原标题: 泉州第一整形医院四维彩超预约ask晚报
栏目简介:;Shanghai Live; focuses on big events in the city and major issues around the world, and presents them in a practical and audience-friendly manner to meet the ever-evolving needs of Shanghai#39;s English-speaking viewers,both local and expatriate.《直播上海英语电台》集中报道城市大事件以及全球热点话题,并以观众喜闻乐见的方式呈现给大家,从而满足上海本地以及上海海外人士的英语需求。 Article/201612/481055Hi, I#39;m Jessica 嗨,我是Jessicaand today I#39;m gonna talk about a reaction I like to call今天我要讲的化学演示叫作;Midas#39; magic; ;迈达斯的魔术;and before I get started, let#39;s watch the reaction in action在开始之前,我们先来看看实际反应with the help of Dr. Bassam Shakhashiri 演示由Bassam Shakhashiri士来做and here he is 这就是他了he#39;s actually the president of the American Chemical Society他是美国化学学会主席and his motto is science is fun他的格言是,科学很有趣Here he is at MIT and let#39;s see what he has to show us他来到MIT,看他是怎么做的Watch this. I take this clear and colorless liquid看这个,这是一种无色透明液体and I put some of it into beaker, about 100 milliliters将一些倒入烧杯,大约100毫升How do I know it#39;s about 100 milliliters?我怎么知道大约是100毫升I#39;m ing the markers here on the beaker 我阅读了烧杯上的刻度and I take about 100 milliliters of a bit different clear and colorless liquid 再倒100毫升的另一种无色透明液体but you don#39;t know it#39;s different, they look the same但你们不知道它不同,因为看起来是一样的and look at this look, look what#39;s gonna happen now? 看这个,看看会发生什么Isn#39;t one of the most fascinating observations you make?这非常迷人,不是吗You take 2 clear colorless liquid, you mix them together将两种无色透明液体混合and you get a yellow substance that is insoluble in water 却得到了一种不溶于水的黄色物质This is lead iodide这是碘化铅I mixed potassium iodide solution with lead nitrate solution我混合了碘化钾溶液和硝酸铅溶液So the magician never tells you how the trick works 魔术师不会告诉你们为什么会这样but in science we like to know what#39;s going on 但科学中,我们会解释发生了什么So what is going on? Let#39;s break it down发生了什么呢,我来讲解一下Dr. Shakhashiri started with two clear colorless liquidsShakhashiri士使用了两种无色透明液体He had about 100 milliliters of lead nitrate 他用了大约100毫升的硝酸铅and that aqueous, it#39;s in solution 这是溶于溶液的and about 100 milliliters of potassium iodide还有大约100毫升的碘化钾also aqueous 也是溶液状态and when he mixed those together将两者混合he got a yellow precipitate 他得到了黄色沉淀Let#39;s color that in yellow我用黄色来表示A precipitate is a solid沉淀物是一种固体So how do we know what this yellow solid is?我们怎么知道这种黄色固体是什么呢Well, this is a reaction that#39;s called a double displacement reaction这种反应被叫作复分解反应And in this kind of reaction这种反应中the cation and anion pairs switch places阳离子和阴离子相互交换So what exactly does that mean? 什么意思呢I#39;m gonna use some colors to help me out我将用些色来描述So we#39;ve got cations and anions in each of these compounds 这两种化合物中都有阳离子和阴离子The cations have positive charge, so阳离子具有正电荷in this case it#39;s led which has a 2+ charge 这里铅离子具有2+电荷and nitrate, N03-然后是硝酸根离子 NOYou need 2 of those to have a neutral compound 这需要两个,才能得到中性化合物Our other compound over here has potassium这里另一种化合物拥有钾离子which has a +1 电荷是+1an our anion is iodide 而阴离子是碘离子which is -1 电荷是-1 Article/201412/351131

