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发表于: 2019-8-8 15:15 | 显示全部楼层

"\u003Cdiv\u003E\u003Cp\u003ETIL the Three Gorges Dam in China is so massive it has slowed the rotation of the Earth\u003C\u002Fp\u003E\u003Cp\u003E 中国的三峡大坝太大了,把地球的旋转都拖慢了\u003C\u002Fp\u003E\u003Cdiv class=\"pgc-img\"\u003E\u003Cimg src=\"http:\u002F\u002Fp3.pstatp.com\u002Flarge\u002Fdfic-imagehandler\u002F6ef1add0-a266-44ae-8311-89e07a7fc407\" img_width=\"1200\" img_height=\"799\" alt=\"美国reddit网友:地球转速下降的“始作俑者”——中国三峡大坝\" inline=\"0\"\u003E\u003Cp class=\"pgc-img-caption\"\u003E\u003C\u002Fp\u003E\u003C\u002Fdiv\u003E\u003Cp\u003E 美国社交网站reddit读者讨论\u003C\u002Fp\u003E\u003Cp\u003E MajorNoodles\u003C\u002Fp\u003E\u003Cp\u003E Tl:DR it's not the size of the dam itself that slowed the rotation of the Earth, it's the sheer volume of water mass that has shifted because of the dam.\u003C\u002Fp\u003E\u003Cp\u003E 不是大坝本身的体积拖慢了地球旋转,而是大坝造成的垂直的水的体积。\u003C\u002Fp\u003E\u003Cp\u003E 812many\u003C\u002Fp\u003E\u003Cp\u003E Just like how an ice skater will slow their rotation by moving their arms away from their body, by lifting an amount of water away from the axis of spin of the planet it will slow the planets spin by that much. At least, that's what I'm guessing is the reason.\u003C\u002Fp\u003E\u003Cp\u003E 就像滑冰的人通过伸展手臂来减慢自己的转动速度,将一定量的水推离地球的旋转轴可以相应降低地球的转速。至少这是我猜测的原因。\u003C\u002Fp\u003E\u003Cp\u003E pulse14\u003C\u002Fp\u003E\u003Cp\u003E Moment of inertia\u003C\u002Fp\u003E\u003Cp\u003E 转动惯量。\u003C\u002Fp\u003E\u003Cp\u003E BIOHAZARDB10\u003C\u002Fp\u003E\u003Cp\u003E I understand perfectly now. Thank you\u003C\u002Fp\u003E\u003Cp\u003E 完全理解了,谢谢你。\u003C\u002Fp\u003E\u003Cp\u003E devilslaughters\u003C\u002Fp\u003E\u003Cp\u003E Gotta thank skaters, how else will we phrase complex physics and be understood easily?\u003C\u002Fp\u003E\u003Cp\u003E 我们应该感谢溜冰的人,要不然我们怎么能把复杂的物理表达的容易理解?\u003C\u002Fp\u003E\u003Cp\u003E ARN_01D\u003C\u002Fp\u003E\u003Cp\u003E Even standing up out of bed in the morning slows down the rotation of the earth. The rpms may be indistinguishable from zero, but it does slow down\u003C\u002Fp\u003E\u003Cp\u003E 甚至早上从床上站起来都能减慢地球的自传。虽然减慢的速度接近于零,但确实是减慢了。\u003C\u002Fp\u003E\u003Cp\u003E Zappke\u003C\u002Fp\u003E\u003Cp\u003E So when I lay on my back, my morning wood...\u003C\u002Fp\u003E\u003Cp\u003E 所以当我躺在床上,我的早上就会……\u003C\u002Fp\u003E\u003Cp\u003E MissFix8ed\u003C\u002Fp\u003E\u003Cp\u003E It's not you pushing off the ground that makes you jump, it's the earth pushing you away. (I ? physics)\u003C\u002Fp\u003E\u003Cp\u003E 让你跳起来的并不是你把地面推开,而是地球把你推开。(我爱物理。)\u003C\u002Fp\u003E\u003Cp\u003E pizzabyAlfredo\u003C\u002Fp\u003E\u003Cp\u003E I was going to say, the materials the dam has been constructed with are already on earth...but pooling massive amounts of water would do the trick.