C*****1
发帖数: 746 | 1 Where: Mt. Monadnock White Cross Trail
When: 10:00AM 01/16/2010
White Cross Trail starts from the White Dot trail 0.5 mile from headquarters
and is a less steep trail to the summit than the White Dot Trail. The White
Cross Trail (formerly Spruce Link) starts on easy to moderate grades along
a well worn path for the first 0.3 miles to the junction of the now closed;
White Cross Trail to Falcon junction. The White Cross Trail heads up an area
burned over in 1953 now recovering to a forest of young |
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y****4
发帖数: 231 | 2 转个老外对付white bass的setup （ncangler.com）：
I know there isn't much secret in the Penny's Bend run of white bass on the
Eno anymore, I have been fishing the run too long to remember when I started
, so with that in mind and seeing a lot of responses from people who would
like to try it and keep asking about best lures, rod/reel combos, etc I
thought I would share what I know and anyone else can feel free to share
some tricks or tips as well. If you were to rummage through my fishing vest
you would fi... 阅读全帖 |
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u****s
发帖数: 2186 | 3 http://www.mobilesdna.com/news/white-iphone-4-purged-from-apple-online-store/2057/
by Harold Gechlik on October 29, 2010
Since yesterday there were rumors that Apple has cancelled the release of
White iPhone 4 and today Apple has quietly removed all references to White
iPhone 4 from its online store and website. Earlier, the website displayed
an option for the white iPhone 4 with a text “White iPhone currently
unavailable for pre-order or in-store pickup”. Now it is completely removed
. On Tuesd... 阅读全帖 |
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w*p
发帖数: 16484 | 4 Dozens of environmental activists showed up in front of the White House
Thursday to get arrested in a peaceful protest against a proposed oil
pipeline that would cut across the American Midwest.
Organizers said that over the past 10 days, about 800 people have been
handcuffed and bused off to a police station in this ongoing action.
At issue is a proposed pipeline that would connect oil resources in Alberta,
Canada, to refineries on the Texas coast. The 1,700-mile long Keystone XL,
as it's calle... 阅读全帖 |
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c*****g
发帖数: 21627 | 5 jason nguyen1 month ago
these asian bitches love to look down on asian guys who have disadvantages
being in a foreign country. Yeah they are not tall enough not enough money
not enough social status and why? First of all first generation immigrants
will be like that. You dont see hispanic girls all date white girls like
these asian whores..sorry if you really date or marry non asian because of
love, im not talking about you. But bitches that look down on their own
immigrant fathers and want that... 阅读全帖 |
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b********n
发帖数: 38600 | 6 http://theweek.com/article/index/272817/speedreads-chris-rock-o
Chris Rock on the Obama presidency: 'That's not black progress. That's white
progress.'
In 2008, the election of President Obama was roundly hailed as a major step
forward for race relations in America — but in a lengthy interview with New
York Magazine, Chris Rock explained that the term "race relations" doesn't
capture what's really happening. "When we talk about race relations in
America or racial progress, it's all nonsense. The... 阅读全帖 |
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Q*****Y
发帖数: 741 | 7 如果加上性别，则高学历中白人男性Trump明显占优
Clinton Trump
white college-grad women
51% 45%
white non-college women
34% 62%
white college-grad men
39% 54%
white non-college men
23% 72%
non-whites
74% 21% |
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l*****r
发帖数: 687 | 8 being with
a white dude you feel very you feel very
picturesque when you're with a white
dude you know you feel like you're in a
Wes Anderson movie or something and you
know white dudes they teach you about a
lot of cool stuff like voting and
recycling and disturbing documentaries
they introduce you to cool stuff like
that and it's very you know it's hot
hooking up with a white dude I mean
nothing makes me feel more powerful than
when a white dude eats my pussy oh my
god I just feel like I'm abs... 阅读全帖 |
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g********d
发帖数: 4174 | 9 http://www.advocate.com/politics/2012/05/16/white-house-issues-
The White House on Tuesday threatened to veto the Violence Against Women Act
(VAWA) should protections for LGBT victims remain absent from the bill's
language.