So what#39;s happening?这里发生了什么呢Well, the flame heats up the elements giving them more thermal energy火焰加热这些单质,让它们具有更多热能This excites the electrons from their ground or lower energy state这会将电子从较低能量的基态激发到to an excited or higher energy state较高能量的激发态This is what that looks like大致是这样Since energy cannot be created or destroyed由于能量无法创生或毁灭and energy that was absorbed by the atom原子所吸收的能量must be emitted again as the electron returns to the ground state必然会在电子返回基态时释放出来This energy is emitted as light这些能量会以光的形式释放So why do different elements have different colored flames?为什么不同单质燃烧产生了不同颜色的火焰呢Because the difference in energy between the ground state and the excited state 这是因为基态和激发态之间的能差is unique for each element对于每种元素是不同的And what does energy have to do with it?能量同这有什么关系呢Well, the human eye perceives photons or light particles人眼会将不同能量的光子of different energies as different colors分辨为不同的颜色So red light is a lower energy than yellow红光比黄光能量要低which is a lower energy than blue黄光又比蓝光能量低Think about it like a rainbow spectrum可以用虹光谱来考虑So energy increases along the spectrum沿光谱往前,能量会递增Red is low energy light 红光是低能量的光and violet is high energy light而紫光是高能量的光Going back to our atoms#39; energy levels回到这些原子的能级if the difference between the ground state and the excited state is smaller如果基态和激发态之间的能差较小the light particle is of lower energy光子的能量就会较低and we see that as a redder light这时看到的光会偏红Conversely相反if the energy gap is larger如果能差较大the light particle is of higher energy光子能量就会较高and we see that as bluer light我们看到的光就会偏蓝And this is a simplified picture of what#39;s happening这只是一幅简图Each element has a unique set of excited states which每种元素都有独特的激发态each leads to a different pattern of light导致不同的光的样式which we see as red, green, yellow, etc导致我们这里看到了红色,绿色,黄色,等等Hope you enjoyed the and I#39;ll see you next time但愿大家喜欢这个视频,下次再见 Article/201501/355969

栏目简介:;Shanghai Live; focuses on big events in the city and major issues around the world, and presents them in a practical and audience-friendly manner to meet the ever-evolving needs of Shanghai#39;s English-speaking viewers,both local and expatriate.《直播上海英语电台》集中报道城市大事件以及全球热点话题,并以观众喜闻乐见的方式呈现给大家,从而满足上海本地以及上海海外人士的英语需求。 Article/201505/377505Vsauce I#39;m Jake and being able to go from one point in 3 dimensional space to another is an incredibly cool concept and a major mechanic in the game Portal where you use wormholes as a means of physically connecting two different locations,but unfortunately that it isn#39;t yet possible.这里是Vsauce频道,我是Jake,从3维空间的一个点穿越到另一个点,这是系列游戏《传送门》的主要玩法,也很酷,传送门是一种连接两处现实世界的捷径,但是很可惜,这种技术目前还不可能实现。A wormhole is a hypothetical shortcut through spacetime and one that requires negative energy to create,however we would first have to figure out how to create negative energy...which is also hypothetical.But that shouldn#39;t stop us from thinking with Portals,so let#39;s start with what a Portal is.虫洞是人们假想的一种能够穿越时空的捷径,要创造虫洞需要反能量,但是我们首先要搞懂如何才能创造反能量...而反能量也只是一种假想。但是这不应该阻止我们去思考传送门,我们先来看看什么是传送门。A Portal is defined as an entrance or doorway.They are gateways into different places,into new experiences and new worlds.When you were a kid on the playground if someone said the ground was lava,the ground was lava.You had entered the Magic Circle.Extra Credits has a great all about it but imagine you#39;re on a soccer field,in a classroom or in a court,in those places different rules apply than in normal life and we accept them.按照定义,传送门可以看做入口或者门是去住不同地方、融入新体验、进入新世界的通路,小时候在操场上玩耍,如果有人说地面是岩浆,我们真的会以为,此时的你已经踏进了魔法阵中,关于这个理念,Extra Credits出过一个阐述得很好的视频。想象一下,如果你现在身处足球绿茵场、或是教室、法庭,在这些地方,我们遵守着与日常生活不同的规则。The same goes for books,movies and games.While playing Metal Gear Solid there was a moment when a character died that actually made me tear up.It was the first time I had cared that deeply about a character in a game-a mesh of polygons.And that got me thinking about how we connect to fictional characters.In Frank Rose great book,The Art of Immersion he mentions an experiment by former game designer-Demis Hassabis in which he took patients suffering from a disease that affects memory and had them imagine laying on a beach.