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全部话题 - 话题: refractive
1 2 3 4 5 下页 末页 (共5页)
l**********g
发帖数: 55
1
Given the viscosities and refractive indices of two miscible solvents, and
the volume ratio of the two solvents, how can I calculate the viscosity and
RI of the mixed solvent?
thanks!!
z**h
发帖数: 224
2
【 以下文字转载自 Chemistry 讨论区,原文如下 】
发信人: zzwh (大音希声,大象无形), 信区: Chemistry
标 题: 请问哪里可以查到高分子的refractive index?
发信站: The unknown SPACE (Wed Aug 14 12:54:31 2002) WWW-POST
Thanks
l**********g
发帖数: 55
3
来自主题: Macromolecules版 - questions about viscosity and refractive index
Given the viscosities and refractive indices of two miscible solvents, and
the volume ratio of the two solvents, how can I calculate the viscosity and
RI of the mixed solvent?
thanks!!
h***o
发帖数: 350
4
How do we calculate the dielectric constant e' and e", and refractive index
n from transmittance and reflectance data? Is there any software that we can
use?
Thanks a lot for help!
c******r
发帖数: 3778
5
来自主题: Parenting版 - 怎么预防孩子的近视眼
OVERNIGHT CORNEAL RESHAPING (OCR) — Overnight corneal reshaping (OCR) is
the process of wearing a specially designed, rigid gas-permeable (RGP)
contact lens while asleep to temporarily effect a change in the corneal
curvature resulting in clear vision during waking hours without correction.
This technique is also referred to as:
●Corneal refractive therapy (CRT)
●Overnight corneal reshaping (OCR)
●Vision shaping treatment (VST)
●Orthokeratology (Ortho-K)
The process — After wearing OCR lenses, t... 阅读全帖
l**********1
发帖数: 5204
6
来自主题: Biology版 - 求助:有关共聚焦的问题。
Mounting the specimen
Selection of a mounting medium should
take into account the type of microscope objective
that will be used to observe the specimen
(see section on Microscope objectives).
In order for an objective to perform optimally,
the mounting medium should have the same
refractive index (RI) as the objective immersion
medium. Mismatches in the refractive indices
produce spherical aberration leading to
loss of light at the detector, as well as decreased
z-axis resolution and incorrect ... 阅读全帖
D*L
发帖数: 296
7
来自主题: Medicine版 - 求助
去年11月第三次在同一眼科医生诊所仅仅验了个光,事先也问诊所保险cover吗 ?回答
cover。但现在寄来账单85美元,今天打电话知道诊所把验光叫Refraction。
我看了保险公司的通知,诊所charge保险公司220美元,保险公司只付45美元给诊所。
今天打电话给保险公司说 验光100%报销的。Refraction不报销。
在他家诊所眼光前两次保险公司都报了。
哪位知道验光和Refraction有何区别?这个诊所是不是想着法子骗钱?
S********0
发帖数: 672
8
解释得太详尽了!!
刚又打电话给Aetna,她用clinic的service code查了一下,说eye exam and
refraction都能cover,嘻嘻,终于给了一个肯定的答案。但诊所也很奇怪都没收我
copay.
保险公司的业务员也太不专业了,就这同一个问题,打电话给Aetna好多次,回答分别
是:
不cover eye exam
cover eye exam,但不管refraction(语气相当肯定)
不能确定管不管refraction,要等诊所bill过来之后审核一下再说
还有N次让等待查询,听着听着音乐就断线了
今天终于有一个人用service code查过之后说都cover
关于有没有copay,copay多少,以及哪个店哪个诊所是他们的in-network provider,回
答也都千差万别,真是头大。

exams,
contact
.
insurance
),
b*******t
发帖数: 33714
9
来自主题: PhotoGear版 - 好奇弱问
这一段有点意思:
What are the advantages of the PGM aspherical lens compared with the
precision-ground aspherical lens and the hybrid lens?
Sakuma:
Since plastic is used in the hybrid lens, it is subject to environmental
changes such as temperature and humidity fluctuations. However, such changes
have a negligible affect on molded glass lenses. As for a precision-ground
lens, the process of directly grinding the glass takes time and is therefore
not suited for mass production. Since a molded glass lens ... 阅读全帖
T*******y
发帖数: 6523
10
来自主题: Wisdom版 - 眼见为实
"插根筷子到杯子里,你见到的是断的"
This is still what's real. It's real to show the refraction. Given our
knowledge of refraction, what we see is not a broken chopstick, but a
straight chopstick that shows refraction.