The House version of the bill’s reauthorization “fails to include language
that would prohibit discrimination against LGBT victims in VAWA grant
programs,” according to a White House Statement of Administration Policy (
SAP) that lists other perceived major flaws, including t... 阅读全帖 |
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B**W
发帖数: 2273 | 10 For some people, snowflakes falling from the sky on Christmas may actually
satisfy your requirement of a white Christmas. However, did you know the
National Climatic Data Center (NCDC) has actually come up with a standard
definition that the forecast map above is based on? A white Christmas is
defined as having one inch of snow on the ground on Christmas morning. No
snow actually has to fall on Christmas Day.
Areas shaded white on the map above are most likely to see a white Christmas
. A white ... 阅读全帖 |
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l****z
发帖数: 29846 | 11 August 6, 2013 by Warner Todd Huston
Many on the far left continue to claim that America needs to have “a
discussion” on race–even though we’ve been talking about it since roughly
1787. But one black comedian, W. Kamau Bell, apparently doesn’t want to
have that discussion. He says all whites are racist, that is that, and they
shouldn’t be allowed to talk about what’s racist and what isn’t.
The extremist host of FX’s Totally Biased with W. Kamau Bell, told the
media that white people should not... 阅读全帖 |
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l****z
发帖数: 29846 | 12 Top Internal Revenue Service Obamacare official Sarah Hall Ingram discussed
confidential taxpayer information with senior Obama White House officials,
according to 2012 emails obtained by the House Oversight and Government
Reform Committee and provided to The Daily Caller.
Lois Lerner, then head of the IRS Tax Exempt Organizations division, also
received an email alongside White House officials that contained
confidential information.
Ingram attempted to counsel the White House on a lawsuit from... 阅读全帖 |
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l****z
发帖数: 29846 | 13 White House now accuses fellow Afghan vets of “swiftboating” Bergdahl
June 4, 2014
You knew it was coming, didn’t you?
“Every [White House] aide I’ve talked to said they expected there to
be controversy involving the decision to release five members of the Taliban
from Gitmo, and the fact that this would then escalate that debate, which
has been simmering for a good five years, which is what to do with those
detainees, how do you release them, where do you release them. They did not
expect ... 阅读全帖 |
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l****z
发帖数: 29846 | 14 6:23 PM, Oct 18, 2014 • By DANIEL HALPER
On Friday, the White House announced Democratic hack Ron Klain as the point-
man on the Ebola crisis. But despite his new role, which is being described
as some as the Ebola czar, Klain was not in attendance at the White House
meeting on Ebola on Friday.
At least 21 other White House officials, including the vice president, were
either in attendance in person or via video conference. Including the White
House communications director. But not
Here's ... 阅读全帖 |
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j****7
发帖数: 667 | 15 LOS ANGELES (Reuters) - California's Hispanic population will equal that of
whites this year before becoming the state's largest demographic group in
2014 for the first time since statehood in 1850, a government report showed
on Thursday.
That change in the most populous U.S. state will make it the third where
whites do not comprise a plurality of the population, after New Mexico and
Hawaii.