\u003C\u002Fp\u003E\u003Cp\u003E Edit: since users want to blast me for this...I was basing this off of a ballast effect. I know the water was already there. Having a large amount of water pooled to one side of the earth could be enough to slightly shift the center of gravity making the rotation just that much slower.\u003C\u002Fp\u003E\u003Cp\u003E 我要说的是,建造大坝的物质已经在地球上……但集中大量的水能够产生效果。\u003C\u002Fp\u003E\u003Cp\u003E 编辑:因为有人想因为这句话炸了我,我把这种情况归结为一种压载效应。我知道水也在那里。但是把水集种到地球的一边足够轻微的改变其重心,让地球转动速度变慢。\u003C\u002Fp\u003E\u003Cp\u003E CoopertheFluffy\u003C\u002Fp\u003E\u003Cp\u003E So was the water though. It's all about the placement.\u003C\u002Fp\u003E\u003Cp\u003E 水也是这样。只不过是位置问题。\u003C\u002Fp\u003E\u003Cp\u003E gwopy\u003C\u002Fp\u003E\u003Cp\u003E Elevation was the word you wanted...more specific than placement.\u003C\u002Fp\u003E\u003Cp\u003E 你想说的应该是海拔,这个词更合适。\u003C\u002Fp\u003E\u003Cp\u003E greendestinyster\u003C\u002Fp\u003E\u003Cp\u003E Even more specific... conservation of angular momentum!\u003C\u002Fp\u003E\u003Cp\u003E 更合适的是角动量守恒!\u003C\u002Fp\u003E\u003Cp\u003E Utis_Khan\u003C\u002Fp\u003E\u003Cp\u003E wow this is exactly what is going on.\u003C\u002Fp\u003E\u003Cp\u003E 就是这么个道理。\u003C\u002Fp\u003E\u003Cp\u003E Erares\u003C\u002Fp\u003E\u003Cp\u003E So in theory... If one could shift massive amounts of water up in elevation and in turn affecting how storms work and potentially using them as a weapon?\u003C\u002Fp\u003E\u003Cp\u003E 所以理论上,如果有人能把大量的水抬高到一定海拔,转而影响风暴的形成,有潜力当做武器使用?\u003C\u002Fp\u003E\u003Cp\u003E wbotis\u003C\u002Fp\u003E\u003Cp\u003E Can’t you explain just about anything by reducing it to “conservation laws?”\u003C\u002Fp\u003E\u003Cp\u003E 难道不能把它解释成守恒定律?\u003C\u002Fp\u003E\u003Cp\u003E greendestinyster\u003C\u002Fp\u003E\u003Cp\u003E Tide goes in, tide goes out. You can't explain that!\u003C\u002Fp\u003E\u003Cp\u003E 潮来潮去。你不能那么解释!\u003C\u002Fp\u003E\u003Cp\u003E Athildur\u003C\u002Fp\u003E\u003Cp\u003E That's just Poseidon and his shenanigans, trying to keep the ancient Greeks guessing.\u003C\u002Fp\u003E\u003Cp\u003E 只不过是波塞冬为了让古希腊人胡思乱想而搞的恶作剧。\u003C\u002Fp\u003E\u003Cp\u003E NimChimspky\u003C\u002Fp\u003E\u003Cp\u003E That quote is so amazing.\u003C\u002Fp\u003E\u003Cp\u003E I might watch it again.\u003C\u002Fp\u003E\u003Cp\u003E 引用的那句话很赞。我想再看一遍。\u003C\u002Fp\u003E\u003Cp\u003E wbotis\u003C\u002Fp\u003E\u003Cp\u003E Fuck it! We’ll do it live!\u003C\u002Fp\u003E\u003Cp\u003E 其他的!我们要现场直播!\u003C\u002Fp\u003E\u003Cp\u003E RMCPhoto\u003C\u002Fp\u003E\u003Cp\u003E To the top plz\u003C\u002Fp\u003E\u003Cp\u003E 顶上首页。