A***e
发帖数: 130 | 1 http://nautil.us/blog/the-present-phase-of-stagnation-in-the-foundations-of-physics-is-not-normal
Nothing is moving in the foundations of physics. One experiment after the
other is returning null results: No new particles, no new dimensions, no new
symmetries. Sure, there are some anomalies in the data here and there, and
maybe one of them will turn out to be real news. But experimentalists are
just poking in the dark. They have no clue where new physics may be to find.
And their colleagues in t... 阅读全帖 |
|
m********r
发帖数: 811 | 2 Jump to: navigation, search
Physics Letters is a scientific journal publisher by Elsevier.
* Physics Letters A: condensed matter physics, theoretical physics,
nonlinear science, statistical physics, mathematical and computational
physics, general and cross-disciplinary physics (including foundations),
atomic, molecular and cluster physics, plasma and fluid physics, optical
physics, biological physics and nanoscience [1]
* Physics Letters B: nuclear physics, theoretical nuclear physics,
e |
|
发帖数: 1 | 3 【 以下文字转载自 Physics 讨论区 】
发信人: qinnanjoshua (), 信区: Physics
标 题: Postdoctoral Fellowship Positions in Medical Physics and Engineering
发信站: BBS 未名空间站 (Fri Oct 7 16:47:46 2016, 美东)
Postdoctoral Fellowship Positions in Medical Physics and Engineering
Multiple postdoctoral positions are immediately available in the Division of
Medical Physics and Engineering, Department of Radiation Oncology,
University of Texas Southwestern Medical Center (UTSW), for individuals who
are interested in pursuing a car... 阅读全帖 |
|
发帖数: 1 | 4 【 以下文字转载自 Physics 讨论区 】
发信人: qinnanjoshua (), 信区: Physics
标 题: Postdoctoral Fellowship Positions in Medical Physics and Engineering
发信站: BBS 未名空间站 (Fri Oct 7 16:47:46 2016, 美东)
Postdoctoral Fellowship Positions in Medical Physics and Engineering
Multiple postdoctoral positions are immediately available in the Division of
Medical Physics and Engineering, Department of Radiation Oncology,
University of Texas Southwestern Medical Center (UTSW), for individuals who
are interested in pursuing a car... 阅读全帖 |
|
s*********n
发帖数: 2283 | 5 【 以下文字转载自 WaterWorld 讨论区 】
标 题: [Breaking News] Obama wins Nobel Prize in Physics
关键字: nobel prize,Obama,Physics
发信站: BBS 未名空间站 (Fri Nov 12 16:52:55 2010, 美东)
http://www.thespoof.com/news/spoof.cfm?headline=s2i86280
Obama wins Nobel Prize in Physics
Written by Q. William Bacon
The Royal Swedish Academy of Sciences has awarded the 2010 Nobel Prize
in Physics to Barack Obama, current president of the United States.
Mr. Obama accepted the prize at the traditional royal ceremony in Oslo,
Norway. He... 阅读全帖 |
|
w*****1
发帖数: 220 | 6 Dear Readers,
We are happy to present the first five papers that are published in our
new, open access journal, Physical Review X. These papers, together with
others that are to be published in the coming weeks into September, will
constitute the first issue of the journal. Under PRX's open access
publishing model, they are free for you to read and use.
We are very encouraged by the breadth of their topical spread. It ranges
from the well-established field of atomic, molecular and optica... 阅读全帖 |
|
w*******e
发帖数: 15912 | 7 [转载] 看看中国的落后的物理科研现状，多么可怕！
作者: xylang (站内联系TA) 发布: 2005-12-06
review of modern physics 可谓是物理学界之至高无上无克配敌的刊物，从１９２９
年到现在共只有２７５３篇次的文章被发表，可见其分量多重啊，比起physical
review seriers 和 PRL 都高级很多啊，我一个南京大学的同学说就他们学校的一个
做群论的叫做陈金全的教授发过一次，并且他后来有可能再被邀请发一次，不幸他过早
的去世了，然后中国（至少内地）就没有一个发过这个东西。陈金全的那本名作我是有
的，是在北京遇到南京大学的一个博士，很好的一个人——一个很帅的大哥送给我的，
可惜我没有看，他从南京寄给我，当是真的很感动啊。
今天搜索了一下，结果如下：
首先，Set affiliation as "china", 发现如下２结果：
１）Quasinormal-mode expansion for waves in open systems
E. S. C. Ching, P. T. Leung, A. Maassen van de... 阅读全帖 |
|
w*******e
发帖数: 15912 | 8 [转载] 看看中国的落后的物理科研现状，多么可怕！
作者: xylang (站内联系TA) 发布: 2005-12-06
review of modern physics 可谓是物理学界之至高无上无克配敌的刊物，从１９２９
年到现在共只有２７５３篇次的文章被发表，可见其分量多重啊，比起physical
review seriers 和 PRL 都高级很多啊，我一个南京大学的同学说就他们学校的一个
做群论的叫做陈金全的教授发过一次，并且他后来有可能再被邀请发一次，不幸他过早
的去世了，然后中国（至少内地）就没有一个发过这个东西。陈金全的那本名作我是有
的，是在北京遇到南京大学的一个博士，很好的一个人——一个很帅的大哥送给我的，
可惜我没有看，他从南京寄给我，当是真的很感动啊。
今天搜索了一下，结果如下：
首先，Set affiliation as "china", 发现如下２结果：
１）Quasinormal-mode expansion for waves in open systems
E. S. C. Ching, P. T. Leung, A. Maassen van de... 阅读全帖 |
|
发帖数: 1 | 9 南开大学物理科学学院
School of Physics,Nankai University
2017 International Symposium on Advances in Physical Science
(NKIS 2017) School of Physics, Nankai University
Overview
School of Physics, Nankai University in Tianjin, China has a history of
nearly 100 years. It now consists of 132 faculties, around 600 undergraduate
students and 300 graduate students. The school is supported by the Ministry
of Education under “211” and “985” programs. Our research fields
include optics... 阅读全帖 |
|
发帖数: 1 | 10 NKIS 2017
2017-09-27 南开物理
2017 International Symposium on Advances in Physical Science(NKIS 2017)
School of Physics, Nankai University
Overview
School of Physics, Nankai University in Tianjin, China has a history of
nearly 100 years. It now consists of 132 faculties, around 600 undergraduate
students and 300 graduate students. The school is supported by the Ministry
of Education under “211” and “985” programs. Our research fields
include optics, theoretical physics, condensed matter physics, che... 阅读全帖 |
|
x********i
发帖数: 905 | 11 2016 Breakthrough Prize in Fundamental Physics
The Breakthrough Prize in Fundamental Physics recognizes major insights into
the deepest questions of the Universe.
