ADM-201 dump PMP dumps pdf SSCP exam materials CBAP exam sample questions

什么是不确定性原理? – 译学馆
未登录,请登录后再发表信息
最新评论 (0)
播放视频

什么是不确定性原理?

What is the Uncertainty Principle?

Quantum mechanics is weird, right?
量子力学很神奇 对吧?
But did you know that some of
但你是否知道
its supposed peculiarities are not unique to quantum physics
某些特性并不为量子物理所独有
but are just properties of waves in general?
而是波的一般性质?
Take the uncertainty principle
拿不确定性原理来说
It says that the better we know where particle is
它告诉我们 关于粒子的位置知道的越多
the less we know how about fast it’s going
关于粒子运动速度知道的就越少
There’s a limit to how much we can know
我们能知道的内容是有限的
But this isn’t just quantum weirdness
但这不仅是量子的神奇之处
it happens all the time with normal everyday waves!
日常可见的波也都带有这种性质
Remember that the frequency of a wave is how close the wave crests are to each other
记住波的频率就是波峰之间的距离
a low frequency wave doesn’t have nearly as much oomph as a high frequency one!
而低频率波没有高频率波那么有活力!
And the position of a wave is… well, where the wave is… mostly.
并且波的位置是 呃 就是它所在的地方
So where exactly is a wave?
所以波到底在哪里呢?
It’s spread out everywhere, right?
它是分散至任何地方的 是吧?
Ok, but for a wave pulse
好吧 但对于波动脉冲来说
it’s pretty easy to see where the wave is.
很容易看到波在哪里
So now that we know where the pulse is,
所以现在我们知道脉冲在哪了
what’s it’s frequency?
那它的频率是多少呢?
Well, a localized pulse doesn’t really “wave”,
局部的脉冲并不是“波”
so we can’t measure the frequency of its crests!
所以我们不能测量它的波峰频率!
And that’s the uncertainty principle in a nutshell –
简而言之 这就是不确定性原理
you can either know where a wave is or where it’s going,
你可以知道波在哪里 也可以知道它要去哪里
but not both at the same time
但是你不能同时知道这两件事情

发表评论

译制信息
视频概述

量子力学的奇妙之处

听录译者

收集自网络

翻译译者

Karasu

审核员

审核员CL

视频来源

https://www.youtube.com/watch?v=7vc-Uvp3vwg

相关推荐