㈠ 黑洞英文介紹
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.
翻譯成漢語就是下面的意思----
廣義相對論預言的一種特別緻密的暗天體。大質量恆星在其演化末期發生塌縮,其物質特別緻密,它有一個稱為「視界」的封閉邊界,黑洞中隱匿著巨大的引力場,因引力場特別強以至於包括光子(即組成光的微粒,速度c=3.0×10^8m/s)在內的任何物質只能進去而無法逃脫。形成黑洞的星核質量下限約3倍太陽質量,當然,這是最後的星核質量,而不是恆星在主序時期的質量。除了這種恆星級黑洞,也有其他來源的黑洞——所謂微型黑洞可能形成於宇宙早期,而所謂超大質量黑洞可能存在於星系中央。黑洞可以經由電子儀器觀查到。
黑洞不讓任何其邊界以內的任何事物被外界看見,這就是這種物體被稱為「黑洞」的緣故。我們無法通過光的反射來觀察它,只能通過受其影響的周圍物體來間接了解黑洞。雖然這么說,但黑洞還是有它的邊界,即「事件視界(視界)」。據猜測,黑洞是死亡恆星的演化物,是在特殊的大質量超巨星坍縮時產生的。另外,黑洞必須是一顆質量大於錢德拉塞卡極限的恆星演化到末期而形成的,質量小於錢德拉塞卡極限的恆星是無法形成黑洞的。
【希望這個可以幫助您】
㈡ 有關黑洞的英語閱讀
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詞左右的介紹黑洞或者反物質或者蟲洞的英語短文。不要太難得。初三能讀懂就行!
黑洞、反物質和蟲洞這三樣東西本來就屬於很難懂得東西,還要用英文表達的簡單點的話有點難。但可以把它寫的形象生動點:比方說黑洞是一個很黑的洞,就不要說黑洞是一個可以吸引周圍一切物體的高質量天體。
㈣ 什麼是黑洞卞毓麟閱讀答案
定義:由一個只允許外部物質和輻射進入而不允許物質和輻射從中逃離專的邊界即視界屬(event horizon)所規定的時空區域
黑洞是一種引力極強的天體,就連光也不能逃脫。當恆星的半徑小到一定程度,小於史瓦西半徑時,就連垂直表面發射的光都無法逃逸了。這時恆星就變成了黑洞。說它「黑」,是指它就像宇宙中的無底洞,任何物質一旦掉進去,「似乎」就再不能逃出。由於黑洞中的光無法逃逸,所以我們無法直接觀測到黑洞。然而,可以通過測量它對周圍天體的作用和影響來間接觀測或推測到它的存在。
㈤ 黑洞說明文閱讀答案
1.根據拼音寫出相應的漢字。
qī(
)黑塵āi(
)
2.這篇文章主要介紹了黑洞的哪些奇異特性?
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3.文章第①段中加粗的「目前」能否刪掉?為什麼?
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4.文章第③段畫線部分運用了什麼說明方法?簡要分析它的作用。
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5.宇宙中,有許多謎團等著我們去破解,中國載人宇宙飛船的試飛成功已經邁出了可喜的一步。對於未來,我想你也有許多夢想,請簡單談談。
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參考答案:
1.漆埃
2.①具有極大的吸引力;②不發出可見光;③溫度極高;④發出極強的X射線;⑤使表面光線彎曲變形3.不能刪去,因為「目前」指的是我們直到「現在」所能知道的,不包含將來出現的情況,刪去後語句表意不清,與事實不符,因此不能刪去。用上它體現了說明文語言的准確性。(意對即可)
4.運用了打比方和列數字的說明方法。形象生動、准確具體的說明了黑洞「黑」這一特點的它的體積。
5.「略」。(不設統一)
㈥ 關於黑洞的知識(英語)•
黑洞是現代廣義相對論中,宇宙空間內存在的一種天體。黑洞的引力很大,使內得視界內容的逃逸速度大於光速。
1916年,德國天文學家卡爾·史瓦西(Karl Schwarzschild)通過計算得到了愛因斯坦引力場方程的一個真空解,這個解表明,如果將大量物質集中於空間一點,其周圍會產生奇異的現象,即在質點周圍存在一個界面——「視界」一旦進入這個界面,即使光也無法逃脫。這種「不可思議的天體」被美國物理學家約翰·阿奇博爾德·惠勒(John Archibald Wheeler)命名為「黑洞」。
「黑洞是時空曲率大到光都無法從其事件視界逃脫的天體」。[1-3]
黑洞無法直接觀測,但可以藉由間接方式得知其存在與質量,並且觀測到它對其他事物的影響。藉由物體被吸入之前的因高熱而放出和γ射線的「邊緣訊息」,可以獲取黑洞存在的訊息。推測出黑洞的存在也可藉由間接觀測恆星或星際雲氣團繞行軌跡取得位置以及質量。
希望我能幫助你解疑釋惑。
㈦ 《神秘的黑洞》任務型閱讀英語
We have trousers in all colours on sale.
㈧ 關於黑洞的英語作文
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 神奇的黑洞閱讀答案
1、這篇文章主要介紹了黑洞的哪些奇異特性?
答:具有極大的吸引力;不發出可見光;溫度極高;發出極強的X射線。
2、文章第①段中加粗的「目前」能否刪掉?為什麼?
答:不能刪去,因為「目前」指的是我們直到「現在」所能知道的,不包含將來出現的情況,刪去後語句表意不清。
3、文章第③段畫線部分運用了什麼說明方法?簡要分析它的作用。
答:運用了打比方和列數字的說明方法。形象生動、准確具體地說明了黑洞「黑」這一特點的它的體積。
(9)關於黑洞的初中英語閱讀答案擴展閱讀
黑洞形成的原因:
1、當一顆恆星衰老時,核心開始坍縮,物質將不可阻擋地向著中心點進軍,直到最後形成體積接近無限小、密度幾乎無限大的星體。
2、而當它的半徑一旦收縮到一定程度,質量導致的時空扭曲就使得即使光也無法向外射出——「黑洞」就誕生了。
㈩ 神奇的黑洞中,短文中關於黑洞的正確說法是什麼
黑洞是有現代物理學家愛因斯坦與惠勒在相對論中提出的早期的的一個宇回宙的物理模型。它是由答大質量恆星和超大質量恆星燃燒與釋放完能量後,恆星內部結構發生引力塌縮,直到超新星爆炸後形成的黑洞。黑洞被分為有恆星引力塌縮而成小型質量黑洞,中型質量黑洞和如銀河系中心的大型質量黑洞。黑洞是一個引力很強的天體,連光都逃不出它那強大的引力,不過黑洞的反面是白洞,被它吸入的粒子都會趁機逃逸出去。
不過黑洞到現在都設有在宇宙中找到,不過現在的科學家通過議器探側到來自宇宙深處中來自黑洞中發出的強烈的x光射線與無線電射線信號,相信末來科學家能找到黑洞的!