科学研究   

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You’ve likely heard a lot about 5G lately. But what is it, exactly? 5G is the latest standard for mobile internet networks. Mobile telephone services have technically been around since the 1940...

你最近可能听说过很多关于5G的事情。但它到底是什么？5G是移动互联网网络的最新标准。从技术上讲，移动电话服务自20世纪40年代以来就已经存在了。但这些系统需要拨打80磅的话务员。汽车电话。而且网络一次只能处理几个电话，因为联邦通信委员会不允...

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Steve: And carbon monoxide in particular, just a follow-up on that. You have to be alive to be poisoned by it, because you have to be breathing, because the carbon monoxide takes the place of the oxyg...

史蒂夫：特别是一氧化碳，我只是想跟进一下。你必须活着才能被它毒害，因为你必须呼吸，因为一氧化碳取代了氧气，它与血红素和血红蛋白结合。布鲁姆：没错。史蒂夫：比氧气更紧。布鲁姆：所以，你得到的不是氧合血红蛋白，它是血液中氧气的载体系统，而是碳氧...

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[SAWYERS:] What do I mean by a conformational change mutation? What I mean is if you recall back to the first video, BCR-ABL is a machine. It's moving back and forth between this inactiv...

[SAWYERS:]我所说的构象变化突变是什么意思？我的意思是，如果你还记得回到第一个视频，BCR-ABL是一台机器。它正在往回走在两者之间来回这种非活动和活动的形状。这些突变是什么就是强迫蛋白质转化为活性构象。你还记得我做的当格列卫结合时...

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Steve: Many people may not read the acknowledgments. So in your book, they're called the gratitudes. Blum: Yes. Steve: But I read them, and I just want to know, is your husband any more relaxed arou...

史蒂夫：很多人可能不会读致谢信。所以在你的书中，它们被称为感恩。布鲁姆：是的。史蒂夫：但我读过，我只是想知道，自从你那本关于毒药的书出版后，你丈夫在你身边会不会更放松？布鲁姆：不完全是，但他确实告诉我，当他们找到他的尸体时，他们都会知道是谁...

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If you had to choose right now, how long would you want to live? 80 years? 90? 120? Longer? And do you think you'll change your mind once you reach that age? Fifty thousand years ago mo...

如果你现在必须做出选择，你想活多久？80年？90?120?比较长的？你认为一旦你到了那个年龄，你会改变主意吗？5万年前，大多数人很早就去世了。当我们学会如何利用周围的资源来对待自己时，情况变得越来越好。如今，人类比以往任何时候都活得更长、更...

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Steve: So the rock is either rotating exceptionally slowly as it makes its way in a linear motion or it's rotating very quickly as its going down the linear motion. Shegelski: Yeah, yes that's right....

史蒂夫：所以岩石要么在直线运动中旋转得异常缓慢，要么在直线移动中旋转得非常快。谢格尔斯基：是的，没错。对我们来说，关键的一点是不仅要看冰壶比赛中的投篮，还要看其他你绝对看不到的投篮。例如，当我们在岩石上方的吊杆上安装一台摄像机来拍摄运动时，...

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Steve: You are not a full-time curling physicist. What do you do with most of your time? Shegelski: Well, most of the time I'm teaching; roughly 30 percent of the time or 40 percent of my time goes t...

史蒂夫：你不是一个全职的冰壶物理学家。你大部分时间都在做什么？Shegelski：嗯，大部分时间我都在教书；大约30%的时间或40%的时间用于研究，我的研究目前是在量子力学隧穿和衰变领域。史蒂夫：人们可能没有听说过量子隧穿和衰变。你能简要解...

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What do sushi, some salad dressings, ice cream and candies have in common? They contain algae, or, more familiarly, certain kinds of algae that you know as seaweeds. Long a background ingredient...

寿司、沙拉酱、冰淇淋和糖果有什么共同点？它们含有藻类，或者更常见的是，某些种类的藻类，你称之为海藻。藻类作为一种长期的背景成分，作为烹饪节目的明星，越来越多地出现在盘子里。它们口感多样，易于种植。它们可能会帮助我们面对不确定的食品未来。藻类...