To the five teams below and their combined 1,377 team leaders and members
the award is presented for the fundamental discovery and exploration of
neutrino oscillations, revealing a new frontier beyond, and possibly far
beyond, the standard model of particle physics.
Daya Bay Reactor Neutrino Experiment, led by Yifang Wang, Institute of... 阅读全帖 |
|
s*********n
发帖数: 2283 | 12 http://www.thespoof.com/news/spoof.cfm?headline=s2i86280
Obama wins Nobel Prize in Physics
Written by Q. William Bacon
The Royal Swedish Academy of Sciences has awarded the 2010 Nobel Prize
in Physics to Barack Obama, current president of the United States.
Mr. Obama accepted the prize at the traditional royal ceremony in Oslo,
Norway. He addressed the distinguished gathering.
"Last year, you honored me with the Nobel Peace Prize, given in
anticipation of future actions I would take in ending mi... 阅读全帖 |
|
k********h
发帖数: 22 | 13 About Us:
ROBLOX is a leading user-generated gaming site that makes players the
architects of their own 3D worlds, drawing over one billion page views and
21 million in-game hours each month. The site is ranked #1 in the US for
total engagement time within the 8-14 year old segment, and is rapidly
growing in popularity amongst players aged 15+. Our vision is to become the
leader in user-generated gaming for all ages, around the world. On ROBLOX,
players use core building components to create ela... 阅读全帖 |
|
k********h
发帖数: 22 | 14 About Us:
ROBLOX is a leading user-generated gaming site that makes players the
architects of their own 3D worlds, drawing over one billion page views and
21 million in-game hours each month. The site is ranked #1 in the US for
total engagement time within the 8-14 year old segment, and is rapidly
growing in popularity amongst players aged 15+. Our vision is to become the
leader in user-generated gaming for all ages, around the world. On ROBLOX,
players use core building components to create ela... 阅读全帖 |
|
s*********n
发帖数: 2283 | 15 http://www.thespoof.com/news/spoof.cfm?headline=s2i86280
Obama wins Nobel Prize in Physics
Written by Q. William Bacon
The Royal Swedish Academy of Sciences has awarded the 2010 Nobel Prize
in Physics to Barack Obama, current president of the United States.
Mr. Obama accepted the prize at the traditional royal ceremony in Oslo,
Norway. He addressed the distinguished gathering.
"Last year, you honored me with the Nobel Peace Prize, given in
anticipation of future actions I would take in ending mi... 阅读全帖 |
|
k********h
发帖数: 22 | 16 About Us:
ROBLOX is a leading user-generated gaming site that makes players the
architects of their own 3D worlds, drawing over one billion page views and
21 million in-game hours each month. The site is ranked #1 in the US for
total engagement time within the 8-14 year old segment, and is rapidly
growing in popularity amongst players aged 15+. Our vision is to become the
leader in user-generated gaming for all ages, around the world. On ROBLOX,
players use core building components to create ela... 阅读全帖 |
|
k********h
发帖数: 22 | 17 About Us:
ROBLOX is a leading user-generated gaming site that makes players the
architects of their own 3D worlds, drawing over one billion page views and
21 million in-game hours each month. The site is ranked #1 in the US for
total engagement time within the 8-14 year old segment, and is rapidly
growing in popularity amongst players aged 15+. Our vision is to become the
leader in user-generated gaming for all ages, around the world. On ROBLOX,
players use core building components to create ela... 阅读全帖 |
|
S*******l
发帖数: 4637 | 18 http://www.nature.com/nphys/journal/v4/n3/full/nphys899.html?foxtrotcallback=true
Thesis
Nature Physics 4, 159 (2008)
doi:10.1038/nphys899
Physics is dead, long live physics!
