美国科学60秒 SSS 2015-01-06
时间：2018-12-24 作者：英语课 分类：2015年Scientific American(一)月
Sometimes it is hard to see the light, especially it lies in the invisible spectrum 1, like ultrared, ultraviolet radiation. But if you long to see the unseeable, you might interested to hear that under certain conditions people can catch a glimpse of usually invisible infrared 2 light. That's according to study of proceeding 3 of national academy of science. Our eye sensitive to elementary particles called photons that have sufficient energy to excite light sensitive receptive protein in our redness. The photon in infrared radiation in the other hand has less ?. We can detect those lower energy photon using sometimes called light vision camera or J, but naked eye is usually blind to infrared radiation. But recently researchers at laser lab notice that they sometimes solve flash of light while working on the device made of brief infrared poses. So they feel the test to recognin cells erupted with their laser. When the light poses rapidly enough that the receptors can get hit with two photons at the same time, which supply enough to excite the receptor. That double dose make the infrared visible. One application of the finding is that it could give doctor new tail to diagnose of disease of retina. So you could id trouble before my otherwise be seen.
- This is a kind of atomic spectrum.这是一种原子光谱。
- We have known much of the constitution of the solar spectrum.关于太阳光谱的构成，我们已了解不少。
- Infrared is widely used in industry and medical science.红外线广泛应用于工业和医学科学。
- Infrared radiation has wavelengths longer than those of visible light.红外辐射的波长比可见光的波长长。
- This train is now proceeding from Paris to London.这次列车从巴黎开往伦敦。
- The work is proceeding briskly.工作很有生气地进展着。