m***h
发帖数: 23691 | 1 打几折的?
Joule的出厂价就很便宜，不知道为什么
你的gotback多长 |
|
k***z
发帖数: 3522 | 2 joule定价580，也不算便宜了吧。我试过一次，还挺喜欢的。black diamond ski普遍
偏硬，不过这幅还行，可能因为是women的。
我这套一共469。gotback是153 cm。 |
|
|
a******o
发帖数: 16625 | 4 【 以下文字转载自 Military 讨论区 】
发信人: LindaLiao (梅影清吟), 信区: Military
标 题: 世界历史上最有成就的五十名物理学家。
发信站: BBS 未名空间站 (Sun Apr 8 17:18:35 2012, 美东)
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 ef... 阅读全帖 |
|
t***n
发帖数: 546 | 5 难道不是Joule–Thomson effect吗？ |
|
H********g
发帖数: 43926 | 6 斯坦的公式
E=mcc
里面为啥没有一个常数？为啥不是E=kmcc？
换句话说，为啥1千克的物质湮灭，就肯定产生1kg·299792458m/s·299792458m/s=
9e16 joule的能量？为啥没有一个修正的常数？ |
|
S*******T
发帖数: 5156 | 7 “不用清，根据东厂早慢熊斯基的调查，临高现在没什么居民。明末的时候，1622年到
1629年，连刮了三场怪风，当地本来就没多少人口，从此就人烟灭绝了，所以称为临高
三风。”
“怎么会有三场怪风？”
“我估计是别的时空的穿越者，超光速穿越的时候带的物资质量太大，能量等于光
速的平方乘以质量，如果一艘四千吨的货轮，不管他用什么方式穿越，所引爆的能量都
相当于一颗新地岛氢弹。连续三颗新地岛氢弹，短短八年内打在临高这一个点上，还会
有人烟么。”
每吨TNT爆炸当量相等于4.2 Giga 焦耳 (10的9次方）， 而1公斤的物质完全湮灭产生
的能量是9 x 10的16次方 Joules。这么算起来，4000吨的船穿越释放的能量相当于大
概171000个五千万吨核弹爆炸。不要说临高或者海南岛，东亚板块都要陆沉了吧 |
|
J*****3
发帖数: 4298 | 8 Creationist Wisdom #234: Who’s the Moron?
Posted on 21-March-2012 | 11 Comments
We occasionally post about columns written by Ben Bova, a good science
fiction writer, when he discusses The Controversy between evolution and
creationism. He lives in Naples Florida, and sometimes writes for his local
paper, the Naples Daily News: The last time was here: Ben Bova: The Search
For Life’s Origins.
Bova recently wrote The ignorant and their leaders are marching endlessly —
to oblivion , but we didn’t po... 阅读全帖 |
|
j*******7
发帖数: 6300 | 9 http://cclw.net/gospel/explore/kxyxy/index.html
Ⅱ. 圣经能提供科学两个基本假设的根据
(见 Del Ratzsch所著之书第八章)圣经上说神创造整个自然宇宙：创世纪 1： 1提
到「起初神创造天地」，所以万物是「真实」存在的，不只是个幻觉，圣经里的神做事
很有条理，所以他所创造的东西应该是具「一致性」的。
在圣经创世记 1:26,27提到，上帝「照他的形像」创造人类，这就是说我们可以和
他有关系，思想会和他相似。所以我们预期他所创造出来的东西应该是我们「可以理解
」的。
最后，圣经给了我们一个「理由」，实际上是一个任务：去研究科学。在创世记 1
:28，上帝告诉那两个他所创造的人(亚当、夏娃)：要生养众多，统治这地，管理有生
命的东西。圣经中很多地方告诉我们要帮助生并受苦的人，这些都需要我们了解自然界
才做得到。
圣经用自然界的许多现象告诉我们有关上帝的伟大、智慧和爱(诗篇 8； 19:1-6；
约伯记 38－ 41章；罗马书 1:18-20等)。了解自然界能帮助我们了解上帝。
圣经和科学的假设没有冲突，它是那两个科学假设的根据... 阅读全帖 |
|
l**********n
发帖数: 675 | 10 肆 科学的研究与认识神
如前所述，科学研究一般包括三个步骤或三个方面：A、观察现象（事实），B、发现普
遍规律（原理），C、根据规律作出预测或推论。近代科学更把从诸多现象所得出规律
和原理纳入一个逻辑演绎系统，即由逻辑法则及数学方法推理，产生一系列具体结论（
预测）。这些结论和预测可与实验事实（观察现象）作比较以验证其可靠性。
如果我们不把这些方法和步骤无限推广，并且真正采取科学的基本态度―实事求是，这
些科学的方法和步骤对于我们认识神是有帮助的。因为科学的基本原则是实事求是，基
督徒在信仰的事上更是实事求是，二者是不相冲突，不相矛盾的。骄傲、主观和自义是
科学研究的大敌，同样也是拦阻人认识神、经历神的大敌。
一 科学中的观察
