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全部话题 - 话题: plane
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l*c
发帖数: 65
1
来自主题: Military版 - 恐怖主义分子薄熙来
Obama was briefed immediately about death of British ex-pat Neil Heywood,
whose 'killer may have had a plane blown out of the sky'
The US president was told of alleged murder before foreign secretary
William Hague
Decision to inform president so soon after 'killing' is almost
unprecedented
Claims that murder suspect Gu Kailai ordered a plane to be blown up -
killing 112 people
The wife of rising Communist Party leader's political opponent was
target of the explosion
Chinese e... 阅读全帖
R****a
发帖数: 6858
2
来自主题: Military版 - F-35 又出问题了
F-35 又出问题了?
来源: IQ88 于 2013-02-22 13:57:12[档案] [博客] [旧帖] [转至博客] [给我悄悄
话] 本文已被阅读:452次
字体:调大/调小/重置 | 加入书签| 打印| 所有跟帖 | 加跟贴| 查看当前最热讨论主题
http://news.yahoo.com/pentagon-suspends-f-35-flights-due-crack-
WASHINGTON (Reuters) - The Pentagon on Friday suspended the flights of all
51 F-35 fighter planes after a routine inspection revealed a crack on a
turbine blade in the jet engine of an F-35 test aircraft in California.
It was the second grounding of the warplane in two months and marked another
setback ... 阅读全帖
q*****n
发帖数: 2570
3
来自主题: Military版 - 感觉像是飞机空中突然解体
http://www.reuters.com/article/2014/03/09/us-exclusive-probe-pl
Exclusive: Probe into missing Malaysia plane looks at possible mid-air
disintegration - source
(Reuters) - Officials investigating the disappearance of a Malaysian
airliner with 239 people on board are narrowing the focus of their inquiries
on the possibility that it disintegrated in mid-flight, a senior source
said on Sunday.
Malaysia Airlines flight 370 vanished after climbing to a cruising altitude
of 35,000 feet between Kuala Lu... 阅读全帖
u**c
发帖数: 17972
4
这下党中央有麻烦了,昨天还刚刚让全国所有主要媒体都报道了恐怖袭击可能性极小,
人民群众不要瞎猜给党添乱。帝国主义怎么这么不理解党的一片苦心呢。
http://www.reuters.com/article/2014/03/09/us-exclusive-probe-pl
If the plane had plunged intact from such a height, breaking up only on
impact with the water, search teams would have expected to find a fairly
concentrated pattern of debris, said the source, speaking on condition of
anonymity because he was not authorized to speak publicly on the
investigation.
The source was speaking shortly before Vietnamese authorities sai... 阅读全帖
a******n
发帖数: 280
5
http://www.dailymail.co.uk/news/article-2133462/Obama-briefed-i
Obama was briefed immediately about death of British ex-pat Neil Heywood,
whose 'killer may have had a plane blown out of the sky'
The US president was told of alleged murder before foreign secretary William
Hague
Decision to inform president so soon after 'killing' is almost unprecedented
Claims that murder suspect Gu Kailai ordered a plane to be blown up -
killing 112 people
The wife of rising Communist Party leader's political op... 阅读全帖
g******o
发帖数: 4042
6
只是试图链接,没有成功传输数据,具体情况不明
看来是美国人掌握的卫星
直接查卫星通讯记录,发现机栽天线一直在ping
话说回来, 美国媒体在这种事情上还是有操守的
至少努力给你圆回来
不会直接删贴尿遁
wsj现在压力很大,纽约时报,华盛顿邮报都在等着看笑话
Corrections & Amplifications
U.S. investigators suspect Malaysia Airlines Flight 370 flew for hours past
the time it reached its last confirmed location, based on an analysis of
signals sent through the plane's satellite-communication link designed to
automatically transmit the status of onboard systems, according to people
familiar with the matter. An earlier version ... 阅读全帖
c******n
发帖数: 5697
7
很恐怖的是:目的是要把这架飞机用在另外一个目标上
Each ping that came from the 777's SATCOM included GPS, altitude and speed
data
The transmissions, one person said, were comparable to the plane “saying I
’m here, I’m ready to send data.”