却是真实的。他说非也,插根筷子到杯子里,你见到的是断的。

发帖数: 1
11
来自主题: Military版 - 12月10日 可能的历史
Yarmouth Port, Massachusetts
From Wikipedia, the free encyclopedia
Yarmouth Port, Massachusetts
Census-designated place
Boardwalk at Bass Hole
Location in Barnstable County and the state ofMassachusetts.
Coordinates: 41°42′17″N 70°13′15″WCoordinates: 41°42′17″N 70°13′
15″W
Country United States
State Massachusetts
County Barnstable
Town Yarmouth
Area
• Total 6.47 sq mi (16.76 km2)
• Land 6.04 sq mi (15.65 km2)
• Water 0.43 sq mi (1.11 km2)
Elevation 52 f... 阅读全帖

发帖数: 1
12
来自主题: Military版 - 12月25日 圣诞节快乐!
在网上发现了一个圣诞节商店,商店的建筑很有特色,而且遍布全美国,大概有70多个
店铺,以后大家买圣诞节用品可以去那里,似乎各州都有。我们这里和麻州的地址是:
CHRISTMAS TREE SHOP AUGUSTA, GA, 239 ROBERT C. DANIEL JR. PARKWAY,
AUGUSTA EXCHANGE, AUGUSTA, GA 30909, 706.738.0570, CHRISTMAS TREE SHOP
, MAGNOLIA PARK, 1117 WOODRUFF ROAD, GREENVILLE, SC 29607. 864. 297.
3667
CHRISTMAS TREE SHOPS NATICK, 1298 WORCESTER ST. ROUTE 9, SHERWOOD
PLAZA, NATICK, MA 01760, 508.655.9800
CHRISTMAS TREE SHOPS SOMERVILLE, 177 MIDDLESEX AVENUE, ASSEMBLY SQUARE
... 阅读全帖
v*****s
发帖数: 20290
13
来自主题: Military2版 - 这个ABL搞得不错啊。
self-focus,因为refractive index和influence相关,高斯波束中心部分感到的
refractive index大于边缘部分,实际上形成了一个透镜,导致光束自聚焦。这个效应
是很强很有效的,如果不加处理的话,光束很快就会自聚焦,然后在焦点处因为电离空
气损失掉大部分能量以后散焦。
这个问题解决起来从理论上讲不难,可以先散焦,也可以用pi-shaper把高斯波束的中
心抹平。但是实践上要准确预测几百公里之内的空气二阶甚至三阶非线性常数,作出补
偿还是相当困难的。
A*****a
发帖数: 52743
14
来自主题: Medicine版 - 求助
eye exam不是验光,虽然可以包括验光。refraction test是指以配眼镜为目的验光。
eye exam更多的是指检查眼睛有什么病,是否健康。这个一般的保险都cover, 但不是
所有的保险都cover refraction test.
d**y
发帖数: 32
15
来自主题: Immigration版 - 审稿 (EE方向)
有两篇,请有兴趣且能审稿的站内信联系。
1:题目:Modeling and simulation an anti-reflective coating of ZnO and ZnS
for silicon solar cells using Silvaco software
摘要
In this paper simulated single layer anti-reflective coating on silicon
solar cell that based on the refractive index limit of silicon dioxide (SiO2
), zinc oxide (ZnO) and zinc sulphide (ZnS)
are presented. Two simulations of ZnO and ZnS coating were simulated to
compare with SiO2
anti-reflective coating on silicon solar cell surface. These simulations
car... 阅读全帖
m******j
发帖数: 5079
16
来自主题: SanDiego版 - 求推荐个周六工作的眼科的医生
Westview眼科主页上的一点儿介绍,都是术语,不知道对楼主有没有用。
We will fulfill all your visual needs including Eye glasses, Contact lenses,
Paragon CRT (Corneal Refractive Therapy), Ocular disease management and co
-management for Refractive surgery and Cataract surgery.
希望哪位用过她们的,可以出来说两句。
t*****k
发帖数: 390
17
来自主题: SanFrancisco版 - 求推荐湾区 靠谱的lasik眼睛手术机构
不知道就不要瞎扯
http://eyelaser.stanford.edu/fees_financing/fees.html
Stanford University has always been at the heart...
of the most advanced medical thinking.
