单词：quantum cascade laser
单词：quantum cascade laser 相关文章
By Carol Pearson Washington 30 April 2008 Ten years ago, the U.S. Food and Drug Administration approved LASIK, eye surgery with a laser that enables people to see without glasses. But about five percent of LASIK procedures fail, and those patients ca
VOA常速英语2008年（四月）
EXPLORATIONS - The History of the Laser Welcome to EXPLORATIONS in VOA Special English. Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one of the best examples of how technology can
2013年VOA慢速英语(二)月
This is Scientific American's 60-Second Science. I'm Sophie Bushwick. Got a minute? The shortest distance between two points may be a straight line, but try telling that to electrons: when current flows down a wire, these particles zig and zag, movin
Scientific American(九)月
Welcome to the Science Talk, the weekly podcast of Scientific American posted on February 18th, 2010. I am Steve Mirsky. And you know what the hottest sport in the world is right now? Thanks to the Winter Olympics, it is, of course, curling. That's t
Scientific American(二)月
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单词解析速记
The United States Navy has demonstrated a new laser weapon operating in the Persian Gulf. The Laser Weapons System, or LaWS, is deployed on the USS Ponce transport ship. A live test firing of the weapon was recently carried out for Cable News Network
2017年VOA慢速英语(七)月
5 Reasons to Try Firefox Quantum Browser Mozilla has released a new update of its Firefox browser that it says is much faster and provides a better overall user experience. But can the new version called Firefox Quantum compete with the worlds curren
2017年VOA慢速英语(十一)月
A very loud bang,I was sitting right on the side where the engine is, ah,the loud bang with a little bit flare for a short time and the engine was shut up pretty much immediately from the flight deck. Ah,on flight I analysed the situation.Ah,thanks t
CNN2010年(十一)月
This is All Things Considered. I'm Michelle Norris. Phone calls from Sweden woke up two American scientists this morning, John Hall and Roy Glauber. They will share the Nobel Prize for Physics with a German Researcher Theodor Haensch. All three worke
2005年NPR美国国家公共电台
The History of the Laser Welcome to EXPLORATIONS in VOA Special English. Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one of the best examples of how technology can go from the sci
2013年VOA慢速英语(五)月
EXPLORATIONS - The Laser: Futuristic Science Found at Your Local Store MARIO RITTER: Welcome to EXPLORATIONS in VOA Special English.Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one
2012年VOA慢速英语(一)月
The United States is warning Honduras that there will be a cascade of negative consequences for the Central American state if the coup that ousted elected President Manuel Zelaya on Sunday is not reversed. The Obama administration is backing mediati
VOA标准英语2009年(七月)
And this, then, led to my big questions. And they're the same ones that I have today. 这让我想到一个大问题。一些我今日仍然在想的问题。 And they are: why do things happen, and how do things happen? 为什么事情会发生，它们
TED演讲设计篇
Quantum communication boasts ultra-high security as a quantum photon can neither be separated nor duplicated. It is hence impossible to wiretap, intercept or crack the information transmitted through it. Anton Zeilinger, an Austrian physicist at the
2016CRI中国国际广播电台
Books and Arts; Quantum physics 文艺；量子物理学 House of dreams；Scientists race to explain why the Higgs boson matters 想象的殿堂；科学家竞相解释为什么希格斯玻色子至关重要 Higgs Force: The Symmetry-Breaking Force
经济学人文艺系列
Books and Arts; Book Review; Fundamental physics; Big bang; 文艺；书评；基础物理学；宇宙大爆炸； Popular physics has enjoyed a new-found regard. Now comes a brave attempt to inject mathematics into an otherwise fashionable subject 科
经济学人文艺系列
Remarkably, and despite his findings, when the twentieth century dawned Michelson counted himself among those who believed that the work of science was nearly at an end, with only a few turrets and pinnacles to be added, a few roof bosses to be carve
万物简史
By Paul Sisco Washington 14 November 2007 At the McDonald Observatory in western Texas, a unique space program has been quietly underway for more than 30 years. It is called the Lunar Laser Ranging Program. VOA's Paul Sisco has more. Research scienti
VOA常速英语2007年（十一月）
Remarkably, the phenomenon was proved in 1997 when physicists at the University of Geneva sent photons seven miles in opposite directions and demonstrated that interfering with one provoked an instantaneous response in the other. 令人惊叹的是，这
万物简史
Science and technology 科学技术 Cryptography 密码术 The solace of quantum 量子之慰 Eavesdropping on secret communications is about to get harder 现在想窃听秘密联系会越来越难 CRYPTOGRAPHY is an arms race between Alice and Bob,
经济学人科技系列