观察现象和事实是科学研究中最重要、最初步、最基本的方法，也是我们认识外部客观
世界的基本方法。我们人类也具备一些认识外部世界的能力。这种对外部现象的观察主
要是凭着我们的五觉，即视觉、听觉、嗅觉、味觉和触觉，以及这五觉的延伸。例如，
借着眼睛的视觉，我们可以看到物体的颜色、大小、形状等；借着听觉，我们可以听到
不同的声音、音乐等。然而，人的五觉的观察能力是非常有... 阅读全帖 |
|
k***s
发帖数: 370 | 11 Pulp Fiction 是当时整日穿梭于宿舍和物理楼之间作论文时和"老
大"一起偷闲看的，我们都特别喜欢这部片子。它让我时常亲切地拥
抱那段颓废混乱的旧时光，象一条小猪想起它在烂泥堆里打滚的日
子。
老大老挂在嘴边的是里面的杀手Joule的一段台词-----
"The path of the righteous man is beset by all sides of the
inequities of the selfishness and the tyranny of the evil
men. Blessed is he, who is in the name of charity and good
will, shepherds the weak through the valley of darkness. For
he is truly his brother抯 keeper and the finder of the lost
children. And I will strike down upon thee with great
vengeance and fur |
|
U********d
发帖数: 577 | 12 6000 btu = 6330335.12 joules
30*10*6330335.12/3600000 = 1899100536/3600000 = 527.527927 kwh
每度电在账单上有吧，我们这里大概是0.08296刀每度，大概是43.7637168刀，今天牌
价算，合计人民币297.155637元。
yeah~ |
|
z***f
发帖数: 1182 | 13 郑州
nethard zzhn bely yycams wade ffdd xuanyuan czyhust
richardson vancomycin
Blueangels Orsino Hetzer huahuaniu cds xuxian firstangel
suancaiyu BOOL samma ilovegradma ohmygosh Cmeonfaya shanlin
shong Savant jasonzxs (祖籍 巩县) pkucu moondog xiaobailong
jodi yzzhang yeshi sunjot lanyi barkingDog littlewindy nany
wujia para soarchen sugnuf miaomi sunjot papaw barki... 阅读全帖 |
|
p****p
发帖数: 3360 | 14 放射性对人的影响（危险）分内照射和外照射。一般用单位体重吸收的电离能量剂量
Gray来表征。1 gray = 1 joule/kg
内照射是指不小心或特别情况下摄入到人体内以后对人的影响。一般来说，在相同放射
强度的条件下，对电离能力强而作用有效距离段的射线要特别防护内照射造成的破坏。
比如，α射线，弱β射线。伽马射线由于电离能力弱，作用距离很长，同样辐射强度，
内照射造成的电离比外照射要弱。而C14，P33等弱beta，以及所有的α，内照射基本上
就意味着全部辐射电离都被人体吸收；因此极度需要防护内照射。由于beta射线电离能
力比较强，理论上都要防护内照射的，但是由于中强β射线容易检测污染，外照射的防
护基本上可以杜绝中强β射线内照射的发生。
外照射主要用来防护中强β和所有的伽马，X-ray，比如P32，I125。避免他们穿过你的
黑发你的眼睛你的手。。。:-)
罗嗦完这些，回到你的问题。放射性对胎儿的影响是不可忽视的，特别是前三个月胎儿
的器官还在发育之中。C14是极弱的β，一张纸张它都透不过去，所以不用特别担心外
照射。但是由于它很弱，普通的盖革计数器根本无法检测是否有C14的 |
|
z*h
发帖数: 773 | 15 Electrofuel does not work. Joule limited is a joke. It may be worse than
Keasling's process.
Fatty acid esters may work due to unique market that ethanol and hydrogen
cannot work. But it may not compete with more efficiency ways in long terms.
Efficiency,cost and competing technologies. |
|
s****y
发帖数: 704 | 16 Please contact Biana Grizont directly.
www.Joulescientific.com
Email: b******[email protected]
Organic Chemist
Job Description
Currently we have a temporary to permanent opening for an Organic Chemist to
support a specialty chemical company located in Somerset County NJ.