Unknown so far to investigators is what happened to the plane following the
final satellite ping, these people said. Questions remain about the plane’s
status, including what was happening in the cockpit.
But the huge uncertainty about where the plane was headed, and why it
apparently ... 阅读全帖
o*****D
发帖数: 1563
8
Highlights of Prime Minister Datuk Seri Najib Razak's statement on MH370
1、It is confirmed that the Aircraft Communications Addressing and Reporting
System (ACARS) was disabled just before the aircraft reached the East coast
of peninsular Malaysia.
2、Later, the aircraft’s transponder was switched off near the border
between Malaysian and Vietnamese air traffic control.
3、The aircraft shown in Royal Malaysian Air Force primary radar previously
is confirmed as flight MH370. This is based on raw sa... 阅读全帖
G**Y
发帖数: 33224
9
直接说putin干的不就完了:
http://www.foxnews.com/world/2014/07/17/malaysia-airlines-passe

。。。
The incident touched off immediate finger-pointing between Russian
separatists and the Ukrainian government. Eastern Ukraine separatist leader
Alexander Borodai told Reuters that Ukrainian military forces shot the jet
down, but Kiev denied involvement and labeled the incident a "terrorist act."
The White House said President Obama spoke with Ukrainian President
Poroshenko Thursday afternoon to discuss the crash... 阅读全帖
M*****n
发帖数: 2301
10
又一个俄国主播记者辞职了,受不了俄国政府撒谎
Another ‘RT’ reporter resigns over show’s Russia coverage
“I resigned from RT today. I have huge respect for many in the team, but I
’m for the truth,”
https://pbs.twimg.com/media/Bs0wlzjCAAAUybv.jpg:small
A reporter in London working for the television show “Russia Today” has
publicly resigned because she is furious about the station’s coverage of
the Malaysia Airlines plane that was shot down in eastern Ukraine.
“I resigned from RT today. I have huge respect for many in ... 阅读全帖
w*****g
发帖数: 1243
11
Just like a boat, a plane would be heavy on the left if all the passengers
are seated on the left side. Hence all passengers are usually evenly
distributed in the cabin before take-off or landing for a stable flight.
However, there is a slight difference between a boat and a plane. Since
plane has wings, it is more stable laterally. According to the notes
regarding fuel imbalance on an A320, with full tank on the left side (about
9300 kg), the maximum allowable imbalance is 1500 kg or 3306 lbs. ... 阅读全帖
c*******2
发帖数: 617
12
来自主题: Military版 - 美国否认P-8进入中国领空
US planes keep distance from Chinese `islands`for now
Last Updated: Friday, May 22, 2015 - 04:15
New York: US surveillance aircraft and naval ships have yet to test China`s
territorial claims around artificial islands built in the South China Sea,
but the Pentagon warned Thursday that could be "the next step."
Although the United States does not recognize China`s claims of sovereignty
around the manmade structures, American P-8 surveillance planes and naval
vessels patrolling the area have not v... 阅读全帖
s*x
发帖数: 8041
13
reunion岛上的搜索工作已经停止
SAINT-DENIS, Reunion, Aug 17 (Reuters) - The police and army on the Indian
Ocean island of Reunion have called off their search for more debris from
the wreckage of Malaysian Airlines flight MH370, which vanished last year,
police said on Monday.
A piece of wing was found on the shore of the French-governed island last
month and Malaysian authorities have said paint colour and maintenance-
record matches proved it came from the missing Boeing 777 aircraft.
Ten days of searchin... 阅读全帖
t*****y
发帖数: 1421
14
习大大来访,CNN首页关于CHina的新闻就是这个
http://www.cnn.com/2015/09/22/politics/chinese-jet-maneuver-pen
Chinese jet performs 'unsafe' maneuver near U.S. plane, Pentagon says
(CNN)A Chinese military jet performed an "unsafe" maneuver in front of a U.S
. reconnaissance plane last week, the Pentagon said Tuesday.
