちは理解できる。
5 : 風吹けば名無し ID:reddit
実は、光は無限に若い。光子は自分から見ると年をとらないから、どれだけ遠い所から来ても、ただ生まれただけだからだ。
しかし、光が星から出てくるのに、実際には何の問題もなかったのに、うまく出てくるのに何度も試行錯誤したことになる。地球に届くまでに何の問題もなかったのに、道中で何度も塞がれたことになる。
6 : 風吹けば名無し ID:reddit
正解を教えてくれればいいんだが、1つの光子は方向を変えることができないと思うんだが、光子の家族の系譜が代々受け継がれてきた結果ではないかと思っているんだ。
7 : 風吹けば名無し ID:reddit
光が方向を変えられないのに、眼鏡はどうやって機能するの？
8 : 風吹けば名無し ID:reddit
眼鏡は光の方向を変えているのではなく、光の周りの空間を変えて、それがあなたにとって光の方向が変わったように見えるからだ。
ワープドライブは望遠鏡が発明された翌日から作るべきだった
9 : 風吹けば名無し ID:reddit
一般的には変化するが、太陽では吸収されて再放出される
10 : 風吹けば名無し ID:reddit
吸収と再放出だ。実用上は同じである
11 : 風吹けば名無し ID:reddit
光の方向は変わらない。レンズは実際は時空を曲げており、光は直線をたどっているだけだ。
12 : 風吹けば名無し ID:reddit
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) Photons are like honey badgers, they don't care an...
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) It’s a meaningless difference honestly because all...
14 : 風吹けば名無し ID:reddit
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) I mean yes they are absorbed and readmitted but it...
15 : 風吹けば名無し ID:reddit
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) Not only *would* they take, they *do* take. ...
16 : 風吹けば名無し ID:reddit
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) Yep. My maths says that checks out. /s....
17 : 風吹けば名無し ID:reddit
数式が正しいんじゃないか確認した。全部通りそうだ。
18 : 風吹けば名無し ID:reddit
笑ったよ。ありがとう。