The increase appeared to be driven by a 1.8 percent spike in wholesale prices, largely due to higher energy prices.
VOA: standard.2009.07.14
So, what we would expect is that there is a relationship between intensity in kinetic energy because it was understood that however intense the light was, if you had a more intense light, it was a higher energy light beam.
光强和能量之间,应该有一定的关系,因为在我们的理解中,不管光强是多少,光的强度越大,光束能量越高。
Specifically, we have to take in this exact amount of energy in order to bump the electron up to higher energy level.
特别的,我们严格需要,这么多,来把电子,提升到更高的能级。
"During these difficult economic times, higher energy prices pose a great hardship on families struggling to make ends meet.
VOA: standard.2009.06.13
And this one here, because it is at a higher energy is called antibonding molecular orbital.
这里的这个,因为处在一个较高的能级,被叫做反键分子轨道能级。
Utilities are allowed pass on their higher energy acquisition costs to consumers.
VOA: standard.2010.03.23
That is, you've got lower energy on the right and also higher entropy.
这表明,你降低了能量,同时增加了熵。
Unfortunately the Democratic majority in Congress is embracing a national energy tax that will lead to even higher energy prices and massive job losses for the American people,".
VOA: standard.2009.06.13
But we see if we have a free electron, as we do in this dotted line here, that's going to be a higher energy that's less stable.
但是我们看到如果,我们有一个自由电子,就像虚线所示那样,那将会是一个较高的,不够稳定的能量。
And the truth is that yes, this costs energy, we're going up to a higher energy state.
事实上,它需要消耗能量,我们到了一个更高的能量状态。
And we are going to use the Pauli Exclusion Principle and we are going to use the fact that we fill from lower energy to higher energy.
我们将会用到泡利不相容定律,而且我们准备利用这个事实,那就是我们从低能级到高能级填充。
So, if you use a black lamp or something and you excite something up to a higher energy level and then it relaxes back down to its lower energy state, it's going to emit a new wavelength of light, which is going to be visible to you.
如果你用一个紫外灯或别的,东西把某种分子激发到,更高的能级,然后它会掉回,到低能级,它就会释放,一个新的波长的光,这个光是可见的。
And what we predict as an energy difference between two levels, we know should correspond to the energy of light that's either emitted, if we're giving off a photon, or that's absorbed if we're going to take on a photon and jump from a lower to a higher energy level.
我们预测,两个能级之间的能量差,我们知道,它要么和发出的光有关,如果它发出光子的话,要么它吸收光子,从低能级跃迁到,更高能级上去。
It's a higher energy situation.
这个情形能量更高。
So anything that goes from a higher energy level to 2 is going to be falling within the Balmer series, which is in the visible range of the spectrum.
任何更高能级到2能级2,都是属于Balmer系,它在可见光谱中。
Well, we can't guarantee with UV light we'll have enough energy to eject every single electron, so that's why when we use x-rays, they're higher energy, you can pretty much be guaranteed we're going to eject all of those electrons there.
好,我们不能保证紫外光有足够的能量,激发出每一个电子,所以我们要使用,X,射线,它的能量更高,你可以非常确定,我们可以激发出其中所有的电子。
What we're proposing here is that you take a nice low energy s electron and move it into a higher energy p orbital.
我们这里说的是,你把一个低能s电子,移到高能p轨道里去。
So this is our final equation, and this is actually called the Balmer series, which was named after Balmer, and this tells us the frequency of any of the lights where we start with an electron in some higher energy level and we drop down to an n final that's equal to 2.
把2代入到这里,所以得到1除以,这就是我们最终的方程,这叫做Balmer系,以Balmer名字命名的,它告诉我们从高能级掉到n等于2的,最终能级所发出光的频率。
So you know that x-rays are higher frequency than UV light, for example, that means it's also higher energy than UV light, and if you think back to our photoelectric effect experiments, do you remember what type of light we were usually using for those? Does anyone remember?
你们知道,X,射线的频率比紫外光高,这意味着,它的能量也比紫外光要高,那么,请大家回想一下我们的光电效应实验,大家还记得当时我们用的是什么光源吗?,有人记得吗?
And instead of having the electron giving off energy as a photon, instead now the electron is going to take in energy from light and move up to that higher level.
与电子以光子形式施放能量不同,我们现在要从光中,获得能量到一个更高的能级。
If we have a higher z effective, it's pulled in tighter, we have to put in more energy in order to eject an electron, so it turns out that that's why case 2 is actually the lowest energy that we need to put in.
而如果有效核电量更高,原子核的束缚也就更紧,我们不得不输入更多的能量来打出一个电子,这就是第二种情况,所需要输入的,能量更少的原因。
But when we think about where anti-bonding orbitals should be, it should be higher in energy.
但当我们讨论反键轨道的时候,它的能量应该更高。
Place the non-bonding pairs on peripheral atoms first, which the higher average valence electron energy.
首先将孤对电子放在外围的原子,那儿具有较高的平均价电子能。
You have one electron at a higher energy.
一个电子在较高的能级。
We can think about the Lyman series, which is 1 where n equals 1. We know that that's going to be a higher energy difference, so that means that we're going to be in the UV range.
我们可以来看看Lyman系,也就是n等于,我们知道它的能量差更大,所以它在紫外光区内。
And as you go to higher and higher levels, those energy levels, as you saw in the case of hydrogen, are more closely spaced.
当能级变得越来越高,那些高能级的轨道,就会变得越来越接近,正像你在氢原子里看到的那样。
What we do care about is the energy of our orbitals that have electrons in them, and if we combined all four of the orbitals, then our hybrid orbitals would have more p character to them, so they'd actually be higher in energy.
是不是很高,我们不关心它的能量很高,我们关心的是,有电子的轨道的能量,如果我们把四个轨道结合。
It's going to be higher in energy than the individual atomic orbitals.
它比独立的,原子轨道要高。
Anti-bonding is even higher in energy than non-bonding.
反键能量比非成键更高。
Absorption is just the opposite of emission, so instead of starting at a high energy level and dropping down, when we absorb light we start low and we absorb energy to bring ourselves up to an n final that's higher.
吸收就是发射的逆过程,与从一个高能量到低能量不同,当吸收光时,我们从低能量开始,吸收能量到一个更高的能量。
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