"Constants and units in physics"의 두 판 사이의 차이

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[http://van.physics.illinois.edu/qa/listing.php?id=1249 20 constants of the universe?]
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3 basic units
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length
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time
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mass
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25번째 줄: 33번째 줄:
 
 
 
 
  
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<h5>constants of standard </h5>
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<h5>constants of standard model</h5>
  
 
masses of electron, muon, and tau leptons (3) 
 
masses of electron, muon, and tau leptons (3) 
  
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<br>
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masses of six quarks: up, down, strange, charm, top, bottom (6) 
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mixing matrix of the down-type quarks, which is parameterized by four independent angles. To find out more, look up "CKM Matrix" or "Cabibbo-Kobayashi-Maskawa Mixing Matrix" (4) 
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The strong coupling constant alpha_s (1) 
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The fine structure constant alpha_em (1) 
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The Fermi constant G_F (governs weak decay rates) (1) 
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The Z boson mass M_Z (1) 
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The Higgs boson mass (1) (the W mass can be calculated from the other parameters and the theory) 
 +
 
 +
Gravity has a strength parameterized by G_N, Newton’s gravitational constant (1). 
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That’s 19. Two constants, the speed of light and Planck’s constant, define our units of length and time and energy. 
 +
 
 +
The neutrino masses are another 3, and they have a mixing matrix just like the down-type quarks for another four parameters, for a total of 28. 
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 +
These are the constants of the Standard Model, which is incomplete.
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 +
 
 +
 
 +
 
 +
 
 +
The Standard Model fails to explain dark matter and dark energy. Dark energy may be parameterizable with just one more constant (Einstein’s famous "cosmological constant") or there may be a much richer set of things to understand about it. 
 +
 
 +
Dark matter is also a mystery. My favorite candidate for what it is is supersymmetric partners of ordinary matter. But then all the supersymmetric partners have masses and mixings and lots of numbers to describe them, introducing (at one count I can dig up in the Particle Data Group’s review) of 105 new parameters on top of those of the Standard Model. 
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[http://van.physics.illinois.edu/qa/listing.php?id=1249 20 constants of the universe?]
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[http://van.physics.illinois.edu/qa/listing.php?id=1249 ]
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<h5 style="line-height: 3.428em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic', dotum, gulim, sans-serif; font-size: 1.166em; background-image: ; background-color: initial; background-position: 0px 100%;">간단한 소개</h5>
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masses of six quarks: up, down, strange, charm, top, bottom (6) 
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<h5 style="line-height: 3.428em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic', dotum, gulim, sans-serif; font-size: 1.166em; background-image: ; background-color: initial; background-position: 0px 100%;">하위주제들</h5>
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==== 하위페이지 ====
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* [http://pythagoras0.springnote.com/pages/1964250 0 토픽용템플릿]<br>
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** [http://pythagoras0.springnote.com/pages/2060652 0 상위주제템플릿]<br>
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<h5 style="line-height: 3.428em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic', dotum, gulim, sans-serif; font-size: 1.166em; background-image: ; background-color: initial; background-position: 0px 100%;">재미있는 사실</h5>
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<h5 style="line-height: 3.428em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic', dotum, gulim, sans-serif; font-size: 1.166em; background-image: ; background-color: initial; background-position: 0px 100%;">관련된 단원</h5>
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<h5 style="line-height: 3.428em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic', dotum, gulim, sans-serif; font-size: 1.166em; background-image: ; background-color: initial; background-position: 0px 100%;">많이 나오는 질문</h5>
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*  네이버 지식인<br>
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** http://kin.search.naver.com/search.naver?where=kin_qna&query=
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<h5 style="line-height: 3.428em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic', dotum, gulim, sans-serif; font-size: 1.166em; background-image: ; background-color: initial; background-position: 0px 100%;">관련된 고교수학 또는 대학수학</h5>
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<h5 style="line-height: 3.428em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic', dotum, gulim, sans-serif; font-size: 1.166em; background-image: ; background-color: initial; background-position: 0px 100%;">관련된 다른 주제들</h5>
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* [[3275485|Particle physics : Quirks and the Standard Models]]<br>
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<h5 style="line-height: 3.428em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic', dotum, gulim, sans-serif; font-size: 1.166em; background-image: ; background-color: initial; background-position: 0px 100%;">표준적인 도서 및 추천도서</h5>
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* [[2009년 books and articles|찾아볼 수학책]]
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* http://gigapedia.info/1/
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* http://gigapedia.info/1/
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* http://gigapedia.info/1/
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* http://gigapedia.info/1/
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* http://gigapedia.info/1/
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* http://www.amazon.com/s/ref=nb_ss_gw?url=search-alias%3Dstripbooks&field-keywords=
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<br>
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<h5 style="line-height: 3.428em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic', dotum, gulim, sans-serif; font-size: 1.166em; background-image: ; background-color: initial; background-position: 0px 100%;">참고할만한 자료</h5>
  
