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拟鳄龟好养吗价格收藏推荐施甸县黄缘盒亚洲巨龟加拉巴哥象龟锯缘龟缅甸陆龟黄头庙龟价格怎么养英语学习笔记:antiwar adj. 反战antipathy n. 憎恨,反感antithesis n. 正好相反antibacterial adj. 抗菌的antibacterial soap 抗菌皂antibacterial agent 抗菌因子antibody n. 抗体He committed himself to the antiwar movement.他专心致力于反战运动The style of his speech was in complete antithesis to mine.他和我的讲话方式完全相反更多实用有趣节目 搜索微微信:早安英文 5957华蓥市印度星龟密西西比红耳龟黄头侧颈龟东部网目鸡龟价格怎么养 Xiaohua: Hello, and welcome to Round Table’s Word of the Week. This week we are going to talk about some science theories that are made known by the film Interstellar.John: Yeah, not so much made known. I mean these are concepts and ideas that have been around quite a long time even as early as the 1930s and 190s, but really what we see with the movie Interstellar which I have not seen yet, we see just a kind of popularization of those ideas. Not to say that Interstellar is the first one to do so, but due to the popularity, especially here in the Mainland, without it we cannot talk about some of them. I want to take the time right now to first describe some very fundamental concepts in the world of mathematics, in physics that inms much of what we saw in Interstellar. So the first is general relativity and a simple explanation of general relativity is the idea on large scales, what happens with large bodies and their influence on other things. So by large bodies, I mean planets, suns, other stars, comets, and things like that. Large massive things in space and how they affect each other, mostly looking at gravity and time.Xiaohua: 广义相对论general relativity基本上讲的就是在广大的空间内的一些高密度的天体是怎样互相之间作用而影响我们的John: Then there is quantum physics. So general relativity is attributed to Einstein in the 1930s and 190s somewhere around there. And then there was quantum physics which was popularized especially in the 1960s and 1970s. So general relativity has everything to do with large massive bodies, again planets, stars, things like that. Quantum physics has everything to do with small things. Things that we cannot perceive with the naked eye, so quantum physics tries to answer the question how is it that an atom stays in atom, how does a molecule stay a molecule, even going future down how does a proton stay a proton.Xiaohua: 在相对论之后,又有了著名的量子理论quantum physicsJohn: The problem theoretical physicists so the people who are doing all the math and trying to figure how the math works is that if you try to apply the ideas in mathematics of general relativity to very small things, everything breaks down. And if you try to apply the mathematics of quantum physics and quantum theory on a larger scale, everything breaks down. And so what theoretical physicists had to do was come up with a completely separate system of math and a completely separate idea of how things work. And they call that string theory. So string theory has not been experimentally proven. However, this point is accepted by a wide number of theoretical physicists and mathematicians as a very elegant way of bringing general relativity and quantum physics together.\Xiaohua: 由于广义相对论和量子理论在很多地方是不能同时成立的,于是理论物理学家们又延伸出一个新的学科,那就是弦理论,也就是string theoryJohn: Right, so the idea behind string theory is that you have strings of different shapes and sizes vibrating at certain frequencies. This can be very, very small, smaller than electron, than the smallest p we know of. Everything basically is made up of different types of strings vibrating at different frequencies and this is where the ideas of branes or membranes and worm holes really start to take shape and actually start to make sense in terms of the mathematics and the actual theory.Xiaohua: 弦理论的一个基本观点就是说自然界的基本单元不是点状粒子,而是很小很小的线状的弦string,而弦之间的不同震动就产生出不同的基本粒子另外在弦理论里面还有一个brane, right?John: Yeah, brane. It’s just the shortening of the word membrane. The idea there is that the membrane is actually a very elongated string that also has its own vibration. And the idea is all theory. None of this is proven. It’s that our universe in fact could be either just on one brane or could be that we are on many different branes, so the idea is that somehow you take one membrane and you fold it around. It should be theoretically possible to create some kind of gateway between those two. That’s really where the idea of a worm hole really starts to make sense, so people used to think there was this science fiction idea that black holes could somehow be a worm hole, but as far as we know, the physics of that just make no sense, because the black hole is a star that collapses upon itself so quickly because of the way that these ces work, that it just sucks in everything else around it and the thing is