The shift is occurring alongside nationwide growth in the Hispanic
population, which grew to 16.7 percent... 阅读全帖 |
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s******g
发帖数: 755 | 16 Apple Is Said to Ready Sale of White IPhone After 10-Month Wait
Adding a white model may help spur demand as Apple works on the next
generation of its top-selling product. Apple, the world’s largest
technology company by market value, isn’t planning to unveil a new iPhone
at its June developers’ conference, breaking with its practice in past
years, two people familiar with the matter said. It may instead introduce
the next iPhone in September, according to Mike Abramsky, an analyst at RBC
Capita... 阅读全帖 |
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e*******e
发帖数: 1837 | 17 上上周末去了Little Cottonwood Canyon的White Pine Lake.虽然White Pine Lake和
Red Pine Lake从同一个地方出发，但去White Pine的人明显少很多，不知道是因为这
条路长一些 (往返10 mile), 还是有什么其他的原因。其实景色上我觉得更有千秋，也
说不上哪个更好些。过两天再贴点去Red Pine的照片，大伙可以比较一下。不废话了，
上照片：
White Pine Lake from the pass：
Rocky ridge between White/Red Pine Canyon:
White Pine Lake:
路边的小溪和草甸：
松鸡一只：
Western Coneflower:
Jacob's ladder:
Pearly Everlasting:
Mountain Dandelion:
Lewis Monkey Flower:
Yellow Monkey Flower:
Parry Primrose: |
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t*****s
发帖数: 3478 | 18 今天与大仙一起，起了大早，终于租到船，6点钟还不到一点，就漂在波多马克的河上
的DC段了。(钓鱼地方在这里，http://www.fletchersboathouse.com/)
先去钓shad。
1. 边上两个老美排队租船时，刚好排在我们前后。这两人飞钓功夫了得，其中一个先
开张了。
2. 大仙上过shad无数，我是第一次来这里钓，以前也没有上过shad。正聊着天，
忽然竿头像是被拎了一把，如一个少体校练拳的女生，一拳打过来一样，俺一掌接住，
一股细细但是坚定的力量一刹那间传到我的腰间，还没有等我发力还手，这女生一个鹞
子翻身跳出水面。我迅速摇轮，把她逮住了。这是我的第一条。
3. 合影留念
4. 大仙说标准姿势是捧着的
5. 大仙和我同时上了，一人一条啦，都给我来抓着。大仙今天在我严格要求下，摄影
技术进步神速。：）
6. 噼里啪啦上了不少呢。今天我们有个重要的任务，要拍一张麻油喜欢的鱼照，要给
他没有得钓的人，看看过过瘾。唉，这个鱼太活跃，拍了无数张照片，还是没有比较满
意的。
然后，我说，最后一条shad了，接下去去钓white perch了。这个最后一条，最后一
条说了三遍时... 阅读全帖 |
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t*****s
发帖数: 3478 | 19 今天与大仙一起，起了大早，终于租到船，6点钟还不到一点，就漂在波多马克的河上
的DC段了。
先去钓shad。
1. 边上两个老美排队租船时，刚好排在我们前后。这两人飞钓功夫了得，其中一个先
开张了。
2. 大仙上过shad无数，我是第一次来这里钓，以前也没有上过shad。正聊着天，
忽然竿头像是被拎了一把，如一个少体校练拳的女生，一拳打过来一样，俺一掌接住，
一股细细但是坚定的力量一刹那间传到我的腰间，还没有等我发力还手，这女生一个鹞
子翻身跳出水面。我迅速摇轮，把她逮住了。这是我的第一条。
3. 合影留念
4. 大仙说标准姿势是捧着的
5. 大仙和我同时上了，一人一条啦，都给我来抓着。大仙今天在我严格要求下，摄影
技术进步神速。：）
6. 噼里啪啦上了不少呢。今天我们有个重要的任务，要拍一张麻油喜欢的鱼照，要给
他没有得钓的人，看看过过瘾。唉，这个鱼太活跃，拍了无数张照片，还是没有比较满
意的。
然后，我说，最后一条shad了，接下去去钓white perch了。这个最后一条，最后一
条说了三遍时，我们才真的起船要走。差不多最后一分钟时，我上鱼了，大仙收竿中。
几乎最后几秒钟，大仙啊... 阅读全帖 |
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b******n
发帖数: 2328 | 20 "White Flag"
I know you think that I shouldn't still love you,
Or tell you that.
But if I didn't say it, well I'd still have felt it
where's the sense in that?
