㈠ 黑洞英文介绍
General relativity predicts a particularly dense dark objects. Evolution of massive stars in their late collapse occurs, the dense material in particular, it has one called "event horizon" of the closed border, a black hole hidden in a huge gravitational field, e to the gravitational field so strong, including in particular photon (ie the composition of light particles, the speed c = 3.0 × 10 ^ 8m / s), including any material can only be entered could not escape. The formation of a black hole minimum mass star's core is about three times the solar mass, of course, this is the last star of nuclear quality, rather than main sequence stars in the period of quality. In addition to this stellar-class black hole, there are other sources of black holes - the so-called micro-black holes may be formed in the early universe, the so-called supermassive black holes may exist in the central galaxy. A black hole can be found through the concept of electronic equipment.
The black hole within its borders to prevent any outsiders to see anything, which is the object known as the "black hole" of the reason. We were unable to observe the reflection of light it can only be affected indirectly understand the objects around the black hole. Having said that, but the black hole still has its borders, namely "event horizon (horizon)." It is assumed that the evolution of stellar black hole of death matter, is in a special super-massive stars collapse generated. In addition, the quality of a black hole must be larger than the Chandrasekhar limit of stellar evolution to the end of the form, quality, smaller than the Chandrasekhar limit of the star is unable to form a black hole.
翻译成汉语就是下面的意思----
广义相对论预言的一种特别致密的暗天体。大质量恒星在其演化末期发生塌缩,其物质特别致密,它有一个称为“视界”的封闭边界,黑洞中隐匿着巨大的引力场,因引力场特别强以至于包括光子(即组成光的微粒,速度c=3.0×10^8m/s)在内的任何物质只能进去而无法逃脱。形成黑洞的星核质量下限约3倍太阳质量,当然,这是最后的星核质量,而不是恒星在主序时期的质量。除了这种恒星级黑洞,也有其他来源的黑洞——所谓微型黑洞可能形成于宇宙早期,而所谓超大质量黑洞可能存在于星系中央。黑洞可以经由电子仪器观查到。
黑洞不让任何其边界以内的任何事物被外界看见,这就是这种物体被称为“黑洞”的缘故。我们无法通过光的反射来观察它,只能通过受其影响的周围物体来间接了解黑洞。虽然这么说,但黑洞还是有它的边界,即“事件视界(视界)”。据猜测,黑洞是死亡恒星的演化物,是在特殊的大质量超巨星坍缩时产生的。另外,黑洞必须是一颗质量大于钱德拉塞卡极限的恒星演化到末期而形成的,质量小于钱德拉塞卡极限的恒星是无法形成黑洞的。
【希望这个可以帮助您】
㈡ 有关黑洞的英语阅读
General relativity predicts a particularly dense dark objects. Evolution of massive stars in their late collapse occurs, the dense material in particular, it has one called "event horizon" of the closed border, a black hole hidden in a huge gravitational field, e to the gravitational field so strong, including in particular photon (ie the composition of light particles, the speed c = 3.0 × 10 ^ 8m / s), including any material can only be entered could not escape. The formation of a black hole minimum mass star's core is about three times the solar mass, of course, this is the last star of nuclear quality, rather than main sequence stars in the period of quality. In addition to this stellar-class black hole, there are other sources of black holes - the so-called micro-black holes may be formed in the early universe, the so-called supermassive black holes may exist in the central galaxy.
㈢ 求100词左右的介绍黑洞或者反物质或者虫洞的英语短文。不要太难得。初三能读懂就行!
黑洞、反物质和虫洞这三样东西本来就属于很难懂得东西,还要用英文表达的简单点的话有点难。但可以把它写的形象生动点:比方说黑洞是一个很黑的洞,就不要说黑洞是一个可以吸引周围一切物体的高质量天体。
㈣ 什么是黑洞卞毓麟阅读答案
定义:由一个只允许外部物质和辐射进入而不允许物质和辐射从中逃离专的边界即视界属(event horizon)所规定的时空区域
黑洞是一种引力极强的天体,就连光也不能逃脱。当恒星的半径小到一定程度,小于史瓦西半径时,就连垂直表面发射的光都无法逃逸了。这时恒星就变成了黑洞。说它“黑”,是指它就像宇宙中的无底洞,任何物质一旦掉进去,“似乎”就再不能逃出。由于黑洞中的光无法逃逸,所以我们无法直接观测到黑洞。然而,可以通过测量它对周围天体的作用和影响来间接观测或推测到它的存在。
㈤ 黑洞说明文阅读答案
1.根据拼音写出相应的汉字。
qī(
)黑尘āi(
)
2.这篇文章主要介绍了黑洞的哪些奇异特性?
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3.文章第①段中加粗的“目前”能否删掉?为什么?
