2023考研英語(yǔ)閱讀基礎(chǔ)物理學(xué)
Fundamental physics
基礎(chǔ)物理學(xué)
Antimatter of fact
反物質(zhì)現(xiàn)狀
Researchers at CERN have held on to anti-atoms fora full quarter of an hour
歐洲核子研究中心的研究人員已經(jīng)讓反原子停留了十五分鐘。
READERS who were paying attention in their maths classes may recall that quadraticequations often have two solutions, one positive and one negative.
關(guān)注數(shù)字課的讀者們或許會(huì)想到二次方程通常會(huì)有兩個(gè)解，一個(gè)是正值，一個(gè)是負(fù)值。
So when, in 1928, a British physicist called Paul Dirac solved such an equation relating to theelectron, the fact that one answer described the opposite of that particle might have beenbrushed aside as a curiosity.
因此在1928年，一個(gè)名叫保羅狄拉克的英國(guó)物理學(xué)家給出了有關(guān)電子的一個(gè)方程的解，然而事實(shí)上，這個(gè)結(jié)果表達(dá)的是一種相反的粒子，這個(gè)結(jié)果或許會(huì)被考慮后舍棄。
But it wasn t.
然而事實(shí)并非如此。
Instead, Dirac interpreted it as antimatterand, four years later, it turned up in a realexperiment.
相反，狄拉克將其解釋為反物質(zhì)并且在四年后，在現(xiàn)實(shí)的實(shí)驗(yàn)中驗(yàn)證了它的存在。
Since then antimatterfirst, anti-electrons, known as positrons, and then antiversions of allother particles of matterhas become a staple of both real science and the fictional sort.
從那時(shí)起，反物質(zhì)最初是反電子，也就是俗稱的質(zhì)子，接著就是其他粒子的反物質(zhì)這已經(jīng)成了現(xiàn)實(shí)科學(xué)和虛構(gòu)類別之間的主要組成部分。
What has not been available for study until recently, however, is entire anti-atoms.
這樣的研究一直以來(lái)沒(méi)有突破直到最近的完全的反原子的出現(xiàn)。
A handful have been made in various laboratories, and even held on to for a few seconds.
在各個(gè)實(shí)驗(yàn)室已經(jīng)有一小部分的反原子被發(fā)現(xiàn)，即便它們僅僅存在了幾秒鐘的時(shí)間。
But none has hung around long enough to be examined in detail because, famously,antimatter and matter annihilate each other on contact.
不過(guò)沒(méi)有一個(gè)停留了足夠長(zhǎng)的時(shí)間用以仔細(xì)地研究他們，眾所周知，反物質(zhì)與物質(zhì)只要相遇就會(huì)湮滅。
But that has now changed, with the preservation of several hundred such atoms for severalminutes by Jeffrey Hangst and his colleagues at CERN, the main European particle-physicslaboratory near Geneva.
然而隨著在歐洲核子研究中心這個(gè)在日內(nèi)瓦附近主要的歐洲粒子物理實(shí)驗(yàn)室里，該機(jī)構(gòu)的杰弗瑞?漢斯特與其同事讓數(shù)百個(gè)這樣的原子維護(hù)了幾分鐘，原來(lái)的情況現(xiàn)在已有所改觀。
The reason this is important is that Dirac s equation is misleading.
狄拉克方程是一種誤導(dǎo)這個(gè)原因是很重要的一點(diǎn)。
Antimatter cannot be the perfect opposite of matter, otherwise neither would exist at all.
反物質(zhì)并不是完全的反物質(zhì)，否則它將無(wú)法存在。
If they truly were perfect opposites, equal amounts of the two would have been made in theBig Bang,
如果實(shí)際上它們是完全相反的，那么相同的數(shù)量的反物質(zhì)早在大爆炸產(chǎn)生時(shí)就已經(jīng)互相湮滅了，
and they would have annihilated each other long since, leaving only light and other forms ofelectromagnetic radiation to fill the universe.
它們只以電磁波的形式留在宇宙中。
That galaxies, stars and planetsand physicists to ponder such thingsexist thereforemeans there is a subtle asymmetry between matter and antimatter, and that naturesomehow favours the former.
星系，恒星以及行星物理學(xué)家在在仔細(xì)思考這樣的事情它們都已經(jīng)存在了，這意味著在物質(zhì)與反物質(zhì)之間有著一些不可思議的不對(duì)稱性，自然界在某種程度上是偏愛(ài)于前者。
Two such asymmetries have indeed been found. But neither is big enough to explain why somuch matter has survived. Being able to look at entire anti-atoms might give some furtherclue.