The announcement came the same day that China's President, promoting peace
and downplaying differences, arrived in Seattle to start a potentially
pivotal U.S. visit.
A U.S. RC-135 aircraft operating abo... 阅读全帖
R*2
发帖数: 225
15
来自主题: Military版 - 被宣布死亡
Missing UMich student Xin Rong declared dead 7 months after plane crash
Updated on October 5, 2017 at 7:29 PM Posted on October 5, 2017 at 5:30 PM
Comment
15
shares
By Lauren Slagter [email protected]
Xin Rong
Xin Rong
ANN ARBOR, MI - Missing University of Michigan student Xin Rong has
officially been declared dead.
Court records show Washtenaw County Judge Julia Owdziej issued an order
Thursday, Oct. 5 establishing the death of Rong, 27, who disappeared in
March after renting a private pla... 阅读全帖

发帖数: 1
16
Spoiler alert: 中或输
https://www.reddit.com/r/taiwan/comments/87i2lk/scenario_the_fourth_taiwan_
strait_crisis_of_2020/
2018 (March onward) – America and China initiate a series of tit-for-tat
trade restrictions and tariffs, gradually resulting in economic losses and
stock market drops totaling in the hundreds of billions
Mid-2019 – Somewhat overdue, the next global recession begins, mostly due
to bad debts and a round of mass layoffs originating in the Chinese economy.
Stock market crashes and so... 阅读全帖

发帖数: 1
17
A passenger on a Delta Airlines flight captured insane footage of the
seriously damaged engine that sparked an emergency landing and terrified
travelers.
Logan Webb shared the intense footage on Twitter, which shows the engine’s
spinner completely detached and whirling around the inlet mid-flight. Adding
fuel to the already frightening proverbial fire, was an orange glow from
within the shaft that no passenger wants to see from their plane seat.
A passenger on a Delta Airlines flight captured in... 阅读全帖
u***r
发帖数: 4825
18
来自主题: Military版 - 救美国就是救俄罗斯!!
Watch Russian military plane with masks & other Covid-19 medical aid depart
for US
https://www.rt.com/russia/484639-russian-coronavirus-aid-usa/
A military cargo plane carrying medical supplies to help the US combat the
coronavirus outbreak has taken off from an airbase in Russia, after
President Trump accepted an offer of assistance from Vladimir Putin.
“The plane with masks and medical equipment on board left for the United
States,” the Russian Defense Ministry announced in a brief statement e... 阅读全帖
g**1
发帖数: 10330
19
可怜小马哥27次哭求,无济于事。
http://www.defensenews.com/story.php?i=7378123&c=ASI&s=AIR
U.S. To Deny Taiwan New F-16 Fighters
Offers AESA Radar in Upgrade for Older Jets
TAIPEI - Bowing to Chinese pressure, the U.S. will deny Taiwan's request for
66 new F-16C/D fighter aircraft, a Taiwan Ministry of National Defense (MND
) official said.
"We are so disappointed in the United States," he said.
A U.S. Department of Defense (DoD) delegation arrived here last week to
deliver the news and offer instead a retrofi... 阅读全帖
d**********0
发帖数: 13081
20
首先, 新闻的来源是毛子。
http://www.truthorfiction.com/rumors/c/USS-DONALD-COOK.htm#.VLB
Russian Planes Zap USS Donald Cook's Missile Defense System-Fiction!
Summary of the eRumor:
Two Russian Su-24 bomber planes flew over the USS Donald Cook destroyer ship
in the Black Sea and “zapped” its missile defense system.
The Truth:
There’s no proof that Russian bomber planes zapped the USS Donald Cook’s
missile defense system.