Mark Buchanan
Introduction
It would seem unlikely that any part of science, including physics, could
ever come to something like an 'end' — a point beyond which its subject
matter would be more or less exhausted. It's difficult to think of an
historical example of any 'dead' science; even fields as well-worn as
classical me... 阅读全帖 |
|
m**********t
发帖数: 385 | 19 Open Application in Philips Research China (Physics)
Department Description:
Philips Research is a highly multi-disciplinary research institute aiming at
providing leading innovative solutions to the Philips businesses. In many
innovations, physics is at the core. Examples of these include innovations
for our Lighting sector, where both fundamental and applied physics is
mandatory in designing new solutions in the area of LED and OLED light
sources. Other examples include MEMS-related activities... 阅读全帖 |
|
c*****a
发帖数: 1131 | 20 physical address,回美证和绿卡 要求provide physical address
申请了绿卡和回美证及工卡。递交这些申请的时候都详细填好了表格， 昨天收到了移
民局寄来的信，要求 provide physicall address 查申请表格，确认当时填写表格的
时候已经填写physical address ，请教，
如何provide physical address 。非常感谢！
附件如下：
This office is unable to
complete the processing of your Application for advance parole, Form
I-131, without additional information. Please submit the information
indicated below.Please provide the physical address of your residence.
if it is impossible for you to receive mail at your phys... 阅读全帖 |
|
m*****1
发帖数: 5 | 21 【 以下文字转载自 Physics 讨论区 】
发信人: mph2011 (mph), 信区: Physics
标 题: Postdoctoral position available in medical physics
关键字: postdoc medical physics
发信站: BBS 未名空间站 (Mon Apr 4 09:41:30 2011, 美东)
A postdoctoral position in medical physics is available in the
Department of Radiation Oncology at University of Texas Southwestern
Medical Center at Dallas. The successful candidate will work on projects
related to image-guided radiation therapy (IGRT) using cone beam CT
(CBCT), PET and fluoroscopic imaging. T... 阅读全帖 |
|
m*****1
发帖数: 5 | 22 【 以下文字转载自 Physics 讨论区 】
发信人: mph2011 (mph), 信区: Physics
标 题: Postdoctoral position available in medical physics
关键字: postdoc medical physics
发信站: BBS 未名空间站 (Mon Apr 4 09:41:30 2011, 美东)
A postdoctoral position in medical physics is available in the
Department of Radiation Oncology at University of Texas Southwestern
Medical Center at Dallas. The successful candidate will work on projects
related to image-guided radiation therapy (IGRT) using cone beam CT
(CBCT), PET and fluoroscopic imaging. T... 阅读全帖 |
|
z*******s
发帖数: 7 | 23 One postdoctoral position is immediately available in the Division of
Medical Physics and Engineering, Department of Radiation Oncology,
University of Texas Southwestern Medical Center (UTSW), for individual who
is interested in pursuing a career in medical physics. The research topics
are the development of advanced cancer radiotherapy techniques. Specific
problems cover major research topics in cancer radiotherapy, including
patient respiratory motion management strategies, dynamic treatment p... 阅读全帖 |
|
m*****1
发帖数: 5 | 24 【 以下文字转载自 Physics 讨论区 】
发信人: mph2011 (mph), 信区: Physics
标 题: Postdoctoral position available in medical physics
关键字: postdoc medical physics
发信站: BBS 未名空间站 (Mon Apr 4 09:41:30 2011, 美东)
A postdoctoral position in medical physics is available in the
Department of Radiation Oncology at University of Texas Southwestern
Medical Center at Dallas. The successful candidate will work on projects
related to image-guided radiation therapy (IGRT) using cone beam CT
(CBCT), PET and fluoroscopic imaging. T... 阅读全帖 |
|
z*******s
发帖数: 7 | 25 One postdoctoral position is immediately available in the Division of
Medical Physics and Engineering, Department of Radiation Oncology,
University of Texas Southwestern Medical Center (UTSW), for individual who
is interested in pursuing a career in medical physics. The research topics
are the development of advanced cancer radiotherapy techniques. Specific
problems cover major research topics in cancer radiotherapy, including
patient respiratory motion management strategies, dynamic treatment p... 阅读全帖 |
|
z*******s
发帖数: 7 | 26 One postdoctoral position is immediately available in the Division of
Medical Physics and Engineering, Department of Radiation Oncology,
University of Texas Southwestern Medical Center (UTSW), for individual who
is interested in pursuing a career in medical physics. The research topics
are the development of advanced cancer radiotherapy techniques. Specific
problems cover major research topics in cancer radiotherapy, including
patient respiratory motion management strategies, dynamic treatment p... 阅读全帖 |
|
m*****1
发帖数: 5 | 27 【 以下文字转载自 Physics 讨论区 】
发信人: mph2011 (mph), 信区: Physics
标 题: Postdoctoral position available in medical physics
关键字: postdoc medical physics
发信站: BBS 未名空间站 (Mon Apr 4 09:41:30 2011, 美东)
A postdoctoral position in medical physics is available in the
Department of Radiation Oncology at University of Texas Southwestern
Medical Center at Dallas. The successful candidate will work on projects
related to image-guided radiation therapy (IGRT) using cone beam CT
(CBCT), PET and fluoroscopic imaging. T... 阅读全帖 |
|
z*******s
发帖数: 7 | 28 One postdoctoral position is immediately available in the Division of
Medical Physics and Engineering, Department of Radiation Oncology,
University of Texas Southwestern Medical Center (UTSW), for individual who
is interested in pursuing a career in medical physics. The research topics
are the development of advanced cancer radiotherapy techniques. Specific
problems cover major research topics in cancer radiotherapy, including
patient respiratory motion management strategies, dynamic treatment p... 阅读全帖 |
|
P******t
发帖数: 215 | 29 Student Recruitment for Accelerator & FEL Physics
Dr. Yujong Kim who recently joined in Idaho State University (ISU)
Physics as a faculty, is trying to find two or three graduate students
who want to get their Ph.D. degrees on Accelerator Physics or Free
Electron Laser (FEL) Physics. If there are graduate students who are
interested in Advanced Accelerator Physics, FEL Physics, and Accelerator
based Nuclear Physics Applications, please contact Dr. Yujong Kim.