书籍、电影和游戏也是如此,我在玩《合金装备》时,曾经为某个角色的死亡落泪。这是我第一次深深地为一个游戏中的角色担忧——其实就是——这让我思考我们与虚拟人物的关系。在《The Art of Immersion》一书中,作者Frank Rose提到了前游戏设计师Demis Hassabis做过的一项实验,在实验中他让疾病导致受损的病人想象自己正躺在沙滩上。One of the subjects could see the color blue,hear birds,the sound of the ocean and some ship horns.That was as much as he could imagine.A control subject,someone with the full capability of their memory was asked the same thing and they described the sun,the sand,the heat,the color,of the sea,and saw palm trees running along the beach.其中一名病人说自己看到了蓝色、听到了鸟叫、海浪声和船只的这名病人所能想象的就是这些景象。在对照组中,也就是记忆完全没有受损的人,他们对同样问题的回答中描述了太阳、海沙、炽热的感觉、大海的颜色还有沿着海岸栽种的棕榈树。What Hassabis discovered was that our memories are what help us form our imagination,they#39;re what allow us to integrate naturally with imaged settings.His over all goal was to form a model of human brain function enabling game designers to make characters with emotions,memories and thoughts.To create an intelligent artificial intelligence.It is the reason why a game like The Sims was so revolutionary.It felt like the characters,the sims,had virtual free will.Hassabis 发现记忆可以帮助我们进行想象,正是有了记忆,我们才能自然而然地与影像进行互动。他的目的是构建出一个具有人脑功能的模型可以让游戏设计都设计出带有情感、记忆和思想的角色。制作出一个能理解人的人工智能。这也是为什么《模拟人生》这类游戏能够带来如此巨大变革的原因。我们好像觉得《模拟人生》里面的角色真的有自由意志一样。We#39;d place them in a world that we helped shape but we never knew the exact outcome.The game would act as a portal into an alternate version of our own reality -one that we felt we have more control of,When you enter a virtual world,an important aspect that keeps you engaged is the illusiion of choice,that decisions you make will affect the outcome of the game.even though the reality it#39;s aly been pre-programmed,even it has multiple endings.他们生活在我们搭建的世界,但是我们永远不知道确切结局。游戏的作用就像通往另一个现实世界的传送门——一个我们认为能够操控的世界,当你踏入虚拟世界,让你能够一直投入其中的重要因素,就是“你能做出选择”这个假象,玩家做出的选择会影响游戏的结局,但是现实是,游戏的结局再多都是预定程序。The Stanley Parble does a great job of making the illusion of choice a center piece in the game and then mocking it.Stanley took the first open door and then he left,Stanley was so bad in following the directions,it#39;s incredible he wasn#39;t fired years ago.One of the reasons multiplay games like Counter-Strike and World of Warcraft are still so active is because the characters you are playing against are people,completely unpredictable people.游戏《史丹利的寓言》很成功地将选择假象作为游戏的核心内容。游戏旁白:史丹利来到第一扇打开的门前,又离开了,史丹利如此不从命令,几年前就该被开除了,《反恐精英》和《魔兽世界》这种多玩家游戏至今依然如此盛行,是因为和你对抗的是真人玩家,是完全无法预测的人类玩家。There has always been that instinctive urge,that desire to live inside the fictional worlds of the books we#39;ve ,movies we#39;ve watched or the virtual ones of games we#39;ve played.And faster than ever before,technology is getting us there.he Oculus Rift allows us to explore the boiler room from Spirited Away,be teleported to the bustling streets of Tokyo or maneuver your way through City 17 in Half Life 2-all without leaving your home.我们天生就渴望生活在书本、电影和游戏的虚拟世界中,今天的技术正以前所未有的速度实现我们的梦想。有了Oculus Rift,我们可以探寻《千与千寻》中的锅炉房,也可以传送到熙熙攘攘的东京街头,还能漫步《半条命2》中的一切无需离开你家就能实现。Even when we#39;re being passive and watching content on television,the experience is becoming more immersive.Samsung was the first to create curved ultra high definition televisions,displaying images 4 times that of HD.The first time I watched a movie on one it felt like looking through a window.And right now you are starting at the biggest portal imaginable...the Internet.