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2018年04月20日 06:59:45    日报  参与评论()人

宜春韩美整形去疤多少钱樟树市人民医院极线除皱极线声波极线音波价格And just once, it recorded a signal that got everyone excited,仅一次,它记录下一组激动人心的信号the ;wow!; signal, as it became known.也就是人们所熟知的wow信号The signal was a steady source of radio waves,信号显示了一阵稳定的无线电波来源just the kind an alien race might send,正是外星人可能发送的讯息类型because it stands out from the radio static that fills the universe.因为它从宇宙浩大的信息量中脱颖而出A computer recorded the signal as six letters and numbers.电脑以六个字母和数字记录下了这组信号Astronomer Jerry Ehman saw the data天文学家杰里·艾汉看过数据后and wrote one word in the margin.在页面边缘写下一个词Ehman and others subsequently searched the same patch of sky many times艾汉和他的同事们不断地搜寻这一片天空But found nothing.但却空手而归The ;wow!; signal had vanished.wow信号消失了The whole mysterious episode reveals that making contact整个神秘事件揭示了with aliens via radio is always going to be difficult.用无线电与外星人取得联系的难度巨大In such a vast universe,在浩瀚的宇宙中messages take a long time to reach their destination.信息需要许久才能抵达目的地The ;wow; signal appeared to come from a star system 200 light years away.wow信号似乎来自一个200光年外的星系So it took at least 200 years to reach us.所以这信号历经至少200年才传到地球If we sent a reply, it would take another 200 years to reach them,我们倘若回复,将耗费又一个200年传去信号by which time they might have forgotten they sent anything时至那时,它们也许已经忘记曾发送过信号and stopped listening for a reply.并早已放弃了等候回音Worse, they might well have destroyed themselves in the meantime.更糟的话,它们也许已经与此期间自我毁灭了The human race very quickly discovered the power of the atom bomb.人类在短时间内就发现了原子弹的威力If the same holds for intelligent aliens,如果智能外星人也有类似的发现then they might not last long.他们也许活不长久Perhaps they all blow themselves up soon after也许他们在发现Emc2不久后they discover that ;E; equals ;mc; squared.就已毁灭了自己If civilizations take billions of years to evolve如果文明要历经百万年才能形成only to vanish virtually overnight,毁于一旦只是瞬间的事情then, sadly, we#39;ve next to no chance of hearing from them.很遗憾,我们几乎不可能听到来自他们的消息They are simply too far away in space and time to reach.他们的空间和时间对我们而言都太遥不可及But there is one last possibility但也有最后一种可能:that aliens who have avoided destroying themselves有效避免了自我毁灭的外星人are aly colonizing the universe.正大张旗鼓地占领宇宙 Article/201506/381141江西省韩美整形医院胸部乳房乳晕要多少费用 有比NBA更牛的职篮?对了,就是美国的大学生联赛NCAA。它的收视率、相关商品的营业额可是超出NBA的。每年三月末到四月初的决赛阶段比赛更有March Madness(疯狂三月)之称。今天我们就学一些篮球相关的英语,也带你了解美国人为什么那么爱看大学生联赛。 Article/201508/392997丰城市红十字会医院彩光脱毛仪超声波去眼袋冰点脱毛要多少费用