兩個(gè)這樣的不對(duì)稱性實(shí)際上已經(jīng)被發(fā)現(xiàn)了。不過(guò)二者都不足以解釋為什么如此多的物質(zhì)存活了下來(lái)。對(duì)于整個(gè)反原子的研究或許能夠提供進(jìn)一步的線索。
Last November the ALPHA collaboration at CERN, which Dr Hangst leads, managed to putpositrons into orbit around 38 antiprotonsthus creating anti-hydrogen atomsand thenheld on to them in a magnetic trap for a few tenths of a second.
去年11月，歐洲核子研究中心由漢斯特博士領(lǐng)導(dǎo)的阿爾法項(xiàng)目成功地將正電子放入了38個(gè)反質(zhì)子周圍的軌道中因此形成了反氫原子接著將它們放入了一個(gè)磁阱，持續(xù)了零點(diǎn)幾秒。
Now, as they report in Nature Physics, the researchers have used their device to preserveanti-hydrogen for 16 minutes .
隨著他們?cè)凇蹲匀晃锢韺W(xué)》發(fā)布報(bào)告，研究人員又利用他們的設(shè)備維持了反氫原子16分鐘。
This gives the anti-atoms plenty of time to settle into their ground state, the most stablecondition a particle or atom can attain.
這讓反原子有充足的時(shí)間待在基態(tài)這是一個(gè)粒子或原子能夠達(dá)到的最穩(wěn)定狀態(tài)。
As a result, Dr Hangst and his colleagues can look in a leisurely manner for novel ways thatantimatter might differ from the common-or-garden variety.
因此漢斯特博士和他同事憑這種新奇的方式有充足的時(shí)間來(lái)觀察反物質(zhì)這或許不同于平日的各種狀態(tài)。
Their first experiment will involve nudging the trapped anti-atoms with microwaves.
他們的第一次實(shí)驗(yàn)將會(huì)用不同頻率微波輕推被困的反原子。
If the frequency of these microwaves is just right, they will flip an anti-atom s spin.
如果這些微波的頻率恰到好處，他們將會(huì)使這些反原子產(chǎn)生自旋翻轉(zhuǎn)。
That reverses the polarity of the atom s magnetic field and ejects it from the trap.
這就會(huì)改變?cè)釉瓉?lái)的極性和磁場(chǎng)，原子就會(huì)從磁阱中彈出去。
The frequency needed to do this can then be compared with that which flips the spin of anordinary hydrogen atom.
這些測(cè)試的頻率將會(huì)與翻轉(zhuǎn)普通氫原子的頻率作對(duì)比。
If the two turn out to be different, it will point towards the nature of the mysterious cosmicasymmetry.
如果兩個(gè)頻率是不同的，那么它將會(huì)指向神秘的宇宙不對(duì)稱性。
Besides being of huge interest, such a result would also have a pleasing symmetry of itsown.
除了巨大的興趣外，這樣的結(jié)果對(duì)于本身也將是一個(gè)值得欣喜的對(duì)稱。
The original discovery of antimatter was a nice example of theory predicting anundiscovered fact. This would be a fact that repaid the compliment by predicting anundiscovered theory.
反物質(zhì)的獨(dú)特發(fā)現(xiàn)是理論預(yù)示未知世界這一說(shuō)法的一個(gè)極好說(shuō)明。這使得預(yù)測(cè)未知理論來(lái)獲得人類的滿意將成為一個(gè)事實(shí)。
詞語(yǔ)解釋
1.fundamental a.基本的;根本的
For something fundamental has changed inVenezuela.
因?yàn)樵谖瘍?nèi)瑞拉，有一些基本的東西已經(jīng)改變了。
2.equation n.相等;均衡
I can t make this equation come out.
我不會(huì)解這個(gè)方程式。
3.particle n.顆粒;微粒;極小量
We can see the dust particles floating in the sunlight clearly.
我們可以很清楚地看到陽(yáng)光下的灰塵顆粒。
4.experiment n.試驗(yàn);實(shí)驗(yàn)
The researchers are repeating the experiment on rats.
研究人員用老鼠反覆做該試驗(yàn)。
5.available a.可利用的;可得到的
Do you have a room available?