Dr Yujong Kim has been working for v |
|
P******t
发帖数: 215 | 30 Student Recruitment for Accelerator & FEL Physics
Dr. Yujong Kim who recently joined in Idaho State University (ISU)
Physics as a faculty, is trying to find two or three graduate students
who want to get their Ph.D. degrees on Accelerator Physics or Free
Electron Laser (FEL) Physics. If there are graduate students who are
interested in Advanced Accelerator Physics, FEL Physics, and Accelerator
based Nuclear Physics Applications, please contact Dr. Yujong Kim.
Dr Yujong Kim has been working for v |
|
P******t
发帖数: 215 | 31 Student Recruitment for Accelerator & FEL Physics
Dr. Yujong Kim who recently joined in Idaho State University (ISU)
Physics as a faculty, is trying to find two or three graduate students
who want to get their Ph.D. degrees on Accelerator Physics or Free
Electron Laser (FEL) Physics. If there are graduate students who are
interested in Advanced Accelerator Physics, FEL Physics, and Accelerator
based Nuclear Physics Applications, please contact Dr. Yujong Kim.
Dr Yujong Kim has been working for v |
|
P******t
发帖数: 215 | 32 Student Recruitment for Accelerator & FEL Physics
Dr. Yujong Kim who recently joined in Idaho State University (ISU)
Physics as a faculty, is trying to find two or three graduate students
who want to get their Ph.D. degrees on Accelerator Physics or Free
Electron Laser (FEL) Physics. If there are graduate students who are
interested in Advanced Accelerator Physics, FEL Physics, and Accelerator
based Nuclear Physics Applications, please contact Dr. Yujong Kim.
Dr Yujong Kim has been working for v |
|
w****w
发帖数: 7 | 33 Memorial Sloan-Kettering Cancer Center is located on the Upper East Side of
Manhattan, and is recognized as a world leader in clinical cancer care and
research. MSKCC is an equal-opportunity/affirmative action employer.
Openings are now available for research appointments in the Department of
Medical Physics at the postdoctoral level for individuals interested in
pursuing a career in medical physics. Positions include two years of
research in one of the following areas: development of physical i... 阅读全帖 |
|
m********g
发帖数: 10469 | 34 http://money.cnn.com/2016/09/14/media/dr-oz-donald-trump-taping/index.html
Donald Trump, a master showman, surprised the "Dr. Oz Show" studio audience
on Wednesday by revealing the results of a recent physical exam.
The "Oz" episode, taped on Wednesday morning, will not air until Thursday.
But a campaign spokeswoman confirmed that Trump handed Dr. Oz a one-page
summary of the physical exam he underwent last week.
The physical was conducted by Dr. Harold N. Bornstein, the same doctor who
previous... 阅读全帖 |
|
f********e
发帖数: 325 | 35 【 以下文字转载自 JobHunting 讨论区 】
发信人: freedeluge (Inevitable), 信区: JobHunting
标 题: 招人 - Sr. Physical Design Engineer
发信站: BBS 未名空间站 (Wed Oct 8 23:20:58 2014, 美东)
The successful candidate will join a highly talented, dynamic group of
engineers within Power Conversion Business Group to develop state of the art
AC/DC power control and solid state lighting control products. Individual
in this role is responsible for all aspect of digital physical design and
implementation from RTL to GDS design flow cov... 阅读全帖 |
|
h***o
发帖数: 539 | 36 综合编辑自三番版laoshiren的文章
physics 是个大流氓， 今天我看见他在green library 骚扰
一位洋mm 遭拒！！！！
详情稍后报道。。
太平洋时间9：00 am， physics 在heath center 做完体检之后，
甚感郁闷， 于是协同一友前往Main Quad照相，当破车行至green
library，遭遇一相识洋mm, 诸位看官啊！ 若你当时看见physics
的丑态，你一定。。。
我sick良久， 决定呆会再续。
此洋mm大眼留恋顾盼，身材相貌均与国花相若，
想physics之丑陋貌相，幼稚举态当无缘伴花，
不料初时此洋mm竟与之言谈甚欢， 想laoshiren
阅人无数，眼光犀利，预言怎会落空。在1分30秒之后
physics终于暴露其本来面目。。。
适才，physics强烈要求不要发文，
可见其行色狼之实却不敢担色狼之名
与网上形象盘若良人， 为张正义，特发
此文。。。待饭毕之后再详细报道。 |
|
p******c
发帖数: 40 | 37 跪求审稿机会， （AMO Physics, Physical Chemistry)领域
本人简单情况：
1. 化学物理专业博士， 现第4年postdoc。
2. 16篇第一作者，包括PRL, PCCP, JPCL, NJP
3. 曾经审稿5次，包括NJP , JPB, optics express, physica scripta
跪求如下领域：
(1) Imaging, tomography.