The claim was first made by a state-run Russian newspaper known for
publishing propaga... 阅读全帖
e*c
发帖数: 395
21
来自主题: Military2版 - F-35首次飞越大西洋
意大利组装的第一架F-35,飞机只飞过15个小时,意大利飞行员只飞过50小时F-35,就
顶着120节的西北风横跨大西洋。麻痹的还是黑手党有胆。
NINJA DISCUSSES HIS F-35 FLIGHT ACROSS THE ATLANTIC: THE RIGHT STUFF ITALIAN
STYLE
2016-02-08 On Feb. 5, the Italian Air Force’s first F-35, AL-1 with code
“32-01” and markings of the 32 Stormo Wing landed at Naval Air Station
Patuxent River, Maryland, at the end of the JSF’s first ever transatlantic
flight.
The aircraft was piloted by “Ninja,”an Italian Air Force test pilot,
belonging to the Reparto Sperimentale Volo (Tes... 阅读全帖

发帖数: 1
22
http://goo.gl/YlOn9F
or
http://news.nationalpost.com/full-comment/rex-murphy-on-big-things-and-small-barack-obama-and-hillary-clinton-seem-more-alike-each-day
I think Hollywood could have saved itself some turmoil this year, and made a
few bucks in the process, if it had held off on the new Ghostbusters movie
and gone for something a little more current. There’s a great story sitting
on the scriptwriting tarmac, just waiting for the proper writers to put a
little creative wind under its wings. I... 阅读全帖
s********y
发帖数: 1547
23
DOVER, Del. (AP) -- Delaware State Police say a small U.S. Air Force plane
made an emergency landing in a field near Dover Air Force Base, crashed
through a fence and taxied onto a road clogged with rush-hour traffic. There
were no injuries.
Troopers say the plane, identified by DAFB officials as an Aero Club Cessna,
landed late Monday afternoon in a field southwest of the approach lights to
the runway.
Authorities say the plane went through a fence at a business and onto Bay
Road, where it stop... 阅读全帖
f**********t
发帖数: 1001
24
来自主题: JobHunting版 - 设计一个airplane control system并测试
这问题如何答好?
设计就是OOD。
然后测试的话,想到几点:
capability: how many planes it can deal with?
efficiency: how many seconds it takes to schedule the planes?
Robust: how about when a plane arrives late/early?
How about the system is suddenly out of electricity?
Safety: What if two planes require to land on the same plane with
in the same time slot?
欢迎提出看法
n*******c
发帖数: 1100
25
来自主题: Money版 - UA很粗鲁地把乘客拖下飞机
http://onemileatatime.boardingarea.com/2017/04/10/video-passenger-forcibly-dragged-off-united-flight/
"What do I make of this? Well, it’s sad that this is the second time in a
few months that someone was dragged off a plane. It’s even sadder than I
wasn’t fazed when I saw this video, which is perhaps a reflection of the
type of force we’re used to seeing police use in the US.
Obviously there would ideally be another solution, but at the same time the
guy sort of did this to himself. FAA regulati... 阅读全帖
n*******c
发帖数: 1100
26
来自主题: Money版 - UA很粗鲁地把乘客拖下飞机
http://onemileatatime.boardingarea.com/2017/04/10/video-passenger-forcibly-dragged-off-united-flight/
"What do I make of this? Well, it’s sad that this is the second time in a
few months that someone was dragged off a plane. It’s even sadder than I
wasn’t fazed when I saw this video, which is perhaps a reflection of the
type of force we’re used to seeing police use in the US.
Obviously there would ideally be another solution, but at the same time the
guy sort of did this to himself. FAA regulati... 阅读全帖
r*****e
发帖数: 7853
27
来自主题: Stock版 - 靠,联航这么流氓,该破产
Passenger dragged off overbooked United flight
(CNN)A man's refusal to give up his seat on an overbooked United Airlines
flight led to an upsetting scene Sunday night.