Refractive Fee Schedule
Initial Evaluation: No charge
Full exam (includes corneal mapping, measurements, and dilated exam)
$293 (deducted from procedure fee)
REFRACTIVE PROCEDURE AND COST PER EYE:
Custom Wavefront LASIK with Intralase
$2,950
Custom Wavefront PRK
$2,950
Custom Wavefront LASEK
$2,950
Conductive Keratoplasty (CK)
$2,950
Custom Con... 阅读全帖
g*********r
发帖数: 1443
18
来自主题: Fishing版 - 水深与颜色
今天学了点新知识,和大家分享:
Reflection, Refraction, and Color
The uppermost, sunlit layer of the ocean where 70 percent of the entire
amount of photosynthesis in the world takes place is called the euphotic
zone. It generally extends to a depth of 100 meters (330 feet). Below this
is the disphotic zone, between 100 and 1,000 meters (330 and 3,300 feet)
deep, which is dimly lit. Some animals are able to survive here, but no
plants. Although the amount of light is measurable at this range of depths,
there is ... 阅读全帖
y*b
发帖数: 3190
19
来自主题: PhotoGear版 - Sigma 50-100mm f/1.8 DC HSM Art On the Way
"Sigma will announce a 50-100mm f/1.8 DC HSM Art lens next week ahead of CP+
. This is another unique fast zoom lens coming from Sigma. This one is for
crop sensor cameras.
Sigma 50-100mm f/1.8 DC HSM Art Specifications (Google Translated)
Lens construction: 15 group 21 sheets – three FLD glass. One SLD glass. One
high-refractive-index, high-dispersion glass. High refractive index SLD
glass three
Filter Size: 82mm
Minimum shooting distance: 95cm
Maximum magnification of 1: 6.7
Total length: 170.... 阅读全帖
z******s
发帖数: 61
20
激光手术矫正近视:一场世纪医疗骗局?
http://songshuhui.net/archives/50753
大约8年前,我就在网上不同地方看到过有关“近视手术致盲”、“近视手术是骗局”
等等的传闻,所幸本人视力尚佳,并未特别留意。后来有若干大学同学去做 LASIK手术
摘掉了眼镜,现已过去数年,仿佛也无噩耗传来。最近上网一瞧,才发现虽时过境迁,
关于激光近视手术的传言却并未消弭,反而越传越激烈,越传越惊悚。果壳网小组中转
载有“医生”现身说法的文章,文中称:
他们(指眼科医生,笔者注)明知道这一手术(指激光矫正近视手术,笔者注)的危险
性,却冒天下之大不韪,欺瞒广大患者,把广大患者的眼睛当作试验品,请问你们还是
人吗?医生被称做是白医(原文如此,笔者注)天使,你们的职责是救人,而不是为了
瓜分一个市场而去把一项不成熟的技术用来害人!实行了LASIK后所产生的圆锥角膜目
前在医学上被认为是绝症,最后只能用角膜移植来解决问题!每一例手术能为你们带来
上千元的利润,而为了这些利润,你们竟然把广大的患者当实验品,隐瞒手术风险,而
使广大的患者冒着在若干年后要成为盲人或准盲人的风险,你们心中... 阅读全帖
z******s
发帖数: 61
21
http://songshuhui.net/archives/50753
大约8年前,我就在网上不同地方看到过有关“近视手术致盲”、“近视手术是骗局”
等等的传闻,所幸本人视力尚佳,并未特别留意。后来有若干大学同学去做 LASIK手术
摘掉了眼镜,现已过去数年,仿佛也无噩耗传来。最近上网一瞧,才发现虽时过境迁,
关于激光近视手术的传言却并未消弭,反而越传越激烈,越传越惊悚。果壳网小组中转
载有“医生”现身说法的文章,文中称:
他们(指眼科医生,笔者注)明知道这一手术(指激光矫正近视手术,笔者注)的危险
性,却冒天下之大不韪,欺瞒广大患者,把广大患者的眼睛当作试验品,请问你们还是
人吗?医生被称做是白医(原文如此,笔者注)天使,你们的职责是救人,而不是为了
瓜分一个市场而去把一项不成熟的技术用来害人!实行了LASIK后所产生的圆锥角膜目
前在医学上被认为是绝症,最后只能用角膜移植来解决问题!每一例手术能为你们带来
上千元的利润,而为了这些利润,你们竟然把广大的患者当实验品,隐瞒手术风险,而
使广大的患者冒着在若干年后要成为盲人或准盲人的风险,你们心中何安!在几百万人
的眼中埋下一颗定时B... 阅读全帖
s*****j
发帖数: 6435
22
问题是你根本没有意识到 dry lens NA 是不可能超过 1 的. 我提醒了你一下, 你还
是没有意识到. 这根本不是有没有记错的问题, 而是你对 NA 缺乏基本的理解.
