字幕表 動画を再生する 英語字幕をプリント You and I, and everything around us appear to exist in 3 dimensions. Up and down, front and back, left to right. But appearances can be deceptive. Many physicists now believe that reality is not, in fact, three-dimensional. Instead they think that the fundamental core of reality comes written in two-dimensional sheets, like this piece of paper. In this view our world is a three dimensional projection of information that's written on a two-dimensional surface, an ilusion much like a hologram. Clearly, this is insane. What are these sheets? Why would anyone think that reality is two-dimensional when everything we know appears in 3 dimensions? The answer lies in black holes. Black holes famously suck in everything around them and never let go. But what would happen if you were to throw something with a lot of information into a black hole? Something like a book or a hard drive. Physicist know that information can never be lost, only scrambled. So the information in our book can´t disappear forever into the black hole, never to be recovered. It must still exist somewhere accesible to us. Physicists say it´s written on the so called event horizon of a black hole. The two-dimensional surface that defines a point of no return. Likewise, physicists have proven that events occurring on a two-dimensional sheet are interchangeable with the description in three dimensions. Mathematically it's all the same. Which leaves us to wonder: Which is real? The three dimensions we observe or the two dimensional description that makes the math work? For Scientific American's Instant Egghead, I'm Michael Moyer. Is is possible for an electron to be in two places at once? Or for a cat to be both alive and dead at the same time? According to quantum mechanics, both scenarios are possible. And at the heart of this conceptual dilemma lies the wave function.
B1 中級 私たちの宇宙はホログラム?- インスタントエッグヘッド #63 (Is Our Universe a Hologram? - Instant Egghead #63) 450 18 rcnwxiqtnqj に公開 2021 年 01 月 14 日 シェア シェア 保存 報告 動画の中の単語