\u003C\u002Fp\u003E\u003Cp\u003E Jericho85\u003C\u002Fp\u003E\u003Cp\u003E I've heard about this numerous times, never understood why until this comment thread.\u003C\u002Fp\u003E\u003Cp\u003E 这件事我听了好多次了,从来没搞懂,直到这个看到这个讨论串。\u003C\u002Fp\u003E\u003Cp\u003E rising3d\u003C\u002Fp\u003E\u003Cp\u003E Even more specific... gravity\u003C\u002Fp\u003E\u003Cp\u003E 更合适的是重力。\u003C\u002Fp\u003E\u003Cp\u003E toasters_are_great\u003C\u002Fp\u003E\u003Cp\u003E Elevation, yes, but far and away the most important consideration is latitude. If this were at the Arctic Circle, say, then the reservoir water (that ultimately is transferred from the world ocean) would wind up closer to the Earth's rotation axis than it was before for a smaller moment of inertia. The Earth would spin slightly faster than before and the day shorten. Exact breakeven latitude depends on the distribution of the world ocean and the integral of the square of the cosine of the latitude of its parts.\u003C\u002Fp\u003E\u003Cp\u003E 海拔,是的,但最重要的考虑因素是纬度。如果三峡大坝建在北极圈,那么水库里的水(最终从世界各大洋转移而来)将比转动惯量较小之前更加靠近地球的自转轴。地球将会比之前转的快一点,一天的时间会变短。精确的盈亏平衡纬度取决于世界海洋的分布和其纬度纬度余弦的平方积分。\u003C\u002Fp\u003E\u003Cp\u003E gwopy\u003C\u002Fp\u003E\u003Cp\u003E I'll just catch your mic for you there, sir. Wouldn't want it to get damaged.\u003C\u002Fp\u003E\u003Cp\u003E 我会在那里帮你接住麦克风的,老大。不想把它摔坏。\u003C\u002Fp\u003E\u003Cp\u003E bandanagirl95\u003C\u002Fp\u003E\u003Cp\u003E As a sound designer, I thank you for not letting the dropped mic hit the floor.\u003C\u002Fp\u003E\u003Cp\u003E Edit: fixed autocorrect\u003C\u002Fp\u003E\u003Cp\u003E 作为一个音响设计师,我谢谢你没让那个麦克风掉到地上。\u003C\u002Fp\u003E\u003Cp\u003E JCMcFancypants\u003C\u002Fp\u003E\u003Cp\u003E Could you accurately say that you've slowed the rotation of the earth by increasing the elevation of any mass...just by an insignificantly minute amount?\u003C\u002Fp\u003E\u003Cp\u003E 你难道不能准确的说你通过增加任何物质的海拔来降低地球的自转速度?只不过减小的量微不足道。\u003C\u002Fp\u003E\u003Cp\u003E Theurv\u003C\u002Fp\u003E\u003Cp\u003E That's why time goes so fast when you sleep. When you get up in the morning the world slows back down\u003C\u002Fp\u003E\u003Cp\u003E 这就是为什么你睡觉的时候时间过得这么快。当你早上醒来世界的速度又降回去了。\u003C\u002Fp\u003E\u003Cp\u003E Heslay_Cashlion\u003C\u002Fp\u003E\u003Cp\u003E I hope...... the rise of my morning wood would make the world spin slower.\u003C\u002Fp\u003E\u003Cp\u003E Someone please confirm or lie to me so I can show my wife!\u003C\u002Fp\u003E\u003Cp\u003E完整文章请看:\u003C\u002Fp\u003E\u003Cp\u003E兔梦网:http:\u002F\u002Fwww.tumeng123.com\u002F\u003C\u002Fp\u003E\u003Cp\u003E看更多评论翻译:兔梦网\u003C\u002Fp\u003E\u003Cp\u003E兔梦网-老外看中国,中国看世界\u003C\u002Fp\u003E\u003C\u002Fdiv\u003E"'.slice(6, -6),      groupId: '6722672535147643405
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