(2) Quantum control, laser control, STIRAP, EIT
(3) Ulfrafast physics
(4) ab initio calculation of potential energy surfaces, conical
intersections
(5) Chemical physics, scattering physics.
可以随时提供简历，文章列表。谢谢各位大牛。
A********[email protected] |
|
j*******d
发帖数: 142 | 38 My ranks in this field: (Please understand it as a personal taste, but bricks
are still welcome!)
1st level: Nature, Science,
2nd level: Physical Review Letters
3rd level: Applied Physics Letters, Physical Review B, Optics Letters
4th level: Journal of Applied Physics, Journal of Optical Society of America;
Applied Optics
5th level: Too many, like J. Phys. D; J. Phys. Condensed matter; Physics
Letters; Physica B; Solid State Comm.; Physica Statuts Solidi; Applied Physics
A&B; Journal of Crystal |
|
p******c
发帖数: 40 | 39 跪求审稿机会， （AMO Physics, Physical Chemistry)领域
本人简单情况：
1. 化学物理专业博士， 现第4年postdoc。
2. 16篇第一作者，包括PRL, PCCP, JPCL, NJP
3. 曾经审稿5次，包括NJP , JPB, optics express, physica scripta
跪求如下领域：
(1) Imaging, tomography.
(2) Quantum control, laser control, STIRAP, EIT
(3) Ulfrafast physics
(4) ab initio calculation of potential energy surfaces, conical
intersections
(5) Chemical physics, scattering physics.
可以随时提供简历，文章列表。谢谢各位大牛。
A********[email protected] |
|
m****s
发帖数: 18160 | 40 【 以下文字转载自 EE 讨论区 】
发信人: sizhiyi (sizhiyi), 信区: EE
标 题: Job Opening in Broadcom ---- VLSI/Physical Design Engineer (可以内推）
发信站: BBS 未名空间站 (Sun Apr 21 16:47:59 2013, 美东)
This position requires an understanding of RTL to GDS flows, CMOS device
operation and advanced layout rules.
RESPONSIBILITIES:
• Ownership of design floor planning, synthesis, DFT, place and
route, clock and power distribution, static timing analysis, signal
integrity analysis, physical verification.
• Use circu... 阅读全帖 |
|
F**D
发帖数: 6472 | 41 【 以下文字转载自 Physics 讨论区 】
发信人: Rik (过客无迹--Traceless), 信区: Physics
标 题: 2010 Nobel physics
发信站: BBS 未名空间站 (Tue Oct 5 05:53:23 2010, 美东)
http://nobelprize.org/nobel_prizes/physics/laureates/2010/index.html#
The Nobel Prize in Physics 2010 was awarded jointly to Andre Geim and
Konstantin Novoselov "for groundbreaking experiments regarding the two-
dimensional material graphene"
貌似各路专家又输了，呵呵 |
|
c******a
发帖数: 633 | 42 http://www.antpedia.com/news/93/n-138993.html
这里说：西安交大副教授一国际期刊论文遭重复撤销
http://retractionwatch.wordpress.com/2011/04/21/physics-letters
居然一篇文章能发表两次
Retraction notice to “Nuclear spin magnetic resonance force microscopy
using slice modulation” [Phys. Lett. A 372 (2008) e1]
Physics Letters A, Volume 375, Issue 17, 25 April 2011, Page 1843,
Ren Ren, Jin Xu
REMOVED: Nuclear spin magnetic resonance force microscopy using slice
modulation
Physics Letters A, Volume 372, Issue 44, 27 October 2008, Page 66... 阅读全帖 |
|
f********e
发帖数: 325 | 43 The successful candidate will join a highly talented, dynamic group of
engineers within Power Conversion Business Group to develop state of the art
AC/DC power control and solid state lighting control products. Individual
in this role is responsible for all aspect of digital physical design and
implementation from RTL to GDS design flow covering Place & Route and other
digital backend functions including synthesis, STA, DFT and LEC.
RESPONSIBILITIES:
. Lead the development of all aspects of the ... 阅读全帖 |
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l*******e
发帖数: 1485 | 44 美国爱达荷大学和苏州大学EE合作项目，教基础物理和电子课程。英语授课。
授课地点：江苏苏州大学
学期：5周集中授课，或者可按学期上。
待遇：1. 3000-4000美元/门课
2. 包来回机票
3. 提供公寓和午餐
要求：1. 物理或EE硕士以上
2. 最好是绿卡或美加公民，其他英语国家亦可。
请站内联系，有简历最好。或Email: [email protected]
/* */
Job title: Physics and Electrical Engineering Instructor
University/Location: Suzhou University-University of Idaho (joint program)/
Suzhou, China
Course: Introduction to Physics and Electrical Engineering
Course length/timing: 5 weeks or more, flexible this Fall
Job Description:
The ph... 阅读全帖 |
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s*****r
发帖数: 1032 | 45 http://sf.funcheap.com/howto-night-blend-physics-worldview/
How-To Night”: Physics | Bazaar Cafe
Wednesday, June 8, 2011 - 7:00 pm to 10:00 pm | Cost: FREE
Bazaar Cafe | 5927 California Street, San Francisco CA
Bazaar Cafe in the Richmond presents “How-To Night,” a monthly series
featuring one-night mini-workshops on just about anything.