"你们说的那个n是airy disk size.", n 就是 refractive index, 怎么会变成airy
disk size了?
"你一开始问我说为什么用油,又不是问我直接问我这个n 的问题。" 看来你连这个 n
就是指的油的 refractive index 都没看懂.
x*******i
发帖数: 32
23
来自主题: Chemistry版 - 请教一个raman的问题 包子答谢
You are using a home-made Raman instrument right? For confocal Raman
instruments from major vendors, you do not need to consider how to measure
the distance of the focus movement, because it is controlled by stage with
spatial resolution of 100 nm (normal type) or 10 nm (advanced type).
I need some time to think about how to answer your question. But confocal
Raman experiment may not be able to determine the thickness by the technique
itself on the well-known sample, because the refractive index... 阅读全帖
q****i
发帖数: 6923
24
来自主题: Chemistry版 - paper help bao zi thanks
Utilization of Alkoxysilyl Groups for the Creation of Structurally
Controlled Siloxane-Based Nanomaterials
Kazuyuki Kuroda, Atsushi Shimojima, Kazufumi Kawahara, Ryutaro Wakabayashi,
Yasuhiro Tamura, Yusuke Asakura, and Masaki Kitahara
Chem. Mater., 2014, 26 (1), pp 211–220
Preparation and Formation Mechanism of Silica Microcapsules (Hollow Sphere)
by Water/Oil/Water Interfacial Reaction
Masahiro Fujiwara, Kumi Shiokawa, Yuko Tanaka, and Yoshiko Nakahara
Chem. Mater., 2004, 16 (25), pp 5420–5426... 阅读全帖
b**s
发帖数: 589
25
来自主题: Macromolecules版 - 转信一封,关于聚合物颗粒
Which is good Refractive Index?
I used to use laser to measure the PE particle size, It's fine.

to
fluidization,
800-2000kg
can
能太
,要大于50微米吧,找了半天没有结果。现在在考虑是否可以用polymer颗粒,因为polym
是透
或半透明,或白色的,因为要用激光测量技术,要求颗粒具备一定的光学性能refractive
问题
,谢
w********h
发帖数: 12367
26
来自主题: Macromolecules版 - [转载] polymer 一问
【 以下文字转载自 Science 讨论区,原文如下 】
发信人: StanStone (想法飘忽), 信区: Science
标 题: polymer 一问
发信站: Unknown Space - 未名空间 (Tue Mar 29 21:20:05 2005) WWW-POST
真是隔行如隔山,今天看文章时看到大家说polymer film (e.g.
polystyrene)的refractive index 的时候都要说 film thickness。难道polymer 的折光
率和film的厚度有关?
那一般说的ploystyrene的refractive index在589 nm 是 1.59 是怎么回事儿啊?
l*****o
发帖数: 82
27
来自主题: Science版 - Which material has lower n<1.45?
【 以下文字转载自 Physics 讨论区 】
发信人: lorenzo (想当流氓...没天分:(), 信区: Physics
标 题: Which material has lower n<1.45?
发信站: BBS 未名空间站 (Fri Jan 12 16:35:58 2007), 转信
I am looking for some materials with refractive index smaller
than SiO2 (1.47 at 1.2 um). Anyone has suggestion?
I know some optical fiber has cladding layer whose refractive
index is around 1.2, but can not find any information on that.
Is there anyone know it?
Thanks a lot!
a*i
发帖数: 1652
28
I just saw a journal paper titled "Posterior chamber collagen copolymer
phakic intraocular lenses to correct myopia: Five-year follow-up" ( Journal
of Cataract & Refractive Surgery Volume 37, Issue 5, May 2011, Pages 873-880
).