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mixing matrix of the down-type quarks, which is parameterized by four independent angles. To find out more, look up "CKM Matrix" or "Cabibbo-Kobayashi-Maskawa Mixing Matrix" (4) 
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* http://www.zentralblatt-math.org/zmath/en/
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* http://pythagoras0.springnote.com/
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* http://math.berkeley.edu/~reb/papers/index.html
  
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<br>
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* http://ko.wikipedia.org/wiki/
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* http://en.wikipedia.org/wiki/
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* http://viswiki.com/en/
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* http://front.math.ucdavis.edu/search?a=&t=&c=&n=40&s=Listings&q=
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* http://www.ams.org/mathscinet/search/publications.html?pg4=AUCN&s4=&co4=AND&pg5=TI&s5=&co5=AND&pg6=PC&s6=&co6=AND&pg7=ALLF&co7=AND&Submit=Search&dr=all&yrop=eq&arg3=&yearRangeFirst=&yearRangeSecond=&pg8=ET&s8=All&s7=
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* 다음백과사전 http://enc.daum.net/dic100/search.do?q=
  
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The strong coupling constant alpha_s (1) 
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<br>
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The fine structure constant alpha_em (1) 
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<h5 style="line-height: 3.428em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic', dotum, gulim, sans-serif; font-size: 1.166em; background-image: ; background-color: initial; background-position: 0px 100%;">이미지 검색</h5>
  
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<br>
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* http://commons.wikimedia.org/w/index.php?title=Special%3ASearch&search=
  
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The Fermi constant G_F (governs weak decay rates) (1) 
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<br>
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<h5 style="line-height: 3.428em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic', dotum, gulim, sans-serif; font-size: 1.166em; background-image: ; background-color: initial; background-position: 0px 100%;">동영상</h5>
  
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The Z boson mass M_Z (1) 
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* http://www.youtube.com/results?search_type=&search_query=
  
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<br>
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The Higgs boson mass (1) (the W mass can be calculated from the other parameters and the theory) 
+
<h5 style="line-height: 3.428em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic', dotum, gulim, sans-serif; font-size: 1.166em; background-image: ; background-color: initial; background-position: 0px 100%;">관련기사</h5>
  
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<br>
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네이버 뉴스 검색 (키워드 수정)
  
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Gravity has a strength parameterized by G_N, Newton’s gravitational constant (1). 
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* http://news.search.naver.com/search.naver?where=news&x=0&y=0&sm=tab_hty&query=
 +
* http://news.search.naver.com/search.naver?where=news&x=0&y=0&sm=tab_hty&query=
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* http://news.search.naver.com/search.naver?where=news&x=0&y=0&sm=tab_hty&query=
 +
* http://news.search.naver.com/search.naver?where=news&x=0&y=0&sm=tab_hty&query=
 +
* http://news.search.naver.com/search.naver?where=news&x=0&y=0&sm=tab_hty&query=
 +
* http://news.search.naver.com/search.naver?where=news&x=0&y=0&sm=tab_hty&query=
  