This Month’s topic: How to Bend Physics Into Your World View
Everyone’s got a worldview, however hidden. No one would get up in the
morning without one.
... 阅读全帖 |
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F**D
发帖数: 6472 | 46 【 以下文字转载自 Physics 讨论区 】
发信人: Rik (过客无迹--Traceless), 信区: Physics
标 题: 2010 Nobel physics
发信站: BBS 未名空间站 (Tue Oct 5 05:53:23 2010, 美东)
http://nobelprize.org/nobel_prizes/physics/laureates/2010/index.html#
The Nobel Prize in Physics 2010 was awarded jointly to Andre Geim and
Konstantin Novoselov "for groundbreaking experiments regarding the two-
dimensional material graphene"
貌似各路专家又输了，呵呵 |
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M********t
发帖数: 5032 | 47 来自主题: Joke版 - 从引力波谈爱因斯坦的幸运 作者：施郁 （复旦大学物理学系） 2016年2月12日是中国农历大年初五。因为所谓“抢财神”的习俗，在零点前后，我当时所在的城市鞭炮声大作。这成了我浏览互联网上铺天盖地的引力波被探测到的新闻发布和原始论文的喜庆伴奏。当时, 我想到爱因斯坦的幸运，便开始写这篇文章。 爱因斯坦曾经感叹牛顿的幸运，而他自己又何尝不幸运至极。他在广义相对论方面的工作就有很多幸运之处。 在创立狭义相对论并为量子论奠基十年以后，居住在柏林的爱因斯坦在个人婚姻纠葛的时期，于1915年创立了广义相对论[1,2,3]，并在次年预言了引力波的存在[4,2]。1918年他得到能量变化率与质量4极矩3阶变化率的关系[5]。美国激光干涉引力波天文台（LIGO）观测到引力波这件事正好成为对广义相对论100周年的纪念。 广义相对论的精髓是物质运动与时空几何的统一和相互影响，在引力场方程上表现为能量和动量与代表时空弯曲程度的量之间的相等。引力使得时空弯曲，需要用非欧几里德几何描述。爱因斯坦创立广义相对论时，物理学家对此还不熟悉，但数学上对于非欧几何已经有深入的研究。在20世纪50年代后的广义相对论和杨-米尔斯场论大发展之前，几何独立于理论物理，取得了长足的进展，可以用杨振宁的诗句“欧高黎嘉陈”概述（指欧拉、高斯、黎曼、嘉当、陈省身）。而爱因斯坦创立广义相对论时，幸运地得到了他的数学家朋友格罗斯曼（M. Grossmann）的帮助，导致他能够最终成功地将物理思想用数学公式表达出来。 创立广义相对论的高潮在于爱因斯坦1915年的一段非常紧张的工作[2,3]。6月他在哥廷根向希尔伯特等人做了一个星期学术报告，介绍他在广义相对论上的工作。10月，爱因斯坦发现自己工作有错误，还听说希尔伯特也发现了他的数学错误并正在取得进展。11月4日开始，按照既定安排，爱因斯坦在普鲁士科学院每周一次介绍广义相对论。经过非常紧张的工作，爱因斯坦终于在11月16日收到希尔伯特的引力场方程之前取得成功，并算出与天文观测相符的水星近日点进动。在11月25日的最后一次报告中，他终于能够写下他的引力场方程。幸运的爱因斯坦！ 1861年，麦克斯韦写下后来以他的名字命名的电磁场方程组，在接下来的几年内他提出了电磁波的存在，并认为司空见惯的光就是一种电磁波。而完备的专著发表于1864年。赫兹在1887年（即麦克斯韦去世8年后）人工产生并探测了无线电波这种电磁波。与之类似，1916年爱因斯坦发表了一篇论文，预言了引力波[2]。爱因斯坦去世60年后的现在，引力波终于被探测到。在4中基本相互作用中，只有电磁作用和万有引力是长程的，所以引力波显然是了解宇宙的一个新窗口。 波是振动的传播。而引力波所传播的是时空度规的振动。度规是一种几何性质。比如平面或者球面上两点之间的间隔都可以用面上的坐标算出，但是公式不一样，这就是因为度规不一样。而在相对论中，有一个与参照系无关的固有时间间隔，它可由时间间隔和空间坐标间隔算出，具体的公式也取决于度规。当物质质量分布发生巨大的变化时，比如高密度天体（如中子星或者黑洞）之间碰撞或者恒星爆炸或坍塌时，会产生引力波。胡斯（R. A. Huse）和泰勒(J. H. Taylor Jr.)于1974年发现的脉冲双星（两个互相旋转的脉冲星）的轨道不断减小，这可以用引力波来解释。他们获得了1993年的诺贝尔物理学奖。理论上认为，宇宙极早期的暴涨会产生原初引力波，从而导致宇宙微波背景辐射在某个尺度上有某种偏振现象。该现象被位于南极的宇宙学河外偏振背景成像（BICEP2）望远镜于2014年观察到，但是后来发现是宇宙尘埃造成的。 LIGO观测到的引力波产生于两个黑洞的并合[6]。大约13亿年前两个黑洞并合产生的引力波于2015年9月14日经过LIGO的两个探测器。