Successful candidates will:
Develop new carbon materials and nanoribbins.
Purify, characterize, and ship out samples to customers.
Will be dealing with QC group.
Performing acidity testing and handling of chemic... 阅读全帖 |
|
m******y
发帖数: 2 | 17 我需要知道驱动 一个机械(相当于电动机)所需要的造价。
而输出的能量我已经知道。(需要在15秒内输出 40000 Jal或更多能量)
这应该是高压用电，
我如果用民用电的价格考虑就太便宜了，也不现实。
$0.07/度。。。 而 1度=3600 000 joule
那么我这种情况需要多大造价(就在这15秒时间里)
怎么考虑能量损耗。(大概?%) |
|
h********g
发帖数: 5 | 18 Guangfeng Zhao, Ming Liu and Fuqian Yang, The effect of an electric current
on the nanoindentation behavior of tin, Acta Materialia 60 (2012) 3773-3782
Abstract
Electrical–thermal–mechanical interactions determine the reliability and
performance of microelectromechanical devices and systems.
Using the nanoindentation technique the effect of an electric current
on the indentation deformation of Sn strips was studied for an
indentation load in the range 50–200 lN. During the indentation an e... 阅读全帖 |
|
E*******d
发帖数: 495 | 19 这个问题怎么答？
This constant, represented by h, has a value of 6.626 x 10 -34 (10 to the
negative 34th power) Joule seconds and is crucial to the field of quantum
mechanics. |
|
s*******t
发帖数: 16 | 20 厄。。我来科普一下
背景辐射一般在2mSv/a (Sv=sievert=joule/kg),期中包括宇宙背景辐射，自然界矿石
中的放射性元素（uranium），以及被人体摄入的放射性元素（Rn/K）。
在美国，radiation protection的dose limit是严格控制的。对于occupational
radiation worker是50mSv/a。对于public是1mSv/a
lz说的研究x-ray，具体实验条件，防护措施如何？
实验室有常备GM counter吗？实验室和x-ray machine有shielding吗？进出要佩戴film
badge吗？还有，进实验室前要不要进行操作培训？
如果对实验室的危害不是很确定的，最好的办法应该是找老板谈谈。或者，去学校的
radiation safety office。一般来说，学校既然有x-ray source，就一定有RSO，而且
老板也应该是authorized licensee。
其实radiation是满有趣的，有radiation therapy和diagnostic radiology。没有像大
家想的这么恐 |
|
w*u
发帖数: 2 | 21 You need to know the e-p interaction constant in that sample so you can calc
ulate how the heat generated by Joule heating is dissipated in the phonon sy
stem and then through the phonon coupling to the heat sink.
Because the system seems big so e diffusion is not dominating in this case.
Also the temprature is high, 2K, phonon specific heat constant is still high
enough for phonon system to dissipate heat.
But the authour is not worry about overheating yet.
He is just worry about the accuracy o |
|
w*******y
发帖数: 60932 | 22 From Buy.com
Belkin PureAV Home Theater Power Console PF30
Features
Level 4 Power Protection
Phase 3 PureFilter Circuitry with video, audio, and HiCurrent filters
Slim console design fits perfectly in your home theater cabinet
HiCurrent outlet for high-power amplifiers
Lifetime Warranty
$350,000 Connected Equipment Warranty
8 outletshttp://
3245 joules of surge protection
165,000-Amp maximum spike current
1 pair of gold coaxial connections for coaxial-cabl |
|
|
w*******y
发帖数: 60932 | 24 Belkin 12-Outlet Home/Office Surge Protector with Phone/Ethernet/Coaxial
Protection and Extended Cord for $19.91 at Amazon with free shipping with
Prime
Link:
http://www.amazon.com/gp/product/B000HPX46U/ref=ord_cart_shr?ie=UTF8&m=ATVPDKIKX0DER
I have this one and it's very nice ~ Good reviews ~ Thin profile. More
outlets and better joule rating than the one posted here from Newegg.
Product Features and Technical Details
Product Features
* 12-outlet surge protector with 10-foot cord ideal fo |
|
|
|
|
|
|
w*******y
发帖数: 60932 | 30 Belkin PureAV Home Theater Power Console PF30:
http://www.buy.com/prod/belkin-pureav-home-theater-power-console-pf30/q/loc/101/207514354.html
- AP20800FC08-BLK
Features
Video Features Level 4 Power Protection
Video Features Phase 3 PureFilter Circuitry with video, audio, and
HiCurrent filters
Video Features Slim console design fits perfectly in your home theater
cabinet
Video Features HiCurrent outlet for high-power amplifiers
Video Features Lifetime Warranty
Video Features... 阅读全帖 |
|
w*******y
发帖数: 60932 | 31 Linky:
http://www.yugster.com/default.aspx
Protect your electronics with the Philips 6-outlet Surge Protector 2-PACK!