as far as we can tell, if everything is actually sucked into the black hole, there is no way that a human could actually survive.Xiaohua: 而弦理论的存在使得平行空间,也就是虫洞的存在产生了可能以前有人认为黑洞和虫洞也许是一种东西,但其实我们现在知道黑洞是一种超高密度的天体,那么所有的物体在被吸入黑洞之后都没有办法逃脱出来,所以黑洞和虫洞其实是不一样的John: I want to talk about the speed of light, in about relativity in that sense, because the whole thing with one of the big discoveries of Albert Einstein in terms of relativity was the speed of light. So a lot of science fiction looks at faster than light travel, sometimes abbreviated into FTL. The thing is right now, and this is why worm holes and things like that are so attractive, because according to the physics that in our understanding of the universe now it is virtually impossible to ever actually travel at the speed of light or even faster than the speed of light using what we now have in terms of propulsion technology. Because according to Emc*, as you get closer to the speed of light, the energy required increase in such an exponential fashion. 3690射洪县苏卡达象龟地龟刺山龟麝香龟欧洲陆龟日本石龟哈米顿氏龟价格怎么养

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汉中市苏卡达象龟地龟刺山龟麝香龟欧洲陆龟日本石龟哈米顿氏龟价格怎么养Around twenty years ago I was living in Seattle and going through hard times. I could not find satisfying work and I found this especially difficult as I had a lot of experience and a Master degree.大约二十年前,我住在西雅图,经历着人生中非常艰难的时光我找不到满意的工作,尤其是我经历丰富还手握一个硕士学位,这感觉尤其令人难熬To my shame I was driving a school bus to make ends meet and living with friends. I had lost my apartment. I had been through five interviews with a company and one day between bus runs they called to say I did not get the job. I went to the bus barn like a zombie of disappointment.说来惭愧,我靠着开校车这份工作来勉强维持生活,然后在朋友家蹭住我已经没有了自己的公寓我在一家公司面试了五次,然后有一天,我在出车途中被告知无法得到这份工作我走进车库时,如同一个失魂落魄的僵尸Later that afternoon, while doing my rounds through a quiet suburban neighbourhood I had an inner wave—like a primal scream—arise from deep inside me and I thought ;Why has my life become so hard?; ;Give me a sign, I asked... a physical sign—not some inner voice type of thing.;那天下午晚些时候,当我例行出车经过一个安静的郊外街区时,内心突然一阵涌动——如同一声原始的尖叫,从内心深处升腾起来,我想:“我的生活为何如此艰难?”“给我一个信号好吗?”我恳求道,“一个看得见摸的着的信号,而不是什么内在的声音启示你之类虚幻的东西”Immediately after this internal scream I pulled the bus over to drop off a little girl and as she passed she handed me an earring saying I should keep it in case somebody claimed it. The earring was stamped metal, painted black and said BE HAPPY.就在这声内心的尖叫刚过去,我停下校车,放下一个小姑娘,就在她经过我身旁时,她递给我一只耳环,说让我先保存着以防万一有人来认领这个耳环是金属片质地,黑色,上面写着:“请快乐一点”At first I got angry—yeah, yeah, I thought. Then it hit me. I had been putting all of my energies into what was wrong with my life rather than what was right! I decided then and there to make a list of 50 things I was grateful .一开始我很愤怒,是的,是的我想随后,它真正击中了我,原来我把所有的精力投诸到我的生活为什么一团糟上,而不是感恩那些顺境上当即我就决定列一个表写出让我感激的人生50件事At first it was hard, then it got easier. One day I decided to up it to 75. That night there was a phone call me at my friend house from a lady who was a manager at a large hospital. About a year earlier I had submitted a syllabus to a commy college to teach a course on stress management. (Yup, you heard me.) She asked me if I would do a one-day seminar 0 hospital workers. I said yes and got the job.一开始有些难,慢慢地就容易多了有一天我决定要扩增到75条那天晚上,在朋友家有一个电话找我,来电者是一位女士,她是一家大医院的经理大约一年前,我曾向社区大学提交了一份教授压力管理的课程提纲(呵呵,就是你听到的没错)她问我是否可以为0个医院员工做一个一天的研讨会我说没问题就接下了这个活My day with the hospital workers went very well. I got a standing ovation and many more days of work. To this day I KNOW that it was because I changed my attitude to gratitude.和医院员工相处这天过得非常顺利,我获得了他们长时间地起立鼓掌,然后我又多得到了几天的工作直到此时,我终于明白了,一切都是因为我改变了心态,心怀感激Incidentally, the day after I found the earring the girl asked me if anyone had claimed it. I told her no and she said ;I guess it was meant you then.;更巧的是,就在我拿到耳环的第二天,那个女孩儿问我是否有人认领它我告诉她没有,然后她说:“那么我想它也许就是为你准备的”I spent the next year conducting training workshops all around the Seattle area and then decided to risk everything and go back to Scotland where I had lived previously. I closed my one-man business, bought a plane ticket and got a six-month visa from immigration. One month later I met my wonderful English wife and best friend of years now. We live in a small beautiful cottage, two miles from a paved road in the highlands of Scotland.接下来第二年的时间,我都用来在西雅图各地办培训专题讨论会,然后决定孤注一掷回到以前居住过的苏格兰我结束了我的单身生意,买了一张机票,并从移民局获得了六个月的签一个月后,我就遇到了我那位理想的英国妻子,她也是我十五年的好友我们定居在一个距大路约两英里远的苏格兰高地的一个美丽的小村舍中THE ONLY ATTITUDE IS GRATITUDE has been my motto years now and yes, it completely changed my life.“感恩是唯一的心态”多年来已经成为了我的座右铭,是的,它彻头彻尾地改变了我的人生 5589 棱背泥乌龟采购信息大全养殖方法黄骅市黄缘盒亚洲巨龟加拉巴哥象龟锯缘龟缅甸陆龟黄头庙龟价格怎么养

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