就连看电视这种被动体验也变得更有浸入感。三星是第一个推出曲面高清电视的厂家,这种电视的分辨率可以,我第一次在观看这台电视播放的电影还以为自己看的是一扇窗户。此时此刻,你也在盯着我们能够想象的最大的一扇传送门....互联网。You can start on the wikipedia page for Jelly Doughnut and,4 link clicks later,end up on the Meaning of Life.You can go on reddit and explore fictional worlds other people have made in the World Building sub reddit.You can go to college,watch pretty much any movie, any book and if there is a story you wish existed there is probably a fanfiction of it or at least an epic rap battle.你可以先从维基上观看果冻甜甜圈的页面,经过四次链接跳转后,你就来到了“生命的意义”这个页面。在Reddit-World Building子版块中,你可以探索由其它网友构建出的众多虚拟世界。你可以在互联网上读大学、看电影、读书....这里有同人小说或者一场Rap大战。And with this incredible portal that we have now,we are spending more and more time in virtual reality.We interact virtually,we shop virtually,we live virtually...at least part of us does and we also consume a lot more information than ever before.There are people that say that we spend too much time playing games or on computers,but there were also people in the 19th century who had the same fears about ing too many novels.如今这些神奇的传送门让我们耗在虚拟现实上的时间越来越多。我们的互动、购物、生活方式都已经虚拟化....至少我们之中的一部分人是如此,我们消耗的信息也比从前大得多。有人说现在的人们花在游戏或者计算机上的时间过多,但是想想19世纪,那时候人们还对看太多小说表示过担忧呢?In America in the 1940s people would gather and burn comic books.Even in 1605 the character Don Quixote;filled his imagination to bursting with everything he in books that it became the literal truth;which led to him thinking he was a knight and jousting windmills.So what is the next progression for immersion?It may be Brain Computer Interfacing.Jan Scheuerman is a quadriplegic who had electrodes injected into the parts of her brain that activated when she thought of moving her arm and shoulder.20世纪40年代的美国,人们曾经将漫画书集中焚毁,甚至早在1605年,文学作品中的堂.吉诃德就“将所有书中讲到的东西想象成现实”他以为自己是一名骑士,还和风车进行决斗。那么下一步浸入会怎么发展呢?可能就是脑机接口,四肢瘫痪的Jan Scheuerman在脑内植入了电极只要她想到移动胳膊或肩膀,电极就会被激活。Those signals were sent directly to a robotic arm,allowing her to control it.Once we can tap directly into our minds and have our sensory inputs feeding into a computer you could visit Mars without needing a spaceship.When you#39;d open your eyes,you#39;d be seeing the Red Planet.When you wanted to walk,you#39;d just think it and your character#39;s legs move.这些信号被直接传入机械手臂,这样她能可以进行控制了。一旦我们能够将思想和感觉输入信号直接输入电脑,你就可以在不借助太空飞船的前提下参观火星。只要你睁开双眼,就可以看见这颗红色行星上的景象。想走路的话,就在脑子里想一下,你操控的角色的腿就会动。The same goes for exploring virtual worlds.And as we spend more time in these worlds,they start to bleed into our own.If I asked you right now to write a paper from memory about the history,of Batman and a paper on the history of Einstein which do you think would be longer? Which would have more detail?If I were to tell you that Batman#39;s name was Jim Wayne,his parent#39;s died in a car accident and his bat cave was in a Taco Bell ,you would tell me I#39;m wrong.在虚拟世界浏览也是这个道理。我们花越来越多时间在虚拟世界的同时,虚拟世界也在渐渐渗入。现在我让你马上凭记忆各写一篇蝙蝠侠记和爱因斯坦记,你觉得哪篇文章会长一些?哪篇文章的细节更多?如果我说蝙蝠侠叫吉姆.维恩,父母在一次车祸中丧生,他的蝙蝠洞在一家Taco Bell快餐店里,你能分辨出其实我说错了。Because these are things you know about Batman,things that are truths.Just like I#39;d be wrong if I told you that Einstein had long black hair and had lived in an RV.If we can argue about a fictional character#39;s history or traits,does that make them,in a sense,real?I#39;ve surprisingly,never met Abraham Lincoln but I can about him in books,see him portrayed in movies.