 |
 |
 |
 |
 |
 |
||
 |
 |
 |
 |
 |
| 2 | 1/1 | 返回列表 |
| 查看: 361 | 回復(fù): 1 | |||
myIDname木蟲 (著名寫手)
人民大會(huì)堂首席清潔工
|
[交流]
2012/11/02 news of the week@SCIENCE ----------報(bào)道一 已有1人參與
|
|
感覺還是每篇報(bào)道開一個(gè)貼更清楚些，相關(guān)討論也都是跟在這片報(bào)道下面的。不知道這么做會(huì)不會(huì)讓版面看起來有點(diǎn)亂，看起來滿版的科研快訊，還是都貼到一個(gè)帖子下面好，大家給點(diǎn)意見。 Tucson, Arizona 1 Smooth Mirror for Giant Telescope 巨型望遠(yuǎn)鏡的光滑（很別扭，是光滑的意思么）鏡片 Twenty tons of glass—that’s what went into casting the first of seven mirrors that comprise the light-collecting area of the 25-meter Giant Magellan Telescope (GMT). The 8.4-meter-diameter, single-piece mirror was finished last week. The GMT will peer at the heavens from a remote Chilean mountaintop when it is ready for operations by the end of this decade. 20噸重的玻璃僅僅鑄造了一塊鏡片！25米大的巨型麥哲倫望遠(yuǎn)鏡（GMT）需要7塊鏡片來組成它的聚光區(qū)，這塊上周完工直徑達(dá)8.5米的鏡片就是其中之一。在2020年之前GMT開始履行使命，屆時(shí)它將會(huì)在遙遠(yuǎn)的智利山上凝望著太空。 The mirror was cast using a technique pioneered by University of Arizona astronomer Roger Angel. It has been polished to such a high degree of precision that any surface aberrations lie within a margin onetwentieth the wavelength of light. 鑄造該鏡片的時(shí)候，采用了亞利桑那大學(xué)天文學(xué)家Roger Angel首先提出來的技術(shù)。鏡片的拋光度被控制到非常精密的程度：任何面上的像差都小于光波長的1/20。 Six other such mirrors will be fashioned over the next few years. Assembled into a floral design, they will collect enough light to produce images of unprecedented sharpness, helping researchers answer fundamental questions in astrophysics, planetary science, and cosmology. 其余6面鏡片會(huì)在未來幾年內(nèi)完工，到時(shí)候組裝成花瓣結(jié)構(gòu)的鏡片組，能聚集足夠的光，從而產(chǎn)生圖像能有前所未有的銳度。這將幫助研究者解答一些在天文學(xué)，行星學(xué)和宇宙學(xué)方面的重大問題。 Completion of this First mirror should bolster ongoing efforts to raise funds for the $1 billion project（如何翻譯）, which has so far received commitments of about $300 million from its various partners. 這次第一面鏡片的完工無疑會(huì)促使大家更加努力地去籌集10億美元的項(xiàng)目資金。到目前為止，項(xiàng)目合作各方已經(jīng)承諾的援助資金大約有3億美元。 [ Last edited by myIDname on 2012-11-6 at 10:15 ] |
回復(fù)此樓» 猜你喜歡
333求調(diào)劑
已經(jīng)有10人回復(fù)
-
307求調(diào)劑
已經(jīng)有3人回復(fù)
-
考研化學(xué)308分求調(diào)劑
已經(jīng)有4人回復(fù)
-
298求調(diào)劑
已經(jīng)有7人回復(fù)
-
263求調(diào)劑
已經(jīng)有5人回復(fù)
-
276求調(diào)劑。有半年電池和半年高分子實(shí)習(xí)經(jīng)歷
已經(jīng)有6人回復(fù)
-
求調(diào)劑材料學(xué)碩080500，總分289分
已經(jīng)有21人回復(fù)
-
北科281學(xué)碩材料求調(diào)劑
已經(jīng)有8人回復(fù)
-
08工學(xué)調(diào)劑
已經(jīng)有9人回復(fù)
-
291 求調(diào)劑
已經(jīng)有4人回復(fù)
 |
2樓2012-11-06 10:15:44
相關(guān)版塊跳轉(zhuǎn)
我要訂閱樓主 myIDname 的主題更新
| 2 | 1/1 | 返回列表 |
| 最具人氣熱帖推薦 [查看全部] | 作者 | 回/看 | 最后發(fā)表 | |
|---|---|---|---|---|
|
[考研] 一志愿華中農(nóng)業(yè)071010，總分320求調(diào)劑 +5 | 困困困困坤坤 2026-03-20 | 6/300 |
|
|---|---|---|---|---|
|
|
[考研] 287求調(diào)劑 +8 | 晨昏線與星海 2026-03-19 | 9/450 |
|
|
|
[考研] 一志愿中南化學(xué)（0703）總分337求調(diào)劑 +9 | niko- 2026-03-19 | 10/500 |
|
|
|
[考研] 一志愿北京化工大學(xué)070300 學(xué)碩336求調(diào)劑 +5 | vv迷 2026-03-21 | 8/400 |
|
|
[考研] 求調(diào)劑 +5 | Zhangbod 2026-03-21 | 7/350 |
|
|
|
[考研]
 一志愿東華大學(xué)控制學(xué)碩320求調(diào)劑
+3
|
Grand777 2026-03-21 | 3/150 |
|
|
|
[考研] 求調(diào)劑 +3 | 13341 2026-03-20 | 3/150 |
|
|
|
[考研] 070300化學(xué)319求調(diào)劑 +7 | 錦鯉0909 2026-03-17 | 7/350 |
|
|
|
[考研] 265求調(diào)劑 +9 | 梁梁校校 2026-03-17 | 9/450 |
|
|
|
[考研] 一志愿華中科技大學(xué)，080502，354分求調(diào)劑 +5 | 守候夕陽CF 2026-03-18 | 5/250 |
|
|
|
[考研] 274求調(diào)劑 +10 | S.H1 2026-03-18 | 10/500 |
|
|
|
[考研]
材料與化工 322求調(diào)劑
+4
|
然11 2026-03-19 | 4/200 |
|
|
|
[考研] 一志愿蘇州大學(xué)材料求調(diào)劑，總分315（英一） +5 | sbdksD 2026-03-19 | 5/250 |
|
|
|
[考研] A區(qū)線材料學(xué)調(diào)劑 +5 | 周周無極 2026-03-20 | 5/250 |
|
|
|
[考研] 081700化工學(xué)碩調(diào)劑 +3 | 【1】 2026-03-16 | 3/150 |
|
|
|
[考研] 085601材料工程專碩求調(diào)劑 +10 | 慕寒mio 2026-03-16 | 10/500 |
|
|
|
[考研] 材料與化工求調(diào)劑 +7 | 為學(xué)666 2026-03-16 | 7/350 |
|
|
|
[考研] 085600材料與化工求調(diào)劑 +6 | 緒幸與子 2026-03-17 | 6/300 |
|
|
|
[考研] 【同濟(jì)軟件】軟件（085405）考研求調(diào)劑 +3 | 2026eternal 2026-03-18 | 3/150 |
|
|
|
[考研] 085601求調(diào)劑 +4 | Du.11 2026-03-16 | 4/200 |
|