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宜春袁州区中人民医院口腔美容中心Time travel can be complicated,and complicating.So let#39;s ignore all the paradoxical stuffs and talk about a few simple ways that you can time travel without leaving your home.时空穿梭非常复杂。那么让我们抛弃那些矛盾的东西来谈谈几种不出家门穿梭时间的方法。First,do nothing,You are aly traveling through time.I mean,here you are,fifteen seconds into the future since the start of this .Easy,right? The point is,we are all always traveling forwards through time.But that#39;s boring time travel.What#39;s interesting is time travel relative to other people.首先,什么都不做你已经穿越时间了。我是说现在你已身处于视频开始15秒后的未来了。很简单吧?其实我们一直在时空中向前穿梭。但这种时空穿梭很无聊。有意思的是相对别人的时空穿梭。To do that,start walking,and you#39;ll travel through time relative to someone standing still.We#39;ve know for over a century that time and space are really just two components of a single space-time,and the faster you move,the slower time will pass for you.If you take a walk around the block,you#39;ll be 3 femtoseconds younger than your friend who stayed home.想要成功 走走路 相对那些站着不动的人你就是在做时空穿梭。一个世纪以来,我们都知道时间和空间都是单个时空中的两个组成元素,你动得越快对你而言时间过得就越慢。如果你绕着楼走,你会比房间中的朋友年轻3飞秒。Except,in order to walk around the block,you had to stand up.You#39;re now further from the earth,and so gravity is a tiny bit weaker for you.Which menas you are traveling through time relative to your friend who#39;s sitting down.That#39;s right,more gravity makes time slow down,too.If you stand up for a minute,your feet will age 10 femtoseconds less than your head.不过你得站起来才能在房子周围走动。现在你离地球更远对你而言引力弱了一点点。也就是说,相对于那个坐着的朋友你就已经在做时间穿梭了。的确,引力更大,时间也更慢。如果你站1分钟,你的头部会比足部小10飞秒。On the other hand,GPS satellites high in orbit experience less of earth#39;s gravity and this travel noticeably faster through time than we do.which is why their clocks are calibrated to run slow.Maybe you wanna time travel more than a few femtoseconds.Get y for your head to start spinning.I mean,the Universe.Because if the whole universe was spinning really fast,General relativity predicts there will be time loops all over the place.另外,高空轨道上的GPS卫星受到地球引力更小,穿梭的速度也就比我们更快。这也是为什么卫星时钟被调慢了。或许,你不只想穿梭这几飞秒。准备着让大脑转起来吧。我要说的,是宇宙。因为如果整个宇宙飞速旋转,广义相对论预测,空间将内处处都是时间循环。Moving along one of these loops,you#39;d always feel like you were moving forwards in time.But overall,you#39;d loop around and travel back to a time and place in your own past.It#39;s a little like how you can keep moving forwards on the earth,but earth#39;s curvature brings you back to where you started.Unfortunately,our universe isn#39;t spinning.Maybe it would be easier to build an infinite long,super dense spinning cylinder.which would also curse spacetime enough to create a Time Loop.穿梭于这些循环内时,你总会觉得自己在走向未来。而整体上,你将穿梭到自己过去一个时间和地点。这有点像是你在地球上不停地向前走,但地球的曲率把你带回了起点。不幸的是,宇宙并不在自旋。可能做一个无限长,密度无限大的转筒更简单点。这也会让时空弯曲,制造出时间循环。The problem,of course,is how do you build something that#39;s infinite in size.Maybe you could just make it really really big?Nnnnn,no.If you try to squeeze this time machine into finite space,you#39;d need negative energy,something nobody knows how to create,to make it work.Otherwise,you#39;d end up with a black hole.Wait,but what if instead of a black hole,we built a worm hole?Worms holes are hypothetical,but not physically impossible bridges through spacetime,shortcuts that can instantaneously connect to different places and time in our uneiverse.当然,问题在于如何造出无限大的物体。那造一个很大很大的呢?呐不行。如果你把这个时间机器塞到有限空间内,想要让它动起来 得用到没人能制造出的负能量才行。要么,结果就是一个黑洞。等等,如果我们造出的不是黑洞,而是虫洞呢?虫洞是假想之物,但并非物理上不可能的,穿越时空的桥梁,它是能瞬间连接宇宙内两个不同时间地点的捷径。If you had a worm hole,you might be able to use it to travel into the past or the future.Problem is,no one knows how to build a worm hole.Or once you#39;ve build it,how to keep it from collapsing.As Shawn Carol has eloquently written:Keeping worm holes open requires a form of negative energies.Nobody knows how to make negative energies,although they occasionally slap the name Exotic Matter on the concept and pretend it might exist.如果你有虫洞,兴许能用它穿梭到过去或未来。只是,问题是没人知道怎么造虫洞。造出虫洞后,又如何阻止它塌缩。正如Shawn Carol所说:让虫洞保持打开要用到一种负能量。让虫洞保持打开要用到一种负能量。没有人知道如何制造负能量,尽管人们经常就这个概念甩出“异物质”,并且假装它存在。Well,that#39;s to bad,but as a conciliation,welcome to the future.Almost 3 minutes have past since the beginning of this .And we now have personal jet packs.好吧,悲剧了,不过无论如何欢迎来到未来。自这个视频开始已过去3分钟。现在我们也造出了个人喷气包。 Article/201503/363300 ;What they have done so carefully is the impression of the veins, which would probably go against it being some form of amputation, because if a hand was amputated the veins would be empty, because obviously the blood drains out.These are very carefully crafted, and really quite beautiful.制作者非常用心地制作出血管的效果,因此这不太可能是截肢。如果手被切下来,血管一定会因失血而干瘪手上的这些细节都经过精心打造,十分精美。;I#39;m sure this is a human hand, but there are certain things that are slightly odd about it.The nails, the #39;spoon-shaped#39; nails, are really indicative of someone who potentially might have anaemia, for some reason; the fingers are really thin and spindly, and also there is this deformity of the little finger, which I think has probably been broken at some stage, at the end of it.;我敢肯定这是一只真人手的模型,不过其中有些奇怪的地方。比如指甲全部呈汤勺状凹陷,显示出它的主人曾患过贫血症。此外,手指细弱纤长,且小指略有变形,我想应该曾折断过。It#39;s small medical details like these that, after 1,700 years of oblivion, bring Wahab Ta#39;lab back to life.I find myself wondering how old he was.The veins on the back of the hand are very prominent.And, above all, wondering how he broke his little finger.Was it perhaps in battle? It doesn#39;t look as though it was in the fields-this doesn#39;t seem like the hand of a labourer.A fortune-teller of course would look at once for the lines on the palm of the hand, but the palm of this hand has been left unworked.There are lines, though, but they#39;re on the back, and they#39;re lines of text.They#39;re written in an ancient Yemeni language which is linked both to modern Hebrew and to Arabic, and the inscription tells us what this object was for, and where it was displayed:在被人遗忘了一千七百多年后,这些微小的医学细节又让瓦哈·塔拉布复活了。我发现自己在揣测他的年纪—他手背上的血管非常突出—而我最想了解的还是他的小指为何折断。是在战场上受的伤吗?我感觉不会是在田里一这不像是一个体力劳动者的手。算命师肯定首先想看看他的掌纹,但这只手的掌心一片空白。确实有些线条,不过雕在手背上,是古老的也门文字。古也门语与现代希伯来语和阿拉伯语都有关联。文字记录了铜手的制作目的及展示地点:;Son of Hisam, the Yursamite, subject of the Banu Sukhaym, has dedicated for his well-being this his right hand to their patron in his the god#39;s shrine dhu-Qabrat.;巴努·苏克因的子民,尤塞麦特族人希山姆之子献上自己的右 手给他们的保护神塔拉布·里阳,敬奉于萨法城杜卡布拉特神庙, 祈求福社。 Article/201507/386454万载县妇幼保健人民医院瑞蓝玻尿酸瑞蓝二号瑞蓝2号哪家便宜价格宜春治疗青春痘哪里好

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