I promise I'm not trying to make your life harder
Or return to where we were
I will go down with this ship
And I won't put my hands up and surrender
There will be no white flag above my door
I'm in love and always will be
I know I left too much mess and
destruction to come back again
And I caused nothing but trouble
I understand if you ca... 阅读全帖 |
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s****7
发帖数: 2507 | 21 avid
Bethel, CT
I think its because of just general attraction and the fact that the
majority of Asian women are actively seeking out white men. Its pretty
common knowledge at this point and white guys are taking advantage (not in a
bad way). From people I've asked the most common answer is "the exoticness"
of asian girls are the most attractive feature. And most of these said
women are Asian American and they just simply don't find their male
counterparts attractive. Also status is important to... 阅读全帖 |
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E*****m
发帖数: 25615 | 22 I really like Christmas
It's sentimental, I know, but I just really like it
I am hardly religious
I'd rather break bread with Dawkins than Desmond Tutu, to be honest
And yes, I have all of the usual objections
To consumerism, he commercialisation of an ancient religion
To the westernisation of a dead Palestinian
Press-ganged into selling Playstations and beer
But I still really like it
I'm looking forward to Christmas
Though I'm not expecting a visit from Jesus
I'll be seeing my dad
My brother a... 阅读全帖 |
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l******t
发帖数: 2113 | 23 You think Apple might have have killed the white iPhone 4 in the favor of
the iPhone 5? Think again! In the grey markets of China, white iPhone 4s
are being sold with labels on them saying “for internal use only”, and
moreover, they are all locked to AT&T, running iOS 4.1! Could this mean
that Apple has plans to launch these forgotten babies in the US in the
coming months or so?
The price of these supposedly genuine white iPhone 4s is undoubtedly high.
The 16GB model costs around $828 to $1024, ... 阅读全帖 |
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b*****e
发帖数: 1193 | 24 我的看法
１）white noise是如何产生的？所有的电路都会产生吗white noise？
white noise是随机噪声，没有特定的统计规律的噪声；所有电路元件的噪声叠加在输
出端，可以看作白噪声；做仿真时我用gaussian noise作为white noise的近似
２）如何确定采集的数据中有white noise？
作FFT，可看见频谱很宽的噪声
无法通过带通/阻filter有效去除。
３）如何消除white noise？能推荐几个算法吗？
Adaptive filter
adaptive median filter
wiener filter
另外观察噪声的幅值和相位特征，也是一个很直观的滤波的办法 |
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w*******y
发帖数: 60932 | 25 Shaun White Skateboarding - Xbox 360 Rating: T=Teen $14.99
Link:
http://www.bestbuy.com/site/Shaun White Skateboarding - Xbox 360/9977237.p?skuId=9977237&productCategoryId=abcat0701009&id=1218204528947
Shaun White Skateboarding - Nintendo Wii Rating: E10+=Everyone 10+ $14.99
Link:
http://www.bestbuy.com/site/Shaun White Skateboarding - Nintendo Wii/9977167.p?skuId=9977167&productCategoryId=pcmcat147400050009&id=1218204529388
Shaun White Skateboarding - PlayStation 3 Rating: T=Teen $14.99
Link:
h... 阅读全帖 |
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b********n
发帖数: 38600 | 28 http://townhall.com/columnists/kyleolson/2012/12/19/professor-b
Some opinions only get attention because they come from people with advanced
degrees who make their living on the taxpayer dime. That’s certainly the
case for Hugo Schwyzer, a history and gender studies professor at Pasadena
City College.
He has a history of blaming white men for most of the mass killings that
take place in the United States. Friday’s tragic shootings in Newtown,
Connecticut gave him a great opportunity to spout his... 阅读全帖 |
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b**********5
发帖数: 7881 | 29 【 以下文字转载自 NewYork 讨论区 】
发信人: beefcurtain5 (beefcurtain5), 信区: NewYork
标 题: now the liberals are complaining the fed is too white (转载)
发信站: BBS 未名空间站 (Thu May 12 13:14:17 2016, 美东)
发信人: beefcurtain5 (beefcurtain5), 信区: Stock
标 题: now the liberals are complaining the fed is too white
发信站: BBS 未名空间站 (Thu May 12 13:14:05 2016, 美东)
Democratic presidential front-runner Hillary Clinton said she would support
changes to the top ranks of the Federal Reserve, an issue recently
championed by progressive ... 阅读全帖 |
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Q*****Y
发帖数: 741 | 30
clinton Trump
white college graduates
45% 49%
whites no degree
28% 67%
non-whites college grads
71% 23%
non-whites no degree
75% 20% |
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l****z
发帖数: 29846 | 31 White House changes story on Obama's uncle
December 5, 2013 - 6:05 PM
By JIM KUHNHENN, Associated Press
WASHINGTON (AP) — The White House said Thursday that President Barack Obama
briefly lived with an uncle who faced deportation from the United States,
correcting its previous statements that the president had never met Onyango
Obama.