因为关于蝙蝠侠的这些信息你是知道的,因为这些是事实。就像我告诉你爱因斯坦有一头乌黑的长发,住在露营车里一样。如果我们可以争论虚拟角色的历史或物质,这能说明这些虚拟角色?我从来没见过林肯,但是我读过关于他的书,在电影中见过别人。I#39;ve also never met Luke Skywalker but he is in movies and in books as well.In fact the Star Wars wiki for him has 42,000 more words than the wikipedia entry for Abraham Lincoln.But we know that Abraham Lincoln existed...so then I#39;d say how do we know that Luke Skywalker never existed? Sure nobody has met Skywalker but there is nobody alive that has met Lincoln.同样的,我也没见过卢克.天行者,但是他也在电影和书籍出现。实际上维基百科上《星球大战》页面要比亚伯拉罕.林肯的页面42,000英文单词。而我们知道,亚伯拉罕林肯是真实存在的...所以我要说....我们如何知道卢克.天行者从未存在过?当然,没人遇见过天行者,也没有任何活着的人遇见林肯。All we have of them are stories.And on that point... how do you know that I exist?What you#39;re watching right now is a bunch of code that is being interpreted by a machine to display an image.If some of the code gets deleted,I become corrupted.Sure you can follow me on twitter and instagram,but you can also follow Betty Draper,a character from Mad Men on twitter.Have you ever met me?Have you seen me in real life with your own eyes?我们知道的只有他们的故事,所以...你怎么确定我是真实存在的?你现在看到的不过是一大堆由机器解读后显示成图像的代码群,只要删除其中一些代码,我的图像就会崩。你可以在Twitter和instagram上关注我,但是你也能关注《广告狂人》中的虚拟角色Betty Draper,你见过我么?你在现实生活中亲眼见过我么?You fill in who I am by waht you know of me,by what you see of me and by your own experiences and memories to create a full picture.You have gone through a portal and entered my world and in this world we have a magic circle that you accept as true.But it isn#39;t until we pull back that you actually get the full picture that this whole time I have just been a recording on a television screen.And as always,thanks for watching.你只是通过你了解到的、看到的、亲自体会到的关于我的信息和记忆来构建我这个人,此时你已经穿越某道传送门,进入了我的世界在这个世界你以为是真实的东西,只是我的魔法阵。直到我拉伸镜头你才能看到完整的真相,刚刚你看到的不过是电视屏幕上播放的录像。还是那句老话,谢谢观看。 Article/201504/367541

12星座英语怎么说?歪果仁也像我们一样爱黑某些星座吗? 嗯哼,Virgo, I#39;m talking about you. Article/201508/394899一位研究玩耍的先锋,说到,幽默,游戏,调情和幻想不仅仅是有趣。孩提时代的玩耍让成年人更加高兴和聪明 -- 保持这种状态可以让我们永远与聪明相伴。 Article/201508/393277

英语非常道 第15期:新GRE,你应该了解的;前规则;GRE高分学员分享高分秘籍,新航道GRE名师讲解新GRE变化与趋势。新GRE更难了吗?新GRE单词更好背了吗?新GRE都会考什么?看名师指路,听过来人传授经验。这些GRE考前规则,你应该了解! Article/201509/389121TED演讲视频:女企业家是榜样而绝非特例女性的力量可不小,那为什么她们只能获得小额贷款?在TEDxWomen系列中,记者盖尔·切麦赫·列蒙提出,女性经营着各类公司--从个体生意到大型工厂--但她们在经济发展中的关键地位却被忽视了。 Article/201702/492684The rebel warlords hand over their children as hostages.叛军首领将孩子作为人质交给法老Taken back to Egypt,法老把孩子带回埃及If the Pharaoh#39;s new subjects ever rebel again,如果他们还敢对法老的新政有异议They will be killed.孩子就要被杀掉Tutmoses iii expands the Egyptian empire图特斯三世将埃及帝国的领土To its greatest size ever 扩大到前所未有的辽阔400,000 square miles.四十万平方英里He claims: I have extended the dominion of Egypt他宣称 我已经把埃及的领土扩张到as far as the circuit of the sun.#39;如同太阳一般大From a species struggling to survive,人类最初为生存而斗争Mankind has unlocked the keys to controlling our destiny:现在已经解开掌握命运的关键Fire, farming,那就是火的使用 耕种Communication,交流Building cities, pioneering trade建造城市 开拓贸易And the art of war.战争之艺术One man can now control the lives of millions.一君在上乃统千军万马Man with the power of a god.君如同神一般存在But the era of the god-like king is coming to an end.但神王的世纪即将逝去A new material dug from the earth#39;s crust人们从地壳中挖出一种新材料Will transform our future.它将改变我们的未来New technologies,新技术New people.新人类And new ideas.新理念The age of iron.一切尽在铁器时代 Article/201509/397044

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