Featuring 1000 joules of protection and $100,000 equipment warranty. The
Side entry outlets allow you to plug in multiple devices without the clutter
. Ships for $5.
Retail Price: $49.98
Yugster Price: $7.97
When I was reading that page at Yugster, it poped up a window for $5 off for
providing email address. That would make this $2.97+$5 ~ $8 + tax.
|
|
|
w*******y
发帖数: 60932 | 33 Link:
Not sure if it's B&M only, we'll see later.
|
|
w*******y
发帖数: 60932 | 34 Belkin PureAV Hybrid AVU1500 UPS with PureFilter Technology - AP51300fc10-
BLK:
http://www.buy.com/prod/belkin-pureav-hybrid-avu1500-ups-with-p
Features
Video Features Level 4 power protection
Video Features Uninterruptible Power Supply provides backup power to
DVRs, Media Center PCs, or any other devices for which you want to preserve
system settings
Video Features Automatic Voltage Regulation maintains constant voltage
by increasing low voltage and decreasing high voltage without... 阅读全帖 |
|
|
w*******y
发帖数: 60932 | 36 Belkin BE112230-08 12-Outlet Home/Office Surge Protector with Telephone and
Coaxial Protection
Length - 8 feet
Price: $14.99 shipped via Prime
Link:
http://www.amazon.com/Belkin-BE112230-08-12-Outlet-Protector-Pr
quote
Product Features
12-outlet surge protector with 8-foot cord ideal for high-end home and
professional workstations
Ideal solution for computers, laser printers, and home-theater systems;
includes connections to protect telephone and coaxial lines
Outlets include sliding safety cove... 阅读全帖 |
|
w*******y
发帖数: 60932 | 37 Amazon has the Cyberpower 850 8-Outlet Surge Suppressor - 2400 Joules for $
12.99. Shipping is free if you have Amazon prime.
Technical Details
3 Transformer spaced outlet
8 Protected outlets
LED Surge and ground indicator lights
6' Heavy duty power cord with right angle plug
Child-safe outlet covers
Link:
http://www.amazon.com/Cyberpower-850-8-Outlet-Surge-Suppressor/
!
|
|
w*******y
发帖数: 60932 | 38 Fry's has the Belkin 7-Outlet Surge Protector:
http://www.frys.com/product/5179706
[BE107200-12] for $4.99 AR
10/21 - 10/27
-12' Extended cord delivers optimal, safe AC power through a 14-gauge heavy-
duty cord
-2320 Joule energy rating provides maximum protection of all your sensitive
electronic devices
-7 Surge-protected outlets supply complete, 3-line AC protection
-Filters EMI/RFI noise up to 43 dB reduction
-Filters EMI/RFI noise up to 43 dB reduction
-$100,000 Connected Euipment Warranty... 阅读全帖 |
|
w*******y
发帖数: 60932 | 39 APC - 650VA Battery Back-Up System @ Best Buy
Model BE650MC
Normally $80, now $40.
This battery back-up system features 8 surge-protected outlets to protect
your computer and peripherals from power surges and spikes. The 340-joule
rating absorbs a high quantity of energy for improved performance.
Don't forget ShopDiscover 10% cashback.
Link:
http://www.bestbuy.com/site/APC - 650VA Battery Back-Up System/1259498.p?id=1218243760441&skuId=1259498
|
|
w*******y
发帖数: 60932 | 40 LG 42LV4400 1080p 120Hz 1.8 inch thin LED LCD HDTV Value Bundle with LG Blue
Ray and more $599 with free shipping!
price of the bundle drops during checkout at buydig:
http://www.buydig.com/shop/product.aspx?sku=E2LG42LV4400
bundle includes:LG 42LV4400 1080p 120Hz 1.8 inch thin LED LCD HDTV
LG BD611 Blu-ray Disc / DVD Player
Tripp Lite 6 Outlet Surge Protector (540 Joules, 4ft Cord)
Xtreme 3 HDMI Cables and Screen Cleaning Solution
Xtreme 37"- 64" Ultra Slim TV Wall Mount
|
|
|
|