The 69-year-old, Kenyan-born half-brother of Obama's estranged father was
granted permission this week to stay in the U.S. after ignoring a
deportation order two d... 阅读全帖 |
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y*******n
发帖数: 237 | 34 想卖的物品:
6 xIPAD2 (4x32gb wifi white + 2x16G3G white + 2xsmart covers)
这6个周六可以drop, 可能明天还有新的.
单张面值:
you known
可接受价格(必须明码标价！):
4xipad2 32gb wifi white $730/each
2xipad2 16gb 3G+wife white $845/each
2xsmart covers $50/each
物品新旧要求:
new IN HAND
邮寄方式要求:
YL
买卖双方谁承担邮寄损失(Required if not code only):
default
付款方式说明:
BOA
其他补充说明:
广告的有效期:
物品来源(Required for All Cards!):
bb+apple
我的联系方式:
pm
Warranty期限:
能否证明是合法的一手卡?(Required for All Cards!):
YES
WITH RECEIPT
state and zip
OR |
|
b*********s
发帖数: 229 | 35 二手交易风险自负！请自行验证是否合法和一手卡！:
我想卖的物品:
iPad 2 Wifi 32g, 64g WHITE
单张面值:
32gb wifi, white x9 @ $800 ea
64gb, wifi, white x2 @ $900 ea
可接受价格(必须明码标价！):
32gb wifi, white x9 @ $800 ea
64gb, wifi, white x2 @ $900 ea
物品新旧要求:
new in hand, sealed
邮寄方式要求:
up to you
买卖双方谁承担邮寄损失(Required if not code only):
default
付款方式说明:
non cc pp
其他补充说明:
Items are in Austin TX. Local preferred. If so, cash only. thanks.
广告的有效期:
物品来源(Required for All Cards!):
apple store
我的联系方式:
bbs mail
Warranty期限:
能否证明是合法的一手卡?(Required for All... 阅读全帖 |
|
d*****n
发帖数: 684 | 36 广告标题:
2x Ipad 3 32G 4G ATT Black for White
我现有的物品:
2x Ipad 3 32G 4G ATT Black
我想要的物品:
2x Ipad 3 32G 4G ATT White
Or 2x Ipad 3 64G ATT White
建议交换比率 (required):
1:1 + $20 (32G ATT White)
1:1 + $80 (64G ATT White)
邮寄方式要求:
each pay his own
买卖双方谁承担邮寄损失(required if not code only):
default
其它补充说明:
广告的有效期:
till got
我的联系方式:
PM
单张面值:
物品来源 (required for ALL cards!): |
|
d*****n
发帖数: 684 | 37 广告标题:
2x Ipad 3 32G 4G ATT Black for White
我现有的物品:
2x Ipad 3 32G 4G ATT Black
我想要的物品:
2x Ipad 3 32G 4G ATT White
Or 2x Ipad 3 64G ATT White
建议交换比率 (required):
1:1 + $20 (32G ATT White)
1:1 + $80 (64G ATT White)
邮寄方式要求:
each pay his own
买卖双方谁承担邮寄损失(required if not code only):
default
其它补充说明:
广告的有效期:
till got
我的联系方式:
PM
单张面值:
物品来源 (required for ALL cards!): |
|
d*****n
发帖数: 684 | 38 广告标题:
2x Ipad 3 32G 4G ATT Black for White
我现有的物品:
2x Ipad 3 32G 4G ATT Black
我想要的物品:
2x Ipad 3 32G 4G ATT White
Or 2x Ipad 3 64G ATT White
建议交换比率 (required):
1:1 + $20 (32G ATT White)
1:1 + $80 (64G ATT White)
邮寄方式要求:
each pay his own
买卖双方谁承担邮寄损失(required if not code only):
default
其它补充说明:
广告的有效期:
till got
我的联系方式:
PM
单张面值:
物品来源 (required for ALL cards!): |
|
y*******n
发帖数: 237 | 39 想卖的物品:
6 xIPAD2 (4x32gb wifi white + 2x16G3G white + 2xsmart covers)
这6个周六可以drop, 可能明天还有新的.
