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C粉太nb了

C粉太nb了# PhotoGear - 摄影器材

v*e2011-04-12 07:04

1 楼

【以下文字转载自 Military2 讨论区】
发信人: vuse (vuse), 信区: Military2
标题: 日合成世界上最坚硬的金刚石直径超过一厘米(图)
发信站: BBS 未名空间站 (Thu Dec 23 16:14:24 2010, 美东)
日本合成世界上最坚硬的金刚石直径超过一厘米(图)
据英国《每日电讯报》12月20日报道，日本科学家近日成功合成了世界上最坚硬的
金刚石，其直径超过1厘米，与其
合作的公司称力争最快明年投产。
这种圆柱形的金刚石是日本爱媛大学研究人员与住友电器工业公司合作的成果，被
命名为“媛石”，取自“爱媛”。
研究人员入船哲男介绍说，媛石是目前世界上最坚硬的人工金刚石，比普通金刚石
坚硬很多，因此可以应用于诸多工业
活动当中。“嫒石可以帮助人们进一步了解在地球深处高压高温条件下形成的碳元素单
质晶体；同时，作为一种工业用品，
它的寿命也比普通金刚石长好几倍。”
该研究小组曾在2003年首次合成了直径约1毫米的金刚石，而媛石则是在此基础上
发展而来。自从去年3月引进大型高
压合成设备后，研究人员尝试了一系列实验，开始挑战合成更大的金刚石。
金刚石是已知的硬度最高的天然矿物，由于硬度高以及导热性良好，因此广泛用于
工业生产。被开采出来的金刚石中有
大约80%无法加工成钻石，因而被用于工业活动。

v*n2011-04-12 07:04

2 楼

竟然都给买光了!!!

n*o2011-04-12 07:04

3 楼

拿这个取代钻戒吧～

h*e2011-04-12 07:04

4 楼

http://completed.shop.ebay.com/Digital-Cameras-/31388/i.html?LH
真他吗夸张……
我记得我说过那谁的1Ds II 1650卖便宜了的。。。。

v*e2011-04-12 07:04

5 楼

已经有公司在卖了
http://www.chatham.com/Gallery.php
The Chatham Story
In the late 1920's a young boy followed his dreams in what was to become,
one of the world's preeminent crystal growers. Carroll Chatham took his
avid interest in chemistry and pursued his dream by endeavoring to duplicate
nature's process to create a diamond. Chatham was intrigued by chemistry
and created a lab in his family's garage at the young age of 12. He learned
by trial and error, making fireworks and smoke bombs for his amusement. He
read of failed attempts by Henri Moissan to make diamonds, and replicated
his 1890's experiments.
One attempt resulted in an explosion that rattled his San Francisco
neighborhood, as well as the police. To calm the police and his parents, he
shifted his focus to growing emerald crystals, hoping a crystal formation
would not require immense pressure. Many years passed with nothing to show
for his on and off again attempts to duplicate what happened in the earth's
crust millions of years ago.
In 1931, Chatham entered college at the California Institute of Technology,
leaving his latest efforts in his family's garage still running in his
absence. As fate would have it, Chatham's father turned off the power supply
to his science project. This simple action caused his emerald crystals to
grow in the crucible, and the legacy was born. It took Carroll another 3
years to understand why the emeralds formed! When he did, he never had
another failure.
After emeralds in 1938, rubies, alexandrites, blue sapphires, and orange
sapphires all came to fruition over many decades of research in the hands of
Carroll Chatham. A few years after his passing in 1983, his lifelong dream
of diamond cultivation finally became a reality for his son, Tom.
Today, Chatham is still recognized as the leader of created gemstones. The
company's unbeatable Lifetime Warranty and Certificate of Authenticity
assure reliability and long-term value. Whether it's the latest fashion
trends in our finished jewelry or the brilliance of our loose stones,
Chatham enthusiasts around the world agree: Chatham is Smart. Beautiful.
Real.

【在 n****o 的大作中提到】

: 拿这个取代钻戒吧～

p*z2011-04-12 07:04

6 楼

我有我有，还有人要不

v*n2011-04-12 07:04

7 楼

是啊, 我那个上个月中出的才1699, EX+啊, 5555.

LH_Complete=1&_trkparms=65%253A13%257C66%253A2%257C39%253A1&rt=nc&_nkw=canon
+1ds+ii&_cat
ref=1&_dmpt=Digital_Cameras&_sticky=1&_trksid=p3286.c0.m14&_sop=16&_sc=1

【在 h*******e 的大作中提到】

: http://completed.shop.ebay.com/Digital-Cameras-/31388/i.html?LH
: 真他吗夸张……
: 我记得我说过那谁的1Ds II 1650卖便宜了的。。。。

a*l2011-04-12 07:04

8 楼

借问现在状态良好的1d4是什么价位？

r*n2011-04-12 07:04

9 楼

阿婆被毒到了。。。。

【在 a********l 的大作中提到】

: 借问现在状态良好的1d4是什么价位？

a*l2011-04-12 07:04

10 楼

别幸灾乐祸了，赶紧报药价。

【在 r*********n 的大作中提到】

: 阿婆被毒到了。。。。

r*n2011-04-12 07:04

11 楼

俺也不知道啊，俺也等着看呢。大概1个月前canon refurbished 10%off的时候好像是
3800多就可以拿下，但是等我想下单子的时候毛都没剩下一根了.。。。。

【在 a********l 的大作中提到】

: 别幸灾乐祸了，赶紧报药价。

x*32011-04-12 07:04

12 楼

LH_Complete=1&_trkparms=65%253A13%257C66%253A2%257C39%253A1&rt=nc&_nkw=can
on+1ds+ii&_catref=1&_dmpt=Digital_Cameras&_sticky=1&_trksid=p3286.c0.m14&_
sop=16&_sc=1
HAHA,
It was me, but 1650 net to me at FM, and that one was 107K shutter, and no
box.
i guess I really can not ask more, right?

【在 h*******e 的大作中提到】

: http://completed.shop.ebay.com/Digital-Cameras-/31388/i.html?LH
: 真他吗夸张……
: 我记得我说过那谁的1Ds II 1650卖便宜了的。。。。

a*l2011-04-12 07:04

13 楼

还是太贵了。听说佳能的refurbs质量差别很大，有些跟全新的一样，有些像被严重虐
待过。
其实我不要1d4的对焦和连拍，7d这些都够了。1d4的像素密度低（接近全幅了吧），成
像更好，高感很
好，不知道这些理由是否值那么多钱。

【在 r*********n 的大作中提到】

: 俺也不知道啊，俺也等着看呢。大概1个月前canon refurbished 10%off的时候好像是
: 3800多就可以拿下，但是等我想下单子的时候毛都没剩下一根了.。。。。

v*n2011-04-12 07:04

14 楼

1d3呗, 比妻弟贵点.

【在 a********l 的大作中提到】

: 还是太贵了。听说佳能的refurbs质量差别很大，有些跟全新的一样，有些像被严重虐
: 待过。
: 其实我不要1d4的对焦和连拍，7d这些都够了。1d4的像素密度低（接近全幅了吧），成
: 像更好，高感很
: 好，不知道这些理由是否值那么多钱。

a*l2011-04-12 07:04

15 楼

据说四代的高感比三代有很大进步，而且像素高了不少便于裁图。

【在 v****n 的大作中提到】