Several passengers on United flight 3411 from Chicago O'Hare International
Airport to Louisville, Kentucky, captured video of authorities dragging the
man off the plane after he apparently refused to leave.
Audra Bridges posted a 31-second clip of the incident on Facebook, which
showed three Chicago Department of Aviation security... 阅读全帖
j******3
发帖数: 18319
28
来自主题: NewJersey版 - 推荐《中国合伙人》
都是好听的歌。
Leaving on a jet plane
http://www.youtube.com/watch?v=eUD4y74YDik
All my bags are packed I'm ready to go
I'm standin' here outside your door
I hate to wake you up to say goodbye
But the dawn is breakin' it's early morn
The taxi's waitin' he's blowin' his horn
Already I'm so lonesome I could die
So kiss me and smile for me
Tell me that you'll wait for me
Hold me like you'll never let me go
Cause I'm leavin' on a jet plane
Don't know when I'll be back again
Oh baby, I hate to go
There's so... 阅读全帖
j******3
发帖数: 18319
29
来自主题: NewYork版 - 中国合伙人
都是好听的歌。
Leaving on a jet plane
http://www.youtube.com/watch?v=eUD4y74YDik
All my bags are packed I'm ready to go
I'm standin' here outside your door
I hate to wake you up to say goodbye
But the dawn is breakin' it's early morn
The taxi's waitin' he's blowin' his horn
Already I'm so lonesome I could die
So kiss me and smile for me
Tell me that you'll wait for me
Hold me like you'll never let me go
Cause I'm leavin' on a jet plane
Don't know when I'll be back again
Oh baby, I hate to go
There's so... 阅读全帖
s*****o
发帖数: 22187
30
来自主题: Football版 - Austin Hatch
http://espn.go.com/mens-college-basketball/story/_/id/12299896/
At the age of 8, he was flying home with his family from their lake house in
Michigan, his father piloting the plane as he always did. On approach into
Fort Wayne, Indiana, something went terribly wrong and the plane crashed,
exploding in flames on the side of a small country road in Uniondale.
Austin's mother, Julie; his older sister, Lindsay; and his little brother,
Ian -- all seated in the back -- were killed. Austin, seated in t... 阅读全帖
C*********o
发帖数: 563
31
更新一下。
经过上课和自己琢磨了很多youtube上的swing vision,终于发现并改正我的最大的问
题。
问题出在:
1.swing plane: 我的backswing离开了swing plane(1-plane),然后down swing的时
候就不容易回到正确的plane上来。是造成缺乏consistency的最大原因。
2.extension: 右肩(我是左撇子)在击球瞬间及followthrough的时候倾向于抬高而不
是保持在swing plane上,造成extension的时候的lag(是这么叫吧)甚至没有full
extension,球会或者slice,或者topspin.
3.trying too hard。这也是2的直接原因之一。
最近一直在改这几个毛病,效果不错。尤其是那个向往很久的back spin弹道曲线也出来了。
Youtube - 很好很强大!
ET
发帖数: 10701
32
来自主题: Golf版 - 很长进
u care my personal experience , or I share what I knew?
basically, there are several different understanding about this issue, as u'
ve know. one swing-plane or two swing-plane.
i guess u like the one swing plane more than the 2. i also guess
if you hit the ball using the swing plane of take-away, u'll feel u are
gonna slice it.. or u feel ur club face is gonna be open at the contact. so
u change ur downswing plane to be a better position you feel ur club face
should be square position.
so, the
ET
发帖数: 10701
33
still, depends on the physical condition of a player, and its capability.
My swing plane could get flatter lately 'coz I sensed I squarted more than
used to be. I didn't take my swing video to look at it tho.