At present, the Visian Implantable Collamer Lens pIOL (Staar Surgical Co.)
is the only posterior chamber pIOL approved by the United States Food and
Drug Administration (FDA) for the treatment of moderate to severe myopia.
This pIOL is of a foldable collagen copolymer mat... 阅读全帖
o*******t
发帖数: 167
29
来自主题: Medicalpractice版 - Help - Ophthalmologist or Optometrist please!
Hi This is the result from vision examination. Could anyone help explain it
? I do not understand the numbers. Thanks!
ORIENTATION, MOOD AND AFFECT: Alert & oriented x3
RIGHT EYE LEFT EYE
UNCORRECTED VA 20/30+2 20/30-2
MANIFEST REFRACTION NO IMPROVEMENT SPHER NO IMPROVEMENT SPHER
AUTO REFRACTION +0.50 -0.50 x 070 +0.50 -1.00 x 177
KERATOMETRY 38.50/38.75 @ 046 39.75/40.25 @ 066
PRESSURE METH... 阅读全帖
C********g
发帖数: 9656
30
转基因玉米的神话
http://www.rainbowplan.org/bbs/topic.php?topic=107689
送交者: 六指 于 2010-03-25 12:25:45
转基因现在是网上的热门话题,这其中自然少不了在转基因食品上市前就已试吃过的方
老师的身影。学习完他的科普熊文“转基因玉米更有益健康”后,再做延伸阅读,稍加
搜索就看到一篇2004年的洋文”Bt corn reduces serious birth defects”【http://westernfarmpress.com/news/10-27-04-Bt-corn-birth-defects/ 】。方老师的文章基本观点,数据,内容编排都和这篇雷同,不少句子更是原文照译。这进一步验证了一条世人皆知的谣言“方老师写的东西,也有成段的引文献或者直接是英语文章翻过来的”。方老师打开门辟谣,关上门立马就造谣,此等大无畏的勇气和人格力量实在是让我等折服。
方老师涉嫌抄袭早已不是什么新鲜话题,这里说说转基因。这篇洋文的两位作者实际上
是做”二阶科学传播“,主要介绍了当年在“营养学杂志”发表的一篇综述【http://jn... 阅读全帖
a****t
发帖数: 11
31
来自主题: Military版 - 求助 (转载)
【 以下文字转载自 ebiz 讨论区 】
发信人: antist (mayi), 信区: ebiz
标 题: 求助 (转载)
发信站: BBS 未名空间站 (Fri May 21 21:17:20 2010, 美东)
发信人: antist (mayi), 信区: Missouri
标 题: 求助
发信站: BBS 未名空间站 (Fri May 21 11:23:58 2010, 美东)
有哪位大佬是University of Missouri的?我想找一份硕士论文
Segelstein, D.J. 1981. The complex refractive index of water. M.S. Thesis
能否帮忙在学校图书馆下载啊?多谢了。
R****a
发帖数: 6858
32
来自主题: Military版 - 感觉激光武器不实用呀
The refractive index variation in air is acutually fetal to laser weapon. If
only you shoot a liquid hydrogen bomb and make it explode to generate a lot
of steam, no laser can pass the area covered by the steam. All laser energy
will be reflected, scattered and absorbed.
It is usually over $1000 for a good lens (e.g. aluminum or coated glass, R >
95%) and millions of dollars for a lens array. And it is still not enough
to protect you if your enemy uses pulsed laser, because the strong light
puls
b*******9
发帖数: 644
33
来自主题: Military版 - The sun rises two days early in Greenland
"It is far more likely to be due to the increased density of the atmosphere
causing more refraction than normal. The atmosphere has 'shrunk'
considerably due to the 'quiet sun'."
or
"I would be more inclined to believe that the earths axis could have tilted
a little rather than the horizon has melted!!"
L*******o
发帖数: 895
34
1. Isaac Newton - English. Quantified and Qualified laws of motion and
gravity. Invented the reflecting telescope. Explained the concept of light
dispersion and co-invented the Calculus.
2. Albert Einstein - German/Swiss/American - Developed Theories of Special
and General Relativity. Described Brownian Motion. Nobel Prize winner for
his work on the photoelectric effect. Showed mass-energy equivalence.
