单词:electron paramagnetic resonance dating
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Unit 3 Family One Modern dating 现代约会 1 Introduction A For millions of singles, e-mail has become an essential tool in the dating game. It's a good tool for casually getting to know people. It expedites the whole dating routine. 对于成百万的单身
In the square outside the British Library in London is a sculpture of Sir Isaac Newton - The first man who asked why apples seem always to fall towards the centre of the earth. Maybe they chose it for the spot because it shows a great scientist at wo
THIS IS AMERICA - Dating By Jerilyn Watson Broadcast: Monday, February 14, 2005 (MUSIC) VOICE ONE: Welcome to THIS IS AMERICA, in VOA Special English. I'm Steve Ember. VOICE TWO: And I'm Faith Lapidus
'Face Blind' People Cannot Remember Faces From VOA Learning English, this is the Health Lifestyle report. Some people are great at remembering faces. Once they meet you, they never forget how you look. They might say things like, I never forget a fac
By Melinda Smith Washington 30 March 2007 Since the mid-20th century the World Health Organization reports there has been an increase in the rate of breast cancer among women in developed countries. For decades, doctors have urged their patients to d
Looking Into Your Brain Just Became Easier Researchers and engineers keep improving the machines that help doctors better understand and diagnose conditions that affect our brains. One of the goals is to find causes of Alzheimers and Parkinsons disea
OK, great, we smell vibrations. How? All right? 好吧,我们闻到的是震动。怎么闻到呢? Now when people ask this kind of question, they neglect something, which is that physicists are really clever, unlike biologists. 当人们问这个问
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
Three Scientists Win Nobel Prize in Chemistry Three scientists have won the Nobel Prize for chemistry for their work to simplify and improve the imaging of biomolecules. 三位科学家因为在简化和改善生物分子成像方面的成就获得了诺
Searching the Internet can be a totally exhausting experience, as you bounce from one site to another to another, sometimes until you cant remember what you were looking for in the first place. But according to scientists at U.C.L.A., all that virtua
全息图或可与CT及超生扫描仪兼容 Since the 1980s, doctors have used Magnetic Resonance Imaging machines, or MRI scanners, to look into patients bodies without exposing them to the harmful effects of X-rays.An alternating magnetic field cr
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But this still doesn't explain why light is able to pass through glass rather than being absorbed as with most solids. 但是这还是不能解释为什么光可以穿透玻璃而不是像其他大多固体那样被吸收。 For that, we need to go a
Finally, in 1926, Heisenberg came up with a celebrated compromise, producing a new discipline that came to be known as quantum mechanics. At the heart of it was Heisenberg's Uncertainty Principle, which states that the electron is a particle but a pa
Neutrons and protons occupy the atom's nucleus. The nucleus of an atom is tinyonly one millionth of a billionth of the full volume of the atombut fantastically dense, since it contains virtually all the atom's mass. As Cropper has put it, if an atom
今天我们要学的词是 speed dating, speed is spelled s-p-e-e-d, dating is spelled d-a-t-i-n-g, speed dating. Speed 是快速,dating 是约会,连在一起 speed dating, 就是快速交友,闪电配对。Speed dating has become popular in
The Microscopic Technique Each advance in microscopic technique has provided scientists with new perspectives on the function of living organisms and the nature of matter itself. The invention of the visible light microscope late in the sixteenth cen