I guess what made it happen is that it's getting cold and windy in ausint TX
in the past monthes, I have to have a wider stance to stablize my body in
this windy condition.
flat-plane, upright-plane, one-plane or two-plane, all are just some
concepts only. What really makes sense is how the
b*******e
发帖数: 724
34
来自主题: Golf版 - 新手冒泡。。。
search Youtube for shawn clement. He has on his channela lot of free, <10-
minute, entertaining videos clips. Excellent fundmentals that apply to most
amature golfers. He does not emphasize on one-plane or two-plane swing. But
I think he is a two-plane guy. For one-plane swing, check Chuck's rotary
golf website. oneplanegolfswing.com, great downloadable videos for a small
fee. If you are a true beginner, the differences between one and two plane
do not matter, just stay with Shawn Clement's. Goo
v*****r
发帖数: 2325
35
来自主题: Golf版 - 终于
赞"hit as hard as i want". 记得某次PLAYING LESSON WITH PRO 说到 'ONCE ON
PLANE, I CAN HIT AS HARD AS I WANT".
看来您现在真正 ON PLANE 了..
I GUESS HIT HARD 的前提是稳定的SWING PLANE AND TEMPO....
而 CONSISTENT SWING PLANE IS SUPPORTED BY STABLE POSTURE....
I TEND TO HIT HARD OFTEN TOO, BUT WITHOUT TEE OR GOOD LIE, I OFTEN FAILED TO HIT SOLID... 我最近发现我的POSTURE 在SWING 中变了... 注意改了以下结果好了一些, 少了 HITTING FAT AND CHUNKED PITCH....
但是我想了一下, 其实我平时练习或打球的时候, 对SWING PLANE 感
觉还是不多.... 我觉得我只能感觉得到和能CHECK的东西有一下一些(CHECK ONE
AT A TIME):
m****8
发帖数: 327
36
来自主题: Golf版 - 最近一点心得
Exactly.
Hardy 的理论把两个词汇给彻底毁了。他所谓的one plane,two plane swing应该叫
one axis ,two axis swing。他的说法引起极大的混乱。
虽然理论上说平面移动的程度越小越容易回归,但是pro基本上都是大幅度平面移动的
swing,包括tiger等。只有matt和hogan的range比较小。
我自己发现大range平面移动时候打的球比较实,也远也直。可能小range的backswing
手更靠后方,其实更难准确回归。我只是猜测,具体什么原因没琢磨透。
Hogan在五课里也讲到这个问题,即downswing plane比backswing plane要斜要偏右。
他其实讲得不完全对,那只是平面回归给人的一种感觉。所以很多人说hogan的书很多
错误,要看你怎么读,如果只是生硬地照搬,确实对初学者有时有反作用。
moe norman的swing最接近single plane swing。但是为什么没有人学他,是不是因为
不优美的缘故? golf比较是一项白人展现所谓高雅和风度的运动。所以才有那么多礼
仪和框框条条。
w******8
发帖数: 977
37
我认为他说的不适合one-plane swing。one-plane swing要做到这一点只有一种可能,
就是腰弯的很低,这样shoulder turn plane就会很陡。如果是比较upright的站姿就不
可能做到不碰墙。我想他可能是想让大家体会更陡的上杆,这样的好处是下杆容易drop
,容易打出in-side-out的swing.一个例子就是Jim Furyk.不过那是2 plane swing, 如
果你是one-plane swing的话就没必要练这个。
b*********s
发帖数: 6757
38
来自主题: Tennis版 - 发球:黑导
最重要的还是放松,这样要加速度时可以在很时间内把挥拍速度加上去。
还有点是take back loop in one plane. 这样的swing path 是在最放松的情况下达
到最节近路线。整个take back loop都在 x-y plane. 很多wsn的发球都会从x-y plane
开始,变成x-z plane,再回到x-y plane... 这样你会loose time-->fell rushed....