3. Galileo Galilei - Italian - Discovered the law of Uniformly accelerated
motion. Improved on... 阅读全帖
s********i
发帖数: 145
35
来自主题: Military版 - 碰到太上进的同事怎么办
在这里损楼主的肯定都不是干程序员的,至少不是合格的程序员。做软件系统一个最大
的原则就是:If it does not break, don't fix it. 你们根本不知道在software
engineer领域,有多少问题是由于不成熟的优化造成的。那种动不动就想把整个系统重
新设计,重头开始写的,是最Naive的程序员。软件系统一般都是有很多瑕疵的,但只
要满足设计要求,就是好系统,特别是那种运行了N多年的,不管代码你觉得有多ugly,
但是经过这么多年得不断测试,证明了是成熟稳定的,who care if it have defects.
建议楼主一定要向你的上司强调贸然的做refraction 和 optimization 的风险,不是
自己草包,实在是不符合软件工程的原则。不仅没有必要,浪费资源,而且风险很大,
很有可能得不偿失。我不相信你们公司没人懂这点道理。
h******t
发帖数: 872
36
来自主题: Military版 - Eve of Disaster. a well written article
Eve of Disaster
Why 2013 eerily looks like the world of 1913, on the cusp of the Great War.
BY CHARLES EMMERSON
The leading power of the age is in relative decline, beset by political
crisis at home and by steadily eroding economic prowess. Rising powers are
jostling for position in the four corners of the world, some seeking a new
place for themselves within the current global order, others questioning its
very legitimacy. Democracy and despotism are locked in uneasy competition.
A world econom... 阅读全帖
T**********e
发帖数: 29576
37
来自主题: Military版 - 轮子之后的50项最伟大发明
The 50 Greatest Breakthroughs Since the Wheel
http://www.theatlantic.com/magazine/archive/2013/11/innovations
1. The printing press, 1430s
The printing press was nominated by 10 of our 12 panelists, five of whom
ranked it in their top three. Dyson described its invention as the turning
point at which “knowledge began freely replicating and quickly assumed a
life of its own.”
2. Electricity, late 19th century
And then there was light—and Nos. 4, 9, 16, 24, 28, 44, 45, and most of the
rest of mode... 阅读全帖
g***j
发帖数: 40861
38
【 以下文字转载自 WaterWorld 讨论区 】
发信人: zfax (xafz), 信区: WaterWorld
标 题: 不要错过今晚罕见的血月食 (Rare 'Blood Moon' Lunar Eclipse
发信站: BBS 未名空间站 (Mon Apr 14 14:43:55 2014, 美东)
今天晚上有月食,还是血红色的。
今晚不看,下次就是2032年乐。。。
不想整晚不睡的可以三点起来看到4点。
Don't Miss Rare 'Blood Moon' Lunar Eclipse Tonight
http://abcnews.go.com/Technology/miss-rare-blood-moon-lunar-ecl
urn your gaze to the stars tonight for an eerie and spectacular view of the
“blood moon.” At 12:53 a.m. ET, the Earth will begin to position itself
between the sun and the m... 阅读全帖
k**1
发帖数: 1955
39
Index is difficult to measure. However, if you know radius on both sides of
the lens and center thickness, you can use ZEMAX to simulate the edge
thickness of the certain size of glasses and its index of refraction. That
will be very accurate
If you have astigmatism, it will be more difficult.
A senior optical engineer.
“ high index的主要目的是看的更清楚,而不是更薄。” this is a wrong
statement, this person cannot work in that shop.
x****6
发帖数: 4339
40
来自主题: Military版 - Penrose算不算
“his research into refractive indices and creation of the first practical "
Invisibility Cloak"”
怎们看着像物理的旁门左道?
c****a
发帖数: 3173
41
来自主题: USANews版 - 这个是鼓动么?太邪恶了
Dear MoveOn members,
All eyes are on Baltimore. Massive protests are ongoing in memory of Freddie
Gray, a 25-year old man who died of spinal injuries he sustained while in
police custody.1 Media coverage has focused largely on episodes of violence
in the streets—often missing essential pieces of the rapidly unfolding
story.2
In this moment of crisis, we can learn something from Ferguson: the most
important voices to listen to right now are local ones. And the most
important images and videos wil... 阅读全帖
S*********g
发帖数: 24893
42
【 以下文字转载自 Stock 讨论区 】
发信人: StephenKing (金博士), 信区: Stock
标 题: 向民族英雄包鹏程致敬!为民族英雄包鹏程欢呼!