−
<br>
+
 
  
−
That’s 19. Two constants, the speed of light and Planck’s constant, define our units of length and time and energy. 
+
<h5 style="line-height: 3.428em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic', dotum, gulim, sans-serif; font-size: 1.166em; background-image: ; background-color: initial; background-position: 0px 100%;">블로그</h5>
  
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That gets me up to 21. The neutrino masses are another 3, and they have a mixing matrix just like the down-type quarks for another four parameters, for a total of 28. 
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* 구글 블로그 검색 http://blogsearch.google.com/blogsearch?q=
 +
* 트렌비 블로그 검색 http://www.trenb.com/search.qst?q=
  
−
<br>
+
 
  
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These are the constants of the Standard Model, which is incomplete. The Standard Model fails to explain dark matter and dark energy. Dark energy may be parameterizable with just one more constant (Einstein’s famous "cosmological constant") or there may be a much richer set of things to understand about it. 
+
 
  
−
<br>
+
 
  
−
Dark matter is also a mystery. My favorite candidate for what it is is supersymmetric partners of ordinary matter. But then all the supersymmetric partners have masses and mixings and lots of numbers to describe them, introducing (at one count I can dig up in the Particle Data Group’s review) of 105 new parameters on top of those of the Standard Model.
+
<h5 style="line-height: 3.428em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; color: rgb(34, 61, 103); font-family: 'malgun gothic', dotum, gulim, sans-serif; font-size: 1.166em; background-image: ; background-color: initial; background-position: 0px 100%;">TeX 작업</h5>

2009년 8월 25일 (화) 06:59 판

3 basic units

length

time

mass

 

 

Planck constant

speed of light

fine structure constant

 

 

units

 

natural units

rest energy of the proton is roughly 1 GeV

\(10^9 eV = 1 GeV \)

 

constants of standard model

masses of electron, muon, and tau leptons (3) 

masses of six quarks: up, down, strange, charm, top, bottom (6) 

mixing matrix of the down-type quarks, which is parameterized by four independent angles. To find out more, look up "CKM Matrix" or "Cabibbo-Kobayashi-Maskawa Mixing Matrix" (4) 

The strong coupling constant alpha_s (1) 

The fine structure constant alpha_em (1) 

The Fermi constant G_F (governs weak decay rates) (1) 

The Z boson mass M_Z (1) 

The Higgs boson mass (1) (the W mass can be calculated from the other parameters and the theory) 

Gravity has a strength parameterized by G_N, Newton’s gravitational constant (1). 

That’s 19. Two constants, the speed of light and Planck’s constant, define our units of length and time and energy. 

The neutrino masses are another 3, and they have a mixing matrix just like the down-type quarks for another four parameters, for a total of 28. 

These are the constants of the Standard Model, which is incomplete.

 

 

The Standard Model fails to explain dark matter and dark energy. Dark energy may be parameterizable with just one more constant (Einstein’s famous "cosmological constant") or there may be a much richer set of things to understand about it. 

Dark matter is also a mystery. My favorite candidate for what it is is supersymmetric partners of ordinary matter. But then all the supersymmetric partners have masses and mixings and lots of numbers to describe them, introducing (at one count I can dig up in the Particle Data Group’s review) of 105 new parameters on top of those of the Standard Model. 

20 constants of the universe?

[1]

 

 

간단한 소개

 

 

하위주제들

 

 

 

하위페이지

 

 

재미있는 사실

 

 

관련된 단원

 

 

많이 나오는 질문

 

관련된 고교수학 또는 대학수학

 

 

관련된 다른 주제들

 

표준적인 도서 및 추천도서

 

 

참고할만한 자료

 

 

이미지 검색

 

 

동영상

 

관련기사

네이버 뉴스 검색 (키워드 수정)

 

블로그

 

 

 

TeX 작업
원본 주소 "https://wiki.mathnt.net/index.php?title=Constants_and_units_in_physics&oldid=34488"