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4.文章第③段画线部分运用了什么说明方法?简要分析它的作用。
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5.宇宙中,有许多谜团等着我们去破解,中国载人宇宙飞船的试飞成功已经迈出了可喜的一步。对于未来,我想你也有许多梦想,请简单谈谈。
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参考答案:
1.漆埃
2.①具有极大的吸引力;②不发出可见光;③温度极高;④发出极强的X射线;⑤使表面光线弯曲变形3.不能删去,因为“目前”指的是我们直到“现在”所能知道的,不包含将来出现的情况,删去后语句表意不清,与事实不符,因此不能删去。用上它体现了说明文语言的准确性。(意对即可)
4.运用了打比方和列数字的说明方法。形象生动、准确具体的说明了黑洞“黑”这一特点的它的体积。
5.“略”。(不设统一)
㈥ 关于黑洞的知识(英语)•
黑洞是现代广义相对论中,宇宙空间内存在的一种天体。黑洞的引力很大,使内得视界内容的逃逸速度大于光速。
1916年,德国天文学家卡尔·史瓦西(Karl Schwarzschild)通过计算得到了爱因斯坦引力场方程的一个真空解,这个解表明,如果将大量物质集中于空间一点,其周围会产生奇异的现象,即在质点周围存在一个界面——“视界”一旦进入这个界面,即使光也无法逃脱。这种“不可思议的天体”被美国物理学家约翰·阿奇博尔德·惠勒(John Archibald Wheeler)命名为“黑洞”。
“黑洞是时空曲率大到光都无法从其事件视界逃脱的天体”。[1-3]
黑洞无法直接观测,但可以借由间接方式得知其存在与质量,并且观测到它对其他事物的影响。借由物体被吸入之前的因高热而放出和γ射线的“边缘讯息”,可以获取黑洞存在的讯息。推测出黑洞的存在也可借由间接观测恒星或星际云气团绕行轨迹取得位置以及质量。
希望我能帮助你解疑释惑。
㈦ 《神秘的黑洞》任务型阅读英语
We have trousers in all colours on sale.
㈧ 关于黑洞的英语作文
General theory of relativity prediction one kind of specially compact dark heavenly body. The big quality star occurs in its evolved last stage collapses shrinks, its material is specially compact, it has is called “ arc of visibility” the seal boundary, in the black hole is going into hiding the huge gravitational field, because the gravitational field is specially strong including photon any material can only go, but inescapable.Forms the black hole the star nuclear mass lower limit the approximately 3 time of solar qualities, certainly, this is the final star nuclear mass, but is not the star in the main foreword time quality. Except this kind of star level black hole, also has the other origin black hole - - so-called miniature black hole possibly to form in the universe early time, but the so-called ultra big quality black hole possibly exists in the galaxy central committee.
The black hole does not let, no matter what how in boundary any thing by outside seeing, this is this kind of object is called “the black hole” the reason. We are unable the transmitted light reflection to observe it, can only through receive its influence the periphery object to come the indirect understanding black hole. Although such said that but the black hole has its boundary, namely " event arc of visibility (arc of visibility) “. According to the guess, the black hole is the death star surplus, is when special big quality super-giant collapsing contracts proces. Moreover, the black hole must be a quality is bigger than Qiandela the Saika limit to form the stellar evolution to the last stage, the quality is smaller than Qiandela the Saika limit star is unable to form the black hole
㈨ 神奇的黑洞阅读答案
1、这篇文章主要介绍了黑洞的哪些奇异特性?
答:具有极大的吸引力;不发出可见光;温度极高;发出极强的X射线。
2、文章第①段中加粗的“目前”能否删掉?为什么?
答:不能删去,因为“目前”指的是我们直到“现在”所能知道的,不包含将来出现的情况,删去后语句表意不清。
3、文章第③段画线部分运用了什么说明方法?简要分析它的作用。
答:运用了打比方和列数字的说明方法。形象生动、准确具体地说明了黑洞“黑”这一特点的它的体积。
(9)关于黑洞的初中英语阅读答案扩展阅读
黑洞形成的原因:
1、当一颗恒星衰老时,核心开始坍缩,物质将不可阻挡地向着中心点进军,直到最后形成体积接近无限小、密度几乎无限大的星体。
2、而当它的半径一旦收缩到一定程度,质量导致的时空扭曲就使得即使光也无法向外射出——“黑洞”就诞生了。
㈩ 神奇的黑洞中,短文中关于黑洞的正确说法是什么
黑洞是有现代物理学家爱因斯坦与惠勒在相对论中提出的早期的的一个宇回宙的物理模型。它是由答大质量恒星和超大质量恒星燃烧与释放完能量后,恒星内部结构发生引力塌缩,直到超新星爆炸后形成的黑洞。黑洞被分为有恒星引力塌缩而成小型质量黑洞,中型质量黑洞和如银河系中心的大型质量黑洞。黑洞是一个引力很强的天体,连光都逃不出它那强大的引力,不过黑洞的反面是白洞,被它吸入的粒子都会趁机逃逸出去。
不过黑洞到现在都设有在宇宙中找到,不过现在的科学家通过议器探侧到来自宇宙深处中来自黑洞中发出的强烈的x光射线与无线电射线信号,相信末来科学家能找到黑洞的!