发信站: BBS 未名空间站 (Wed Jun 3 20:54:21 2015, 美东)
Pengcheng Bao, Graduate Student
Pengcheng is a second year graduate student. He obtained his B.S. in physics
from Nankai Univeristy in China.
Project: Development of methodology for realistic modeling of heterogeneous
catalytic interfaces.
Tel: 310-206-3215
Email: [email protected]
/* */
PENGCHENG BAO
Education
and Awards
2009 –
NANKAI UNIVERSITY TIANJIN, CHINA... 阅读全帖
H*****u
发帖数: 1766
43
high refractive index的可视角度大
m****f
发帖数: 5
44
Prof. Malik Rakhmanov at the University of Texas at Brownsville is looking
for a postdoctoral researcher to work in optics and nanophotonics.
Rakhmanov's research interests include laser resonators, precision phase
measurements, photonics crystals, nanocavities, and negative-index-of-
refraction materials. He is looking for a postdoc to work in various areas
of laser interferometry, including optics and lasers for NASA LISA mission,
silicon nanophotonics, and photonic crystals. Please contact Pr
d*******l
发帖数: 2567
45
杜克这个metamaterial到底做的任何?就是negative index of refraction
了?

长。
l******d
发帖数: 73
46
来自主题: Faculty版 - 求paper一篇
X. Zhao, X. Zhang, P. Cao, L. Cheng, Q. Shao, W. Kong, et al., "Tunable
phase shifter with zero refractive index photonic crystal," Optik -
International Journal for Light and Electron Optics, vol. 124, pp. 2751-2753
, 9// 2013.
Please email to: m*****[email protected], thank you :)
R*********e
发帖数: 73
47
得到博士offer的本科生简历(挂网公开的,应该可以讨论把)在下面,先只请教下打动
发考题们给了博士offer的原因,别的不八卦:)哈哈
照说本科生得让发考题们认为极其有科研的潜质,才能打败无数硕士生,发考题们才
会直接给本科生offer直攻博士;
看这份简历,我的感觉是
1.本科成绩好,会读书
2.参加了很多国内老师的项目,参加了一些海外老师的暑期短期项目,有些学术锻炼和想
法,但无明显成果,可能人缘好,会来事;但不排除夸大自己作用的可能
3.得了一些奖学金,国内高校基本上成绩好加积极参加学校各项活动,对老师会来事,自
然就能得.
3.英语写的好
4.积极参加各种活动,精力充沛,勤奋,把自己的时间,安排的满满当当的,有废寝忘食的
倾向.
5.非常有计划性和目的性,经过几年奋斗,作为本科学生,已经达到面面聚到的无短板程
度.
作为本科生,这份简历无疑是优秀的;但是却无法直接得出极其有科研的潜质的结论;相
反无数硕士生申请攻博士,由于年龄大一些和工作经历,也许本科成绩绩点低一些,得的
奖学金项目少一些,但是有实践经验,多数还会有1-2篇海外(尽管可能级别和影响不高)
期刊发表的... 阅读全帖

发帖数: 1
48
Gemstone collecting is one of JTV's favorite pastimes. During my years
working in the gem industry, I have received a lot of questions about this
hobby from both enthusiasts and non-enthusiasts. Common inquiries include:
Why do people collect gems? How do I get started? And what should I collect?
This article will focus on the first question Why do people collect
gemstones?Why Collect Gemstones?Well, first and foremost, gemstones are the
original collectible.
What do I mean by this? Think back t... 阅读全帖
s*******i
发帖数: 1063
49

~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~ here the scattered light is due to difference in refractive
index.
You can try, even with 150 nm emulsions, you will still see white, but it is
much smaller than wavelength of visible light.
m********u
发帖数: 3942
50
来自主题: JobHunting版 - Optics Engineer
地点在加州 有兴趣的同学站内或者发邮件联系 [email protected]/* */
Job Description
This position is for an optical engineer working for Client's next-
generation optical technology. The optical engineer will be responsible for
investigation/development of the key optical component technology to enable
the Augmented Reality/Mixed Reality experience.
Responsibilities
Perform development and research of optical components, including
investigation of the cutting-edge technology and define the technical path
for Go... 阅读全帖
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