幸运的是升级后的LIGO在两天前刚开始运行[7]。这两个探测器实际上是两个巨大的迈克尔孙干涉仪。垂直于干涉仪通过的引力波使得每个干涉仪的4公里长的两臂的长度各有微小的振荡，导致振荡的相位差，从而给出振荡的干涉信号。110年前，狭义相对论解释了迈克尔孙干涉仪测量以太漂移的零结果。现在，迈克尔孙干涉仪又测量到了引力波，检验了广义相对论。确实，现代光学和精密测量技术对引力波探测立下汗马功劳，使得LIGO能够测出小于原子核大小的两臂长度差。历史上引力波探测曾催生量子非破坏性测量的概念，也有原来从事引力波探测的研究人员成为量子测量的专家。 回到爱因斯坦。1933年爱因斯坦移居到美国普林斯顿，引力、统一场论和对量子力学的质疑是他当时关心的问题。爱因斯坦和他的助手罗森（N. Rosen）寻找引力波方程的平面波解，发现这使得度规中不可避免会有奇点（变得无穷大）。现在我们知道这只是表明单一坐标系不足以描述平面引力波，就好比南极和北极的经度无法确定，不是物理上真正的奇点。但是他们当时却以此认为引力波不存在。1936年，他们写了一篇文章投到美国期刊《物理评论（Physical Review）》[8]。这时，爱因斯坦的幸运表现在文章被编辑泰特（John Tate）退回，要求考虑审稿人的意见。审稿意见长达10页，出于专家之手。其实，虽然指出爱因斯坦和罗森的错误，审稿人仍然认为这篇文章有值得赞誉之处，建议经过修改后发表。显然，气愤的爱因斯坦没有研究审稿意见，把文章原封不动地改投到《富兰克林学会会刊（Journal of Franklin Institute）》，文章很快被接受。再次幸运的是，从加州理工学院等地访问回来的同事罗伯森（H. P. Robertson，量子力学教科书上不确定关系的证明源于他）通过爱因斯坦的新助手英菲尔德告诉他们爱因斯坦-罗森工作的错误，并帮助解决了问题。这导致最后发表出来的文章结论完全改变了，成为圆柱状引力波[9]。爱因斯坦幸运地没有否定自己20年前对引力波的预言。近年来Kennefick发现，爱因斯坦本来可以通过阅读《物理评论》的审稿人意见知道自己的错误，因为罗伯森正是泰特为爱因斯坦-罗森文章所找的审稿人。这段历史的详细分析和记述来源于2005年Kennefick发表于《Physics Today》的文章[8]以及刘寄星发表于《物理》的文章[10]（根据美国物理学会期刊主编M. Blume参考Kennefick一篇预印本文章所作的报告，包含Kennefick文中所没有的泰特致爱因斯坦两封信件的复印件）。 几天前出现LIGO探测到引力波的传言时，我便想到爱因斯坦的这件事。 1936年的爱因斯坦幸运地被同行评议制度避免了发表一篇错误的论文，而1905年的爱因斯坦恰恰曾幸运地因为德国《物理学年鉴(Annalen der Physik)》的宽松而得以在该杂志发表5篇改变物理学的论文，特别是看上去离经叛道的狭义相对论和光量子论文。而在爱因斯坦移居普林斯顿后完成的爱因斯坦、罗森和玻多尔斯基（B. Podolsky）质疑量子力学完备性的论文（EPR论文）以及爱因斯坦和罗森关于爱因斯坦-罗森桥（即虫洞）的论文都未经审稿在物理评论发表[8]。后来的历史表明这两篇文章也极为重要，当然是应该发表的。EPR成了爱因斯坦被引用最多的论文。Kennefick认为引力波当时是广义相对论众所周知的预言，所以泰特经过犹豫后将爱因斯坦-罗森证明它不存在的这篇论文送审。而关于爱因斯坦-罗森桥的论文是当时与别人进行的一个争论，所以未经审稿直接发表。那么，质疑当时从一个胜利走向另一个胜利的量子力学的EPR论文为何不经审稿直接发表呢？笔者认为，这是因为EPR承认量子力学技术上的正确性，质疑的只是量子力学的完备性，即是否完全描述客观实在，讨论具有哲学性质。顺便说一下，最近这两篇论文在关于黑洞量子性质的理论讨论中被联系起来。 1917年，爱因斯坦将广义相对论用于宇宙学[11]。如果只有引力而没有斥力，宇宙整体上不能保持静止，所以他在引力场方程中又加了一个代表斥力的宇宙学常数项，虽然他也觉得这个做法很不自然（现在我们知道这也不能真正使宇宙静止）。但是很快人们开始讨论宇宙膨胀，从弗里德曼(A. Friedmann) 、勒梅特（G. Lamaite）和德希特（W. de Sitter）等人的模型研究到哈勃(E. Hubble)的1929年的观测发现。 大爆炸宇宙学的创始人伽莫夫（G. Gamow）在他的自传《我的世界线(My Worldline)》（笔者本科生时代读到这本书后，一直记忆犹新，所以将世界线用于本人的博客名称中）中告诉我们，爱因斯坦曾说过宇宙学常数是他一生最大的错误[12]。所以1936年爱因斯坦-罗森关于引力波的文章所用的引力场方程中，已经没有宇宙学常数。但是在当代，作为联系宇宙学与微观的量子场论的一个桥梁，宇宙学常数成了一个重要的研究课题。近年来宇宙加速膨胀和暗能量的发现更使得宇宙学常数的概念得到复活。这又是爱因斯坦的幸运，虽然他失去了预言宇宙膨胀的机会。 最后，用笔者与杨振宁先生以前的一段讨论结束本文。 施：您认为爱因斯坦(而非麦克斯韦)是仅次于牛顿的伟大物理学家。我也这样认为。您能不能简单说说您的理由？ 杨：麦克斯韦是一位伟大的物理学家，他对人类的贡献无法可以被夸大。但是从对物理学基本概念的贡献的角度来说，他不能与爱因斯坦相比。