单张面值:
you known
可接受价格(必须明码标价！):
4xipad2 32gb wifi white $730/each
2xipad2 16gb 3G+wife white $845/each
2xsmart covers $50/each
物品新旧要求:
new IN HAND
邮寄方式要求:
YL
买卖双方谁承担邮寄损失(Required if not code only):
default
付款方式说明:
BOA
其他补充说明:
广告的有效期:
物品来源(Required for All Cards!):
bb+apple
我的联系方式:
pm
Warranty期限:
能否证明是合法的一手卡?(Required for All Cards!):
YES
WITH RECEIPT
state and zip
OR |
|
b*********s
发帖数: 229 | 40 二手交易风险自负！请自行验证是否合法和一手卡！:
我想卖的物品:
iPad 2 Wifi 32g, 64g WHITE
单张面值:
32gb wifi, white x9 @ $800 ea
64gb, wifi, white x2 @ $900 ea
可接受价格(必须明码标价！):
32gb wifi, white x9 @ $800 ea
64gb, wifi, white x2 @ $900 ea
物品新旧要求:
new in hand, sealed
邮寄方式要求:
up to you
买卖双方谁承担邮寄损失(Required if not code only):
default
付款方式说明:
non cc pp
其他补充说明:
Items are in Austin TX. Local preferred. If so, cash only. thanks.
广告的有效期:
物品来源(Required for All Cards!):
apple store
我的联系方式:
bbs mail
Warranty期限:
能否证明是合法的一手卡?(Required for All... 阅读全帖 |
|
d*****n
发帖数: 684 | 41 广告标题:
2x Ipad 3 32G 4G ATT Black for White
我现有的物品:
2x Ipad 3 32G 4G ATT Black
我想要的物品:
2x Ipad 3 32G 4G ATT White
Or 2x Ipad 3 64G ATT White
建议交换比率 (required):
1:1 + $20 (32G ATT White)
1:1 + $80 (64G ATT White)
邮寄方式要求:
each pay his own
买卖双方谁承担邮寄损失(required if not code only):
default
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广告的有效期:
till got
我的联系方式:
PM
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d*****n
发帖数: 684 | 42 广告标题:
2x Ipad 3 32G 4G ATT Black for White
我现有的物品:
2x Ipad 3 32G 4G ATT Black
我想要的物品:
2x Ipad 3 32G 4G ATT White
Or 2x Ipad 3 64G ATT White
建议交换比率 (required):
1:1 + $20 (32G ATT White)
1:1 + $80 (64G ATT White)
邮寄方式要求:
each pay his own
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default
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till got
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u********u
发帖数: 8196 | 43 二手交易风险自负！请自行验证是否合法和一手卡！:
我想卖的物品:
ipad air wifi white 16g & ipad mini white 16g
单张面值:
?
可接受价格(必须明码标价！):
ipad air wifi white $425*2
ipad mini white @250*2 MD531E/A
+ your label
物品新旧要求:
new
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your label
买卖双方谁承担邮寄损失(Required if not code only):
before drop off me after you
付款方式说明:
BOA
bill pay
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我的联系方式:
mitbbs
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state and zip: |
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b**********5
发帖数: 7881 | 44 【 以下文字转载自 NewYork 讨论区 】
发信人: beefcurtain5 (beefcurtain5), 信区: NewYork
标 题: now the liberals are complaining the fed is too white (转载)
发信站: BBS 未名空间站 (Thu May 12 13:14:17 2016, 美东)
发信人: beefcurtain5 (beefcurtain5), 信区: Stock
标 题: now the liberals are complaining the fed is too white
发信站: BBS 未名空间站 (Thu May 12 13:14:05 2016, 美东)
Democratic presidential front-runner Hillary Clinton said she would support
changes to the top ranks of the Federal Reserve, an issue recently
championed by progressive ... 阅读全帖 |
|
s********t
发帖数: 930 | 45 white nationalists看病拒绝华人医生，要求必须是白人
http://www.cnn.com/2017/08/19/us/asian-american-doctor-white-nationalists-race-cnntv/index.html
Dr. Esther Choo is an Asian-American emergency room physician who has
practiced medicine for more than a decade. Yet, she says, a few times a year
, a patient will refuse to let her treat them. Solely because of her race.
