Chancewu's Singular particles

分享个搞怪的Rap...其实也不"怪"

国内有九维空间兄的<退相干><爱在量子力学前>国外的也有不少哈 这不咱最近听到了首关于Dark Matter的Rap抓过来共享下

歌词如下：

The Dark Matter Rap: Cosmological History for the MTV Generation

My name is Fritz Zwicky,
I can be kind of prickly,
This song had better start
by giving me priority.
Whatever anybody says,
I said in 1933.
Observe the Coma cluster,
the redshifts of the galaxies
imply some big velocities.
They're moving so fast,
there must be missing mass!
Dark matter.

Dark matter: Do we need it? What is it? Where is it? How much?
Do we need it? Do we need it? Do we need it? Do we need it?

For nearly forty years,
the dark matter problems sits.
Nobody gets worried 'cause, "It's only crazy Fritz."
The next step's not 'til the early 1970s,
Ostriker and Peebles,
dynamics of the galaxies,
cold disk instabilities.
They say: "If the mass, were sitting in the stars,
all those pretty spirals, ought to be bars!
Self-gravitating disks? Uh-uh, oh no.
What those spirals need is a massive halo.
And hey, look over here, check out these observations,
Vera Rubin's optical curves of rotation,
they can provide our needed confirmation:
Those curves aren't falling, they're FLAT!
Dark matter's where it's AT!

Dark matter: Do we need it? What is it? Where is it? How much?
What is it? What is it? What is it? What is it?

And so the call goes out for the dark matter candidates:
black holes, snowballs, gas clouds, low mass stars, or planets.
But we quickly hit a snag because galaxy formation
requires too much structure in the background radiation
if there's only baryons and adiabatic fluctuations.
The Russians have an answer: "We can solve the impasse.
Lyubimov has shown that the neutrino has mass."
Zel'dovich cries, "Pancakes! The dark matter's HOT."
Carlos Frenk, Simon White, Marc Davis say, "NOT!
Quasars are old, and the pancakes must be young.
Forming from the top down it can't be done."
So neutrinos hit the skids, and the picture's looking black.
But California laid-back, Blumenthal & Primack
say, "Don't have a heart attack.
There's lots of other particles.
Just read the physics articles.
Take this pretty theory that's called supersymmetry.
What better for dark matter than the L-S-P?
The mass comes in at a ~ keV,
and that's not hot, that's warm."
Jim Peebles says, "Warm? Don't be half-hearted.
Let's continue the trend that we have started.
I'll stake out a position that's bold:
dark matter's not hot, not warm, but COLD."
Well cold dark matter causes overnight sensations:
hand-waving calculations,
computer simulations,
detailed computations of the background fluctuations.
Results are good, and the prospects look bright.
Here's a theory that works! Well, maybe not quite.

Dark matter: Do we need it? What is it? Where is it? How much?
Where is it? How much? Where is it? How much?

We have another puzzle that goes back to Robert Dicke.
Finding a solution has proven kind of tricky.
The CMB's so smooth, it's as if there'd been a compact
between parts of the universe that aren't in causal contact.
Alan Guth says, "Inflation,
will be our salvation,
give smoothness of the universe a causal explanation,
and even make the galaxies from quantum fluctuations!
There is one prediction, from which it's hard to run.
If inflation is correct, then Omega should be one."
Observers say, "Stop, no, sorry, won't do.
Look at these clusters, Omega's point 2."
The theorists respond, "We have an explanation.
The secret lies in biased galaxy formation.
We're not short of critical mass density.
Just some regions, are missing luminosity."
Observers roll their eyes, and they start to get annoyed,
But the theorists reply, "There's dark matter in the voids."

Dark matter: Do we need it? What is it? Where is it? How much?
Do we need it? Do we need it? Do we need it? Do we need it?

Along comes Moti Milgrom,
who's here to tell us all:
"This dark matter claptrap
has got you on the wrong track.
You're all too mired in conventionality,
wedded to your standard theory of gravity,
seduced by the elegance of General Relativity.
Just change your force law, that's the key.
Give me one free parameter, and I'll explain it all."
"Not so," claim Lake, and Spergel, et al.,
"On dwarf galaxies, your theory does fall."
The argument degenerates; it's soon a barroom brawl.

Dark matter: Do we need it? What is it? Where is it? How much?
What is it? What is it? What is it? What is it?