爱因斯坦（1）改变了我们对于时间和空间的理解，从而给理论物理带来对称性的概念和对称性支配相互作用的思想，（2）创造了引力的几何概念，（3）帮助创立了量子力学。 感谢杨振宁先生的交流和阅读本文。 参考文献: [1] A. Einstein,Sitzungsber. K. Preuss. Akad. Wiss. (1915) 844. [2] A. Pais, Subtle is the Lord, OxfordUniversity Press, New York (1982). [3] W. Isaacson, Einstein:His Life and Universe. Simon & Schuster, New York (2007). [4] A. Einstein,Sitzungsber. K. Preuss. Akad. Wiss. (1916) 688. [5] A. Einstein,Sitzungsber. K. Preuss. Akad. Wiss. (1918) 154. [6] B. P. Abbott et al. (LIGO Scientific Collaboration and the Virgo Collaboration), Phys.Rev. Lett. 116 (2016) 061102. [7] E. Berti, Physics9 (2016) 17. [8] D. Kennefick,Physics Today, September 2005, p. 43. 这篇文章后来吸收进该作者的书《Traveling at the speed of thought》. [9] A. Einsteinand N. Rosen, J. Franklin Institute 223(1937) 43. [10] 刘寄星，物理，34, 2005, p.487. [11] A. Einstein, Sitzungsber.K. Preuss. Akad. Wiss. (1917) 142. [12] G. Gamow, 《My Worldline》, Viking, New York, 1977. (XYS20160218) 从引力波谈爱因斯坦的幸运
作者：施郁 （复旦大学物理学系）
2016年2月12日是中国农历大年初五。因为所谓“抢财神”的习俗，在零点前后，
我当时所在的城市鞭炮声大作。这成了我浏览互联网上铺天盖地的引力波被探测到的新
闻发布和原始论文的喜庆伴奏。当时, 我想到爱因斯坦的幸运，便开始写这篇文章。
爱因斯坦曾经感叹牛顿的幸运，而他自己又何尝不幸运至极。他在广义相对论方面
的工作就有很多幸运之处。
在创立狭义相对论并为量子论奠基十年以后，居住在柏林的爱因斯坦在个人婚姻纠
葛的时期，于1915年创立了广义相对论[1,2,3]，并在次年预言了引力波的存在[4,2]。
1918年他得到能量变化率与质量4极矩3阶变化率的关系[5]。美国激光干涉引力波天文
台（LIGO）观测到引力波这件事正好成为对广义相对论100周年的纪念。
广义相对论的精髓是物质运动与时空几何的统一和相互影响，在引力场方程上表现
为能量和动量与代表时空弯曲程度的量之间的相等。引力使得时空弯曲，需要用非欧几
里德几何描述。爱因斯坦创立广义相对论时，物理学家对此还不熟悉，但数学上对于非
欧几何已经有深入的研究。在20世纪50年代后的... 阅读全帖 |
|
j**w
发帖数: 43 | 48 【 以下文字转载自 Physics 讨论区 】
发信人: jyzw (屁孩), 信区: Physics
标 题: 哪位朋友了解medical physics? 从事该职业对身体有害吗？
关键字: medical physics
发信站: BBS 未名空间站 (Sun Apr 24 04:35:50 2011, 美东)
本人现在想转行读一个medical physics的学位, 侧重medical imaging的，但是对这个
职业所从事的工作以及以后的就业
前景不是很了解，另外，最关心的一个问题是，会不会接触到放射性物质对身体不好？
希望在这个领域工作的朋友或者是了
解这个行业的朋友给些建议。谢谢！ |
|
s*****r
发帖数: 847 | 49 标注一下，我是转贴而已哦
有兴趣的跟flyinmeteor联系哈
【 以下文字转载自 JobHunting 讨论区 】
发信人: flyinmeteor (raindance), 信区: JobHunting
标 题: netlogic opening - physical design engineer in CPU group
发信站: BBS 未名空间站 (Thu Oct 21 02:53:18 2010, 美东)
今天manager突然说可以找fresh grad. 如果觉得fit的话, 跟我联系
This position requires an understanding of RTL to GDS flows, CMOS device
operation and advanced layout rules.
Responsibilities:
Ownership of design floor planning, synthesis, DFT, place and route,
clock and power distribution, static timing an... 阅读全帖 |
|