Choo, who works in Oregon, first shared her experience of dealing with
racist patients who shun her care in a viral Twitter thread last Sunday.
... 阅读全帖 |
|
p******o
发帖数: 2682 | 46 New Format for Blue-White Game
Receiver Justin Brown of the offense. By Mark Brennan
FightOnState.com
Posted Apr 19, 2012
Share on twitterShare on facebook| More Sharing ServicesMore
It will be offense vs. defense in Penn State's spring scrimmage at Beaver
Stadium Saturday. Get the lowdown on the format and scoring system right
here.
Penn State's annual Blue-White Game will have a completely different look
under first-year coach Bill O'Brien.
Under former coach Joe Paterno and his staff, the ... 阅读全帖 |
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g******n
发帖数: 53185 | 47 Weimar White 是一位美国化学家兼钱币收藏家。他的收藏方向是美国卡森市造币厂出
产的各类银币，因此对银币的化学包浆有着深入的研究。他出版了一本名为"Coin
Chemistry"（钱币化学）的书，其中收集了他在过去在各种钱币杂志上发表的文章。现
将他的一些研究成果与泉友分享。
1. 包浆（即银币变色，英文为 toning 或 tarnish）是银币表面的硫化腐蚀过程。
包浆的化学成分是硫化银。包浆的颜色取决于硫化银的厚度，50 毫微米厚的硫化银呈
黄色，110 毫微米厚的硫化银呈蓝色，再厚便呈黑色。而金色、红色和紫色包浆的硫化
银厚度介乎于黄色和蓝色之间。各种颜色的不同混合可能产生其它颜色，如黄色和蓝色
混合会产生绿色。黑色是硫化的“终极颜色”。
2. 包浆是一个演进的过程，颜色会随着硫化银厚度的增加从黄到黑逐步变化。要保
持五彩包浆必须停止进一步硫化的过程。否则五彩包浆会逐步变成黑色。
3. 硫化银包浆会腐蚀银币的表面，正如铁锈会腐蚀铁的表面一样。如果用洗银水洗
去包浆，银币便会略轻一些。在一枚卡森市造币厂铸造的 25 美分银币上，黄色包浆的
重量为 26... 阅读全帖 |
|
g******n
发帖数: 53185 | 48 Weimar White 是一位美国化学家兼钱币收藏家。他的收藏方向是美国卡森市造币厂出
产的各类银币，因此对银币的化学包浆有着深入的研究。他出版了一本名为"Coin
Chemistry"（钱币化学）的书，其中收集了他在过去在各种钱币杂志上发表的文章。现
将他的一些研究成果与泉友分享。
1. 包浆（即银币变色，英文为 toning 或 tarnish）是银币表面的硫化腐蚀过程。
包浆的化学成分是硫化银。包浆的颜色取决于硫化银的厚度，50 毫微米厚的硫化银呈
黄色，110 毫微米厚的硫化银呈蓝色，再厚便呈黑色。而金色、红色和紫色包浆的硫化
银厚度介乎于黄色和蓝色之间。各种颜色的不同混合可能产生其它颜色，如黄色和蓝色
混合会产生绿色。黑色是硫化的“终极颜色”。
2. 包浆是一个演进的过程，颜色会随着硫化银厚度的增加从黄到黑逐步变化。要保
持五彩包浆必须停止进一步硫化的过程。否则五彩包浆会逐步变成黑色。
3. 硫化银包浆会腐蚀银币的表面，正如铁锈会腐蚀铁的表面一样。如果用洗银水洗
去包浆，银币便会略轻一些。在一枚卡森市造币厂铸造的 25 美分银币上，黄色包浆的
重量为 26... 阅读全帖 |
|