你們有空房間嗎?
Fundamental physics
基礎(chǔ)物理學(xué)
Antimatter of fact
反物質(zhì)現(xiàn)狀
Researchers at CERN have held on to anti-atoms fora full quarter of an hour
歐洲核子研究中心的研究人員已經(jīng)讓反原子停留了十五分鐘。
READERS who were paying attention in their maths classes may recall that quadraticequations often have two solutions, one positive and one negative.
關(guān)注數(shù)字課的讀者們或許會(huì)想到二次方程通常會(huì)有兩個(gè)解，一個(gè)是正值，一個(gè)是負(fù)值。
So when, in 1928, a British physicist called Paul Dirac solved such an equation relating to theelectron, the fact that one answer described the opposite of that particle might have beenbrushed aside as a curiosity.
因此在1928年，一個(gè)名叫保羅狄拉克的英國(guó)物理學(xué)家給出了有關(guān)電子的一個(gè)方程的解，然而事實(shí)上，這個(gè)結(jié)果表達(dá)的是一種相反的粒子，這個(gè)結(jié)果或許會(huì)被考慮后舍棄。
But it wasn t.
然而事實(shí)并非如此。
Instead, Dirac interpreted it as antimatterand, four years later, it turned up in a realexperiment.
相反，狄拉克將其解釋為反物質(zhì)并且在四年后，在現(xiàn)實(shí)的實(shí)驗(yàn)中驗(yàn)證了它的存在。
Since then antimatterfirst, anti-electrons, known as positrons, and then antiversions of allother particles of matterhas become a staple of both real science and the fictional sort.
從那時(shí)起，反物質(zhì)最初是反電子，也就是俗稱的質(zhì)子，接著就是其他粒子的反物質(zhì)這已經(jīng)成了現(xiàn)實(shí)科學(xué)和虛構(gòu)類別之間的主要組成部分。
What has not been available for study until recently, however, is entire anti-atoms.
這樣的研究一直以來(lái)沒(méi)有突破直到最近的完全的反原子的出現(xiàn)。
A handful have been made in various laboratories, and even held on to for a few seconds.
在各個(gè)實(shí)驗(yàn)室已經(jīng)有一小部分的反原子被發(fā)現(xiàn)，即便它們僅僅存在了幾秒鐘的時(shí)間。
But none has hung around long enough to be examined in detail because, famously,antimatter and matter annihilate each other on contact.
不過(guò)沒(méi)有一個(gè)停留了足夠長(zhǎng)的時(shí)間用以仔細(xì)地研究他們，眾所周知，反物質(zhì)與物質(zhì)只要相遇就會(huì)湮滅。
But that has now changed, with the preservation of several hundred such atoms for severalminutes by Jeffrey Hangst and his colleagues at CERN, the main European particle-physicslaboratory near Geneva.
然而隨著在歐洲核子研究中心這個(gè)在日內(nèi)瓦附近主要的歐洲粒子物理實(shí)驗(yàn)室里，該機(jī)構(gòu)的杰弗瑞?漢斯特與其同事讓數(shù)百個(gè)這樣的原子維護(hù)了幾分鐘，原來(lái)的情況現(xiàn)在已有所改觀。
The reason this is important is that Dirac s equation is misleading.
狄拉克方程是一種誤導(dǎo)這個(gè)原因是很重要的一點(diǎn)。
Antimatter cannot be the perfect opposite of matter, otherwise neither would exist at all.
反物質(zhì)并不是完全的反物質(zhì)，否則它將無(wú)法存在。
If they truly were perfect opposites, equal amounts of the two would have been made in theBig Bang,
如果實(shí)際上它們是完全相反的，那么相同的數(shù)量的反物質(zhì)早在大爆炸產(chǎn)生時(shí)就已經(jīng)互相湮滅了，
and they would have annihilated each other long since, leaving only light and other forms ofelectromagnetic radiation to fill the universe.
它們只以電磁波的形式留在宇宙中。
That galaxies, stars and planetsand physicists to ponder such thingsexist thereforemeans there is a subtle asymmetry between matter and antimatter, and that naturesomehow favours the former.
星系，恒星以及行星物理學(xué)家在在仔細(xì)思考這樣的事情它們都已經(jīng)存在了，這意味著在物質(zhì)與反物質(zhì)之間有著一些不可思議的不對(duì)稱性，自然界在某種程度上是偏愛(ài)于前者。
Two such asymmetries have indeed been found. But neither is big enough to explain why somuch matter has survived. Being able to look at entire anti-atoms might give some furtherclue.
