标签：背后的科学 相关文章
Now, coumarin is a very common thing, a material, in fragrance which is derived from a bean that comes from South America. 香豆素是香水中一个十分平常的原料，从来自南美的豆子中提炼出来的。 And it is the classic syntheti
TED演讲教育篇
OK? Now, we're dealing with people who only want results, and this is the commercial world. 今天，我们在和只在乎结果的人们打交道，这是一个商业的世界。 And they tell us that even if we do it by astrology, they're happy, OK
TED演讲教育篇
Now, while the smell wafts over you, let me tell you the history of an idea. 现在，趁着香味还萦绕在你们周围，我来为你们介绍一个想法形成的过程。 Everything that you're smelling in here is made up of atoms that come fro
TED演讲教育篇
This smells of cut grass. Now, this is the skeleton of the molecule. 它闻起来就像割下来青草。这就是分子的骨架。 If you dress it up with atoms, hydrogen atoms -- that's what it looks like when you have it on your computer -- but a
TED演讲教育篇
Here's how shape works in normal receptors. 这里展示的是形状是如何对通常的感受器起作用的。 You have a molecule coming in, it gets into the protein, which is schematic here, 一个分子进来，进到蛋白质里，图中所示意
TED演讲教育篇
And...but...but...we have to go a little beyond that. 我们需要进一步深入。 Now let me explain why vibrational theory has some sort of interest in it. 现在我来解释为什么震动理论有一定的道理。 These molecules, as you saw i
TED演讲教育篇
So I went searching when I started in this game to convince myself that there was any degree of plausibility to this whole crazy story. 在这个游戏的最初，我就开始寻找说服我自己，这个理论有一定的合理性，这整个故事有
TED演讲教育篇
However, I managed to get a hold of a Borane eventually, and here is the beast. 无论如何，我最终得到了一些硼烷，这就是那个怪物。 And it really does have the same -- if you calculate, if you measure the vibrational frequencies,
TED演讲教育篇
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
TED演讲教育篇
And every single part of this mechanism is actually plausible in biology. 实际上，这个机制的每一个步骤在生物领域中都是可行的。 In other words, I've taken off-the-shelf components, and I've made a spectroscope. 换句话讲，我
TED演讲教育篇
The fragrance that you will smell, you will never be able to smell this way again. 一会你们将闻到一款香水，它会带给你们绝无仅有的体验。 It's a fragrance called Beyond Paradise, which you can find in any store in the nation. 这
TED演讲教育篇
[00:03.62]How Poor We Really Are我们是多么贫穷 [00:07.58]One day a wealthy family man took his son on a trip to the country [00:12.00]so he could have his son see how poor country people were. [00:16.54]They stayed one day and one night in the farmho
智慧背囊超越自我
[00:03.47]The Marbles大理石 [00:06.22]Once upon a time, there was a foolish boy who had a bag full of beautiful marbles. [00:12.02]Now this boy was quite proud of his marbles. [00:15.81]In fact, he thought so much of them [00:18.25]that he would neit
智慧背囊超越自我
美国加州梅林镇的海岸有一种名叫泰德斯茺（Tidestrom）的豆科植物，正在垂死挣扎。它们的生存正在受到一种外来植物的威胁，名叫欧洲滩头草。 At Point Reyes National Seashore in Marin County, Califor
60秒科学
令人神魂颠倒的香水蕴含着什么样的科学？生物物理学家卢卡都灵用精准和充满魅力的语言，为大家解释气味的分子组成及其背后的艺术。
TED公开课:美丽＋潮流 表面之下
It was last night, right here in World News, we told you about the super moon, well, tonight if you're lucky enough to have a clear sky, you have a quite show. But we want to know the science behind, Why it seem bigger, and brighter we've seen years.
万花筒2012年
Science Behind Penalty Kicks Claims Almost 100% Success 点球背后的科学带来几乎百罚百中策略 Deadlocked football matches often end in penalty kicks, most recently in Sundays World Cup match between Costa Rica and Greece. With penalty k
VOA标准英语2014年(七月)
报纸头版那些关于气候变化的触目惊心的标题背后隐藏着什么？在4分钟的演讲里，大气化学家Rachel Pike为我们揭开新闻背后科学家们所做的巨大努力。作为众多参与气候研究的小组之一，她的
TED公开课:环境 重造计划
台湾籍旅美老师今天交给我们的句子是： As you start to lose weight you start to get smaller and you burn less energy and you start to metabolically adapt to your new diet. And so you are never going to lose weight at one constant rate
留美老师带你每日说英文