这个比较难describe, 不知道我有没有说清楚。
很多时候,你其实是时间充足,但你的brian tells you other wise, so in a way
you have to trick your brain. 练习时你可以试试空挥, 要有抛球动作但不要抛球
, 顺了些后,再把抛球加进去但不要打球, 最后再把全部动作放 进去。 如果不顺了
,再从头开始。。。need patience and discipline.... (下半身先不要动,保持稳定)
还有一点就是大家体能不一样,发球也都有自己的nitch. 我说的发球只是一个
reference,不... 阅读全帖
b*********s
发帖数: 6757
39
来自主题: Tennis版 - 技术贴: tale of two backhands
先说说grip 吧 (图一). Federer的单反 grip 可以说是 classical 的full eastern
backhand grip, 而Wawrinka的 grip, 要从 full eastern backhand grip 朝
continental grip位置稍微移一点点 (我之前在另一个贴上提过, 不过说倒了, 现在纠
正一下)
他们两的准备动作都差不多(图二), 左手扶拍,右臂稍弯,怎个右肩都转了过来.
接下来就不同了, Federer racquet drop 后, 拍面会对back fence, 而Wawrinka 以及
其他单反的pros 拍面都对着side fence (图三). 这也是我认为Federe反手问题所在之
一, 其他pro 会拍路线基本是linear plane (let's call that plane y plane), 而
federer却得先从 x plane 拉到 y plane 在开始forward swing. 总结Federer多一个
motion, 丢了些time.
图四是contact前手臂形态, 其他pro 手... 阅读全帖
E***1
发帖数: 2534
40
来自主题: Travel版 - asiana掉了架777
http://www.nytimes.com/2013/07/07/us/san-francisco-plane-crash.
Plane Crashes on Landing in San Francisco
By RAVI SOMAIYA
Published: July 6, 2013
A Boeing 777 operated by the Korean airline Asiana crashed Saturday
afternoon while landing at San Francisco International Airport, the Federal
Aviation Authority said.
Images and video posted on social media by eyewitnesses to the crash showed
the plane lying on the ground, its nose pointed slightly upward, apparently
on fire and billowing smoke. It w... 阅读全帖
l*****o
发帖数: 19653
41
来自主题: LeisureTime版 - zt 精神病院长: 肉眼看不出区别
。。。。。。
照相机的像素,就是ccd sensor的数量,这个没什么好说的。每个ccd element就像一
个计数器,他的功能就是数有多少电子(光子,根据光电效应)在其中。。。
CCD的尺寸确实因为品牌不同而不同,但绝对不会有1平方寸和10平方寸那么远的差距。
我并不是狠确定那些厂家是否自己生产ccd,我猜想应该都是买的。如果你能证明每个
厂家都自己产ccd,我会狠吃惊。。。
没错,resolution是那么定义的。但不要忘记,beam optics是可逆的,也就是说,在
objective plane上的一点,要对应image plane上的一点,反之亦然。 当image plane
上两点之间间距小于diffraction limit所定义的尺寸(由diffraction limit(degree)
和于透镜的距离决定)时,同样,也就意味着它们所对应的objective plane上的两个
点不能被resolve。
换句话说,当由ccd像素大小决定的两个采样点间距小于由diffraction limit和景物距
离决定的resolution时,objective plane上的... 阅读全帖
b*s
发帖数: 82482
42
来自主题: LeisureTime版 - zt 精神病院长: 肉眼看不出区别
请不要把CCD和CMOS厂家跟照相机厂家混为一谈。
成像系统的像素密度需要跟Nyquist采样率匹配才有效果,而Nyquist跟成像平面上的根
据镜头数值孔径和放大倍数所得到的像size有关。像素密度是需要相机厂商来选择的,
就像是轮胎是汽车厂商要选择搭配发动机的。但是轮胎厂商可以是独立厂商,所生产的
产品并不跟发动机直接联系,就像是CCD和CMOS厂商跟镜头厂商并不直接联系。照相机
厂商来决定正确的搭配和选材,正如汽车厂商要确定轮胎和发动机的搭配一样。
成像质量,特别是低光条件下的成像质量,跟CCD的full-well capacity还是很有关系
的,而full-well capacity跟CCD表面积直接相关,另外CCD的灵敏度还跟back-
illumination相关,虽然这个很少用在consumer级别的产品上。
另外,现在的CMOS芯片应用很广了,佳能的好几代产品都是CMOS主打了,CCD一统天下
的时代已经过去。CMOS现在已经进入Scientific-grade market了……

。。。。。。
照相机的像素,就是ccd sensor的数量,这个没什么好说的。每个c... 阅读全帖
j***b
发帖数: 5901
43
来自主题: Movie版 - 刚看了flightplan(含剧透)
Let me also point out a couple of specific points where the bashers have
been unreasonable.
