光的吸收是指原子在光照下,会吸收光子的能量由低能态跃迁到高能态的现象。从实验上研究光的吸收,通常用一束平行光照射在物质上,测量光强随穿透距离衰减的规律。
系统由单片机控制,最终把对红外光的吸收转化为油的浓度。
The system is controlled by singlechip and turned the absorption of the infrared into the oil concentration finally.
利用耦合场诱导的量子相干,极大地减小了介质对探测光的吸收。
The absorption against probe laser field can be largely suppressed via quantum interference by coupling laser fields.
传统CT由于利用人体组织对X光的吸收进行成像具有很大的局限性。
Traditional CT has a great limitation because its image is produced based on the X-ray absorbed by human tissue.
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。
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。
So that's the important take-away message from this slide. If we think about these different types of lights, microwave light, if it's absorbed by a molecule, is a sufficient amount of frequency and energy to get those molecules to rotate. That, of course, generates heat, so that's how your microwaves work.
重要的信息,如果我们看看,这些不同种类的光,微波,如果被分子吸收,它的频率和能量可以,使分子转动,这当然的,会产生热量,这就是你们微波炉的工作原理。
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