請輸入想查詢的單字或片語
muon
US
・UK
A1 初級
n.名詞μ介子
影片字幕
肖恩-卡羅爾解釋為什麼物理學既簡單又不可能 | 完整訪談 (Sean Carroll explains why physics is both simple and impossible | Full Interview)
- Then we discovered, all the way back in the 1930s, a heavier cousin of the electron. This is called the muon. And famously, there was a physicist at Columbia, I. I. Rabi, who said, who ordered that? We did not know why the electron needed to have a heavier cousin involved. But now we know it's because this idea of the two quarks, up and down, and the two non-quarks, which we now call leptons, the electron and the neutrino, that pattern is repeated two more times. So there are three families of particles. There's the up quark and the down quark. But then there's heavier cousins, the charm quark and the strange quark. And even heavier cousins, the top quark and the bottom quark.
然後，我們在 20 世紀 30 年代發現了電子的一個更重的表親。這就是μ介子著名的是 哥倫比亞大學的物理學家 I. I.I. 拉比，他說，這是誰定的？我們當時不知道 為什麼電子需要有一個更重的表親參與進來但現在我們知道了 這是因為兩個夸克的概念 向上和向下 還有兩個非夸克 我們現在稱之為輕子 電子和中微子所以有三個粒子家族有上夸克和下夸克但還有更重的表親 粲夸克和奇異夸克還有更重的表親 上夸克和下夸克
- And then on the lepton side, we have the electron and a neutrino associated with the electron, which we cleverly call the electron neutrino. We have the muon, its heavier cousin, and a muon neutrino. And then we have a tau particle, which is heavier than the muon, and a tau neutrino. Six quarks, six leptons, arranged in three families.
在輕子方面，我們有電子和與電子相關的中微子，我們巧妙地稱之為電子中微子。我們有μ介子，它是更重的表親，還有一個μ介子中微子。還有比μ介子更重的陶粒子和陶中微子。六個夸克 六個輕子 分為三個家族