1. People say Kyle only designs air plane engines, so she shouldn't know that well about a plane's structure. This is bullshit. There is nothing wrong with an air plane engine designer knowing the structure of a plane.
2. The bomb is indicated to be able to vaporize a person, there is no way that Kyle can survive it. Valid point, but since when people start to care about how explosion works in real life w... 阅读全帖
w*l
发帖数: 2550
44
本版上出现了两个以上的版本,其中一个是plane提供的,另外有一个是从方舟子微波
上提供的。
plane提供的版本可以很清楚的听出来是“单”,方舟子的版本类似于“dai或者da”。
plane声称他只做了降噪和放大,并且取的音频时间较长。plane提供了链接下载某些音
频分析工具,以供确认。plane指控方舟子的版本切取了“单”音的约2/3,故此产生了
歪曲结果。
请听众自己判断。
o*****D
发帖数: 1563
45
Highlights of Prime Minister Datuk Seri Najib Razak's statement on MH370
1、It is confirmed that the Aircraft Communications Addressing and Reporting
System (ACARS) was disabled just before the aircraft reached the East coast
of peninsular Malaysia.
2、Later, the aircraft’s transponder was switched off near the border
between Malaysian and Vietnamese air traffic control.
3、The aircraft shown in Royal Malaysian Air Force primary radar previously
is confirmed as flight MH370. This is based on raw sa... 阅读全帖
d********f
发帖数: 43471
46
来自主题: Joke版 - Re: 观《建党伟业》有感
Under this stereographic projection the north pole itself is not associated
with any point in the complex plane. We perfect the one-to-one
correspondence by adding one more point to the complex plane – the so-
called point at infinity—and identifying it with the north pole on the
sphere. This topological space, the complex plane plus the point at infinity
, is known as the extended complex plane. We speak of a single "point at
infinity" when discussing complex analysis. There are two points at i... 阅读全帖
I******a
发帖数: 3812
47
来自主题: Thoughts版 - 也八个交通事故
惨啊,583 的命, 历史上最大空难。 尾巴拖在跑道上劈刺刀,跟那个卡亭森林的撞树
有一比。
http://en.wikipedia.org/wiki/Tenerife_airport_disaster
Speculation regarding other contributing factors includes:
Captain Van Zanten's failure to confirm instructions from the tower. The
flight was one of his first after spending six months training new pilots on
a flight simulator, where he had been in charge of everything (including
simulated ATC), and having been away from the real world of flying for
extended periods.[7]
The flight engineer's ap... 阅读全帖
l**********t
发帖数: 5754
48
chapter 7.5 He That Hath The Son Hath The Life
There are various planes of life. Human life lies between the life of the
lower animals and the life of God. We cannot bridge the gulf that divides us
from the plane above or the plane below, and the distance that separates us
from the life of God is vastly greater than that which separates us from
the life of the lower animals.
In China one day I called on a Christian leader who was sick in bed, and
whom, for the sake of this story, I shall call ‘M... 阅读全帖
l**********t
发帖数: 5754
49
chapter 7.5 He That Hath The Son Hath The Life
There are various planes of life. Human life lies between the life of the
lower animals and the life of God. We cannot bridge the gulf that divides us
from the plane above or the plane below, and the distance that separates us
from the life of God is vastly greater than that which separates us from
the life of the lower animals.
In China one day I called on a Christian leader who was sick in bed, and
whom, for the sake of this story, I shall call ‘M... 阅读全帖
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