So, if something cycles through five wavelengths in a single second, we would just say that the frequency of that wave is five per second.
如果一个东西在一秒,内经历了五个波长,我们就说这个波的,频率是每秒5次。
You have a whole bunch of runners and five of them have all run it in under 15 seconds.
你有许多跑步选手,其中五个都在15,秒内跑完了。
If it takes you 1 / 60 of a second to go around once, then you do it 60 times a second.
如果转一圈要 1 / 60 秒,那么一秒就转了60圈
And we won't wait here one hundred seconds for it to finish, but we're using the loop, we're updating a variable, and we're formatting it in a nice way.
我们将不会再这里等待100秒来等它完成,但是我们使用循环,我们更新一个变量,我们把它排成一个漂亮的格式。
We can spend late hours rendering something and then have a go-by in thirty seconds.
我们可以用后来的时间,对一些东西做艺术处理,然后跳过这三十秒。
Just stay in your seats for another 30 seconds as they're handing out your notes.
在位置上再坐30秒,等它们把讲义发给你们。
That there'd be no way at all to tell whether I've survived from one minute to the next, ? from one hour to the next?
我们完全无法知道,下一秒,下一个小时,我是否活着?
May be a second or two before pops up But it's going to come up.
在出声音前或许要等几秒,这就来了
Light travels basically a foot in a nanosecond. Simple rule of thumb.
光行进的速度是每纳秒一英尺,很简单的经验法则了。
That is, it doesn't take one second to go the first, and then two seconds to go to the second, and three seconds to go to third.
就是说,不是第一秒到第一排,第二秒第二排,第三秒第三排这样
You see somebody for about a second, you could make a guess.
你看对方一秒,就能猜到了。
Then he had a machine that granted each pigeon one piece of corn every fifteen seconds; that's very, frustratingly slow for a hungry pigeon to get one piece every fifteen seconds.
他们设计了一个能保证,每隔15秒给鸽子喂一玉米粒的装置,对饥饿的鸽子来说是杯水车薪,每15秒才只有一粒玉米
Haze poked his toe in his side, and he wheezed for a second and then was quiet. "Two things I can't stand," Haze said, "a man that ain't true, and one that mocks what is. You shouldn't ever have tampered with me if you didn't want what you got."
海斯把他的脚放在他身边,他喘息了一秒,之后便静了下来,海斯说,有两件事是我所不能忍受的,不诚实的人,嘲笑他人的人,你本不该,碰我的东西,如果你不想要得到什么“
And a few seconds later, he says "Mr. Bernstein, you don't expect me to keep my promises, do you?" And Berstein laughs like the little toady that he is and says, "Oh, yes!"
几秒之后他说,伯恩斯丁先生,你不希望我,恪守承诺吧,不是么,伯恩斯丁笑了“
And runners proved the doctors and scientists-- proved that they were right and ran the mile in two seconds and 4 minutes, one second, but no runner could run the mile in under 4 minutes, ever since the mile was actually timed-- when they started to time runs.
跑手们证明了医生和科学家…,证明了他们是对的,一英里跑四分钟两秒,四分钟一秒,但没有跑手能少于四分钟,从一英里跑计时以来-,当人们开始计时跑时。
suppose I asked you to time a 100 meter spring in the Olympics, but I give you a stopwatch that is measured in units of 15 seconds?
如果我要求你,在奥林匹克数给100米短跑计时,但我会给你一个秒表,它可以测出15秒的大小?
But occasionally there is this one little remnant of the old CGS system, centimeters-gram-second, and this is one.
但是也有些例外,在原来的厘米克秒制中,还有我们说的这个。
So we know that it'll go up for one second then it will turn around and come back.
我们知道了,物体在上升一秒后开始下降
If the units are supposed to come out in meters per second and you get seconds per meter, what do you figure the chances of that problem being right are?
因为如果单位本应该是米每秒,但你写的是秒每米,你认为这个题目,还有正确的机会吗?
> Once we changes phases, realize that a whole lot more was happening on the next screen.
>一旦我们有所改变,下一秒就会发生许多,翻天覆地的变化。
Here, in one second, it seems to have gone much further, so it's probably traveling faster.
在这一秒内,它似乎运动了更远的距离,所以这段时间它可能运动得更快
A joule is a kilogram meter squared per second squared.
一个焦耳等于,一千克乘以米的平方除以秒的平方。
It's something I throw up has an initial speed of 10 meters per second.
抛出物体的,初速度是10米/秒
For example, here, in one second it went from here to here.
例如,在一秒内它从这儿运动到这儿
OK, let's take 10 seconds on that.
好,让我们开始十秒倒计时。
So, why should a non-frightening incongruity cause people to make a distinctive loud noise consisted of staccato segments of one fifteenth of a second each separated by a fifth of a second?
为什么不引起恐惧的不一致性,会让人们发出一种与别不同的声音,而且这种声音是间断的,一节声音持续15分之一秒,两节声音之间也是相隔15分之一秒?
So, let's think qualitatively for a second about what that means or what the real meaning of that is. What that is telling us is that according to Newtonian mechanics and Coulomb's force law, is that the electron should actually plummet into the nucleus in 0.1 nanoseconds.
让我们定性的想想,这意味着什么,这告诉我们,根据牛顿力学,和库仑定律,电子,在0。1纳秒内,就会掉到原子核里面。
What it means is if you'd release a rock at that location one second before with a certain speed that we can calculate, it would've ended up here with precisely the position and velocity it had at the beginning of our experiment.
它的意义在于,若在该处以特定速度抛出一个物体,这个速度可通过计算得到,一秒之后,物体会运动至我们设定的起点,并且速度为我们设定的初速度
Also, what's the energy per photon of this red laser pointer, and then it's also worth trying a calculation dealing with intensity. So let's also try calculating the numbers of photons that would be emitted by this laser pointer, if, for example, we were to use it for 60 seconds and this were a one milliwatt laser.
同样,红色激光笔的,每个光子能量是多少,这也值得用处理强度的方法计算一下,让我们也计算一下,有多少光子会从这个激光笔射出,举个例子,如果我们使用它持续60秒,这里会有一毫瓦的激光。
And this is a very fast speed, of course, it's about 700 million miles per hour. So, one way to put that in perspective is to think about how long it takes for a light beam to get from earth to the moon. Does anyone have any guesses? Eight seconds, that sounds good.
当然这是一个非常快的速度,它大约是每小时7亿英里,为了更形象化,我们,看看光从地球到月球,需要多少时间,你们猜猜是多少?,8秒,猜的不错。
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