What lambda that does, it creates on the fly a function, as the program runs. That I can then pass around.
这里的入是在函数运行的时候,由一个函数创建的,然后我会传递这个值。
So if you demonstrate something by writing an intelligent answer just by outlining it and saying, well, what I would do is I would equate the energy lambda and then solve for lambda, I can see that you know what is going on.
如果你想证明一些东西,通过写下一些很天才的答案,仅仅大致说一下,好的,我想做的是能量相等,然后解出,我能看到你知道怎么做。
So, since the speed of light equals lambda nu, we can say that momentum is equal to h divided by lambda.
所以,既然光速等于λ乘以υ,我们可以得到动量等于h除以λ
So ignoring the lambda, what do we expect random dot uniform to do?
先忽略入,我们希望random。uniform会做些什么呢?
When d is large in comparison to lambda the obstacles cast shadows.
当距离大于λ,屏障也会投下阴影。
Well, the energy of the photon, hv we know from Planck, is h nu, which is hc over lambda.
好吧,光子,我们从普朗克那得知,它是,即hc/lambda,波长。
If I take lambda equals one angstrom, hc/lambda go through hc over lambda, you will discover that the energy of a photon with one angstrom as its wavelength is on the order of 12,400 electron volts.
如果我让波长等于一埃,能量为,你将发现光子的能量,当其波长为1埃的时候,相当于12,400电子伏特。
hc/lambda There is no hc over lambda.
这儿没有。
So, we can just plug it in. Speed is equal to the distance traveled, which is lambda over the time elapsed, which is 1 over nu. so, we can re-write that as speed is equal to lambda nu times nu, and it turns out typically this is reported in meters per second or nanometers per second.
经过的距离和所花的时间,我们把它们带进来,速度等于经过的距离,也即是lambda除以,所花的时间,通常它的单位,是米每秒或者纳米每秒。
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