兩個(gè)這樣的不對(duì)稱性實(shí)際上已經(jīng)被發(fā)現(xiàn)了。不過(guò)二者都不足以解釋為什么如此多的物質(zhì)存活了下來(lái)。對(duì)于整個(gè)反原子的研究或許能夠提供進(jìn)一步的線索。
Last November the ALPHA collaboration at CERN, which Dr Hangst leads, managed to putpositrons into orbit around 38 antiprotonsthus creating anti-hydrogen atomsand thenheld on to them in a magnetic trap for a few tenths of a second.
去年11月，歐洲核子研究中心由漢斯特博士領(lǐng)導(dǎo)的阿爾法項(xiàng)目成功地將正電子放入了38個(gè)反質(zhì)子周圍的軌道中因此形成了反氫原子接著將它們放入了一個(gè)磁阱，持續(xù)了零點(diǎn)幾秒。
Now, as they report in Nature Physics, the researchers have used their device to preserveanti-hydrogen for 16 minutes .
隨著他們?cè)凇蹲匀晃锢韺W(xué)》發(fā)布報(bào)告，研究人員又利用他們的設(shè)備維持了反氫原子16分鐘。
This gives the anti-atoms plenty of time to settle into their ground state, the most stablecondition a particle or atom can attain.
這讓反原子有充足的時(shí)間待在基態(tài)這是一個(gè)粒子或原子能夠達(dá)到的最穩(wěn)定狀態(tài)。
As a result, Dr Hangst and his colleagues can look in a leisurely manner for novel ways thatantimatter might differ from the common-or-garden variety.
因此漢斯特博士和他同事憑這種新奇的方式有充足的時(shí)間來(lái)觀察反物質(zhì)這或許不同于平日的各種狀態(tài)。
Their first experiment will involve nudging the trapped anti-atoms with microwaves.
他們的第一次實(shí)驗(yàn)將會(huì)用不同頻率微波輕推被困的反原子。
If the frequency of these microwaves is just right, they will flip an anti-atom s spin.
如果這些微波的頻率恰到好處，他們將會(huì)使這些反原子產(chǎn)生自旋翻轉(zhuǎn)。
That reverses the polarity of the atom s magnetic field and ejects it from the trap.
這就會(huì)改變?cè)釉瓉?lái)的極性和磁場(chǎng)，原子就會(huì)從磁阱中彈出去。
The frequency needed to do this can then be compared with that which flips the spin of anordinary hydrogen atom.
這些測(cè)試的頻率將會(huì)與翻轉(zhuǎn)普通氫原子的頻率作對(duì)比。
If the two turn out to be different, it will point towards the nature of the mysterious cosmicasymmetry.
如果兩個(gè)頻率是不同的，那么它將會(huì)指向神秘的宇宙不對(duì)稱性。
Besides being of huge interest, such a result would also have a pleasing symmetry of itsown.
除了巨大的興趣外，這樣的結(jié)果對(duì)于本身也將是一個(gè)值得欣喜的對(duì)稱。
The original discovery of antimatter was a nice example of theory predicting anundiscovered fact. This would be a fact that repaid the compliment by predicting anundiscovered theory.
反物質(zhì)的獨(dú)特發(fā)現(xiàn)是理論預(yù)示未知世界這一說(shuō)法的一個(gè)極好說(shuō)明。這使得預(yù)測(cè)未知理論來(lái)獲得人類的滿意將成為一個(gè)事實(shí)。
詞語(yǔ)解釋
1.fundamental a.基本的;根本的
For something fundamental has changed inVenezuela.
因?yàn)樵谖瘍?nèi)瑞拉，有一些基本的東西已經(jīng)改變了。
2.equation n.相等;均衡
I can t make this equation come out.
我不會(huì)解這個(gè)方程式。
3.particle n.顆粒;微粒;極小量
We can see the dust particles floating in the sunlight clearly.
我們可以很清楚地看到陽(yáng)光下的灰塵顆粒。
4.experiment n.試驗(yàn);實(shí)驗(yàn)
The researchers are repeating the experiment on rats.
研究人員用老鼠反覆做該試驗(yàn)。
5.available a.可利用的;可得到的
Do you have a room available?
你們有空房間嗎?
