Fw: [新聞] 科學家們發現光的隱藏屬性

看板Physics作者ienari (jimmy)時間8年前 (2016/05/19 00:23)推噓1(1推 0噓 1→)

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※ [本文轉錄自 Gossiping 看板 #1NF7hPTF ] 作者: eyb602 (把昨天都作廢) 看板: Gossiping 標題: [新聞] 科學家們發現光的隱藏屬性時間: Wed May 18 22:23:13 2016 1.媒體來源: ※ 例如蘋果日報、奇摩新聞 CNN 2.完整新聞標題: ※ 標題沒有寫出來 ---> 依照板規刪除文章 Researchers illuminate the hidden properties of light 3.完整新聞內文: ※ 社論特稿都不能貼! 違者退文，貼廣告也會被退文喔! Researchers illuminate the hidden properties of light By Euan McKirdy, CNN Updated 0715 GMT (1515 HKT) May 18, 2016 Story highlights "We thought it was impossible for a photon to send you halfway round," scientist Paul Eastham says Light, it seems, doesn't necessarily conform to the rules we thought it did (CNN)When it comes to understanding light, it turns out we're more in the dark than we thought. Researchers in Ireland have reported that they discovered a "new form" of light, and, in a press release, say that their discovery "will impact our understanding of the fundamental nature of light." The discovery was published in the scientific journal "Science Advances." The recent discovery by physicists at Ireland's Trinity College Dublin could alter our established thinking of how a key aspect of light -- its angular momentum -- is understood. Angular momentum is a measurement of how something rotates around its own axis , which light is known to do. Essentially, as photons -- tiny particles of light -- travel through space, they twist and turn around their axes. Previously it was thought that light's angular momentum was a constant, but the team at Trinity discovered that under certain conditions, it only spins around its axis half as much as it should. Light, it seems, doesn't necessarily conform to the rules we thought it did. This could mean big things, the researchers say. "It's a bit like a tiny, light merry-go-round at a playground. It goes round and round, which is more or less they way people understood light to work. We thought it was impossible for a photon to send you halfway round, but it turns out, it's not," lead researcher Paul Eastham told CNN. "What I think is so exciting about this result is that even this fundamental property of light, that physicists have always thought was fixed, can be changed," he said. "But this science is in a very early stage -- the next stage is to work out the consequences, how this could be used in everyday life," Eastham said. Eastham suggested that the discovery could have implications for telecommunications and privacy. The nature of these newly found photons are by nature harder to crack, meaning they could deliver data without such a high threat of a third party snooping. It could be used in fiber-optic cables to improve speed and security. See the world through the eyes of a scientist http://cnn.com/2016/03/17/tech/science-on-instagram/index.html 'Breakthrough' for physics The research was the product of collaboration between the university's School of Physics and its Center for Research on Adaptive Nanostructures and Nanodevices (CRANN). Director of CRANN Stefano Sanvito called the work "fundamental scientific research that challenges our understanding of light. "The topic of light has always been one of interest to physicists, while also being documented as one of the areas of physics that is best understood. This discovery is a breakthrough for the world of physics and science alike." Data from Large Hadron Collider could herald new particle http://cnn.com/2016/03/10/world/new-particle-lhc-cern-feat/index.html CNN's Angela Dewan contributed to this report =======================不負責任翻譯分隔線============================== (CNN)－每當我們更了解光，卻發現我們仍深處黑暗。愛爾蘭的研究員發現了光的一種"新型態"，在隨後的新聞稿中聲稱他們的發現"將會影響我們對光的基本認知"。這項發現被發表在科學期刊"Science Advances"中。這份來自愛爾蘭都柏林聖三一大學物理學家的最新發現可能會顛覆我們對光的一個重要概念-角動量-的認知。角動量是一個物體對自身軸線旋轉的測量值，這是光所被需要知道的事。事實上，當光子 --光的微小粒子--穿越空間時，它們會對自身的軸線作旋轉和扭曲。先前認為光的角動量是一個定值，但都柏林大學的團隊發現在某種環境下，光子最多只會旋轉一半而已。光，似乎並不一定符合我們所認知的一些規則。這可能意味著大事情,研究員們如此說道. "這有點像超小的旋轉木馬。它一直轉一直轉，讓人們或多或少瞭解光是如何運作的。我們認為光子只轉一半是不可能的，但結果，它就是發生了。"主要研究員Paul Eastham 在CNN說道。 "這個光性質的結果真的是令人太興奮了，物理學家們以為的既定事實是可以被改變的。" 他說。 "但這項研究還是在非常早期的階段，下一步是實踐這份結果，要怎麼將其應用在我們的日常生活。"Eastham說道。 Eastham認為這個發現可以對通訊和隱私科技有所幫助。這些新發現的光子性質本質上是難以被破解的，代表說資料傳輸時可能不會再受到第三方監聽的威脅了。也可能用在改善光纖纜線的速度及安全性。 ========================================================== 大概就醬其實也沒說什麼內容有物理性的能解釋下嗎? 4.完整新聞連結 (或短網址): ※ 當新聞連結過長時，需提供短網址方便網友點擊 http://goo.gl/rSsaUO 5.備註: ※ 一個人一天只能張貼一則新聞，被刪或自刪也算額度內，超貼者水桶，請注意光子在某種狀況下，角動量只會繞軸轉一半 <--重點部分的翻譯跨攏謀有人能解釋一下嗎? 話說發現隱藏屬性 GM會不會抓啊? -- 不要因為有配著偉人照片，就隨便相信網路上流傳的名言佳句。──胡適不要相信胡適。──愛因斯坦 -- ※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 101.12.182.9 ※ 文章網址: https://www.ptt.cc/bbs/Gossiping/M.1463581401.A.74F.html

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