New observations hit the theory like an ice cold shower.
They show that cold dark matter has too little large scale power.
Says Peebles: "Cold dark matter? My feeblest innovation.
An overly aesthetic, theoretical abberation.
Our theories must have firmer empirical foundation.
Shed all this extra baggage, including the carry-ons.
Use particles we know, i.e., the baryons.
Others aren't convinced, and a few propose a mixture
of matter hot and cold, perhaps with strings or texture.
But nowadays most physicists are captured by the synergy
of inflation, cold dark matter, and repulsive dark energy.
Lambda or quintessence makes the whole picture integrate
by causing the expansion of the universe to accelerate.
New physics is exciting, and it gives us more to do.
Before we had one mystery. Now we have two.

So now you've heard my lecture, and it's time to end the session
with the standard closing line: Thank you, any questions?

Mp3看这里：http://www.symmetrymagazine.org/files/200702/darkmatterrap.mp3

    最近听了段《老罗语录》不知道老罗是谁的应该不多吧...也许我说薛定愕有人不知道我说海森堡有人不知道...不过当年红极一时的新东方学校的老罗——罗永浩 应该都知道吧...他的特点是——能白活，扯淡，贫还是贫...

    这个...真不知道的话我转述段他的语录吧:

    真正的猛男，敢于直视惨淡的人生。猛男的另一个特征，哭的时候要躲起来。

    你数学不好，还可以去当英国首相嘛（邱及耳），不行也可以去当台湾作家嘛（李敖），还可以去英国做诗嘛（徐只摸），当然以上的都需要签证。那不行你可以在国内当作家嘛（钱钟书），最次你也可以当个老师嘛（罗永浩），如果你连课都讲不了，你也可以去当个校长吧（俞敏洪）。

     Caculus 一看我就头发麻。听说马克思当年写资本论时累了就做两道微积分休息休息。
当年我就因此埋下了对马克思的深仇大恨。但后来经证实是算术题不是微积分。原来是算术题啊，嘿嘿。我是中国大陆唯一考gre不答数学部分的人。当年我答到数学section的时候，第一题我花了7分钟读题，咦？没读懂。他妈的不做了。按下一题。没想到机器提示我必须选一个答案。我当时汗就下来。我来考试是想得到自己的真实成绩啊。它这蒙错了还好，蒙对了怎么办啊！ETS 怎么也没想到，还有这样的奇男子，蒙对了会很伤心的。我一想，都不做了。于是把整个数学 section全放掉。直接做下面的section。考了几次GRE全没答数学 section。后来ETS给我寄成绩时问我∶By the way，能问问你为什么每次都不答数学部分呢？你有什么目的么？嘿嘿，我不告诉你。我给 ETS写信∶如果你给我退数学部分的考试费我就告诉你。他们没理我，于是我也就没理他们。‘

     雷锋一生扶过六千个老太太过马路

    so many...不转了...有兴趣的自己去搜索... 我听的是他说减肥那段...

    这家伙是个大胖子...说自己减肥成功...怎么减的？是这样的——每天只吃蔬菜水果：绿色的最好、别的什么都不吃...每天跑2万米、但是太胖跑不下来怎么办？走两万米...

    牛吧走两万米...根据我个人经验...我晚上慢跑大概45分钟可以跑4千米、最快速度的话1000米快跑也是要4分钟的...算算他两万米要多长时间...走完...sigh...

    不过总体来说跑步确实也是个好的减肥方法 咱是从14X的体重“跑”到不到11X...所以说上面的话我的分析是可信的——他又在扯淡... 

呵呵...第一次写诗...

　　1900年
　　就是我要说这天
　　天气特别阴沉
　　
　　傍晚
　　我们看电子
　　
　　午夜

　　我们看光子
　　
　　啊，电子和光子，
　　真奇特

...好吧我承认 其实这个诗是自动生成的...地址如下

http://www.clie.com.cn/poem/ 

你怎么能想象一个中文从初中到高中及格次数为个位数，高考语文成绩连总成绩一半都不到的文盲写诗呢~

我们学校号称有全国最长的隧道...不过里面又黑又潮湿

我们学校有华中地区最好的自然类博物馆...但学校里面 学校的女生一样恐龙,,,

我们学校有最大的一篇化石林...但是...但是...

哈哈~民那桑 知道咱什么学校的了吧~~对了 中国最大的恐龙公园——侏罗纪公园...

在我们这里广泛流传这这么一首诗：

地大美女如云， 恐龙如星。

今夜星光灿烂，明天晴空万里。 

....

在说个笑话~分别是两个人的对话：

女A：听说你男朋友是地大的？

女B：没有没有，我哪有那么好福气。

男A：听说你女哦恩有是地大的？

男B：（愤怒状）滚！你女朋友才是地大的。

哈哈~~这就是咱的学校~~so...