久久亚洲国产成人影院-久久亚洲国产的中文-久久亚洲国产高清-久久亚洲国产精品-亚洲图片偷拍自拍-亚洲图色视频

 
 
 

How Military Research Finds Its Way to Everyday Life

VOA 2015-12-10 09:29

 

Sometimes simple scientific advances in one field can have value far beyond their intended use. Many of these advances can change the world and possibly help solve our biggest problems. One example is 75-years-old this year and was made at the onset of the World War II.

How Military Research Finds Its Way to Everyday Life

Get Flash Player

Many people around the world use a microwave oven every day, not knowing that a crucial part of it was once a top military secret.

In 1940, the situation in Europe was desperate. German forces were preparing for the invasion of Britain while U-boats were decimating the convoys bringing supplies from the United States.

In September of that year, a high-level British scientific delegation traveled to the U.S. to ask for help in manufacturing several secret inventions, including a revolutionary vacuum tube that could create microwave emissions, essential for building more efficient radars.

According to Larry Schuette of the U.S. Office of Naval Research, the result was a revolutionary breakthrough.

"The advantage of microwave radar, which allowed the use of parabolic antennas that we see today, fundamentally changed radar from the lower frequencies and all the advantages that going to the higher frequency provided," Schuette said.

A new tube called cavity magnetron enabled radar operators to distinguish between individual aircraft as well as submerged submarines, helping to change the military situation.

But just as it changed the course of the war, the magnetron soon changed the course of cooking around the world, becoming the primary component of today's microwave oven.

A group of British, American and Canadian civil and military scientists recently gathered in Washington to commemorate the mission that brought military secrets to the U.S. They reconfirmed their commitment to cooperation in search for new technologies with potential application to everyday life.

Rear Admiral Mathias Winter, Chief of Naval Research, said that scientists are collaborating in many areas, often just to improve efficiency.

"We're also working in the photonics and high energy, energy density and directed energy research areas, not only for weapons but for energy storage, energy engagement for our ships, for our shore facilities, to bring ourselves to a more efficient footprint."

Hopefully, one of those inventions will change the course of global warming, the same way the cavity magnetron impacted the course of World War II.

Vocabulary

parabolic:拋物線的

antenna:[電訊] 天線

來源:VOA

編輯:丁一

 
中國日報網英語點津版權說明:凡注明來源為“中國日報網英語點津:XXX(署名)”的原創作品,除與中國日報網簽署英語點津內容授權協議的網站外,其他任何網站或單位未經允許不得非法盜鏈、轉載和使用,違者必究。如需使用,請與010-84883561聯系;凡本網注明“來源:XXX(非英語點津)”的作品,均轉載自其它媒體,目的在于傳播更多信息,其他媒體如需轉載,請與稿件來源方聯系,如產生任何問題與本網無關;本網所發布的歌曲、電影片段,版權歸原作者所有,僅供學習與研究,如果侵權,請提供版權證明,以便盡快刪除。

中國日報網雙語新聞

掃描左側二維碼

添加Chinadaily_Mobile
你想看的我們這兒都有!

中國日報雙語手機報

點擊左側圖標查看訂閱方式

中國首份雙語手機報
學英語看資訊一個都不能少!

關注和訂閱

本文相關閱讀
人氣排行
熱搜詞
 
 
精華欄目
 

閱讀

詞匯

視聽

翻譯

口語

合作

 

關于我們 | 聯系方式 | 招聘信息

Copyright by chinadaily.com.cn. All rights reserved. None of this material may be used for any commercial or public use. Reproduction in whole or in part without permission is prohibited. 版權聲明:本網站所刊登的中國日報網英語點津內容,版權屬中國日報網所有,未經協議授權,禁止下載使用。 歡迎愿意與本網站合作的單位或個人與我們聯系。

電話:8610-84883645

傳真:8610-84883500

Email: languagetips@chinadaily.com.cn

主站蜘蛛池模板: 国产成人精品午夜在线播放 | 真人一级毛片国产 | 美国做受三级的视频播放 | 国产男女在线观看 | 亚洲国产成人在人网站天堂 | 中国一级毛片免费观看 | 亚洲欧美日本在线 | 五月六月伊人狠狠丁香网 | 手机看片自拍自自拍日韩免费 | 玖玖玖精品视频免费播放 | 国产高清美女一级a毛片久久 | 国产在线一区观看 | 免费一级视频在线播放 | 日本一极毛片兔费看 | 精品日本一区二区三区在线观看 | 国产成人综合欧美精品久久 | 九九视频在线播放 | 日本久久99 | 久久经典免费视频 | 国产裸体美女视频全黄 | 成年人毛片网站 | 欧美性性性性性色大片免费的 | 9久re在线观看视频精品 | 精品国产成人三级在线观看 | 久久99久久99精品观看 | 欧美激情欧美狂野欧美精品免费 | 亚洲系列第一页 | 在线精品视频免费观看 | 久久99视频免费 | 国产精品色午夜视频免费看 | 久久99亚洲精品久久久久99 | 亚洲免费中文 | 中文毛片| 久久久久女人精品毛片 | 国产精品亚洲精品日韩已方 | 精品久久久久久久久久久久久久久 | 欧美一区二区三区免费高 | 国产一进一出视频网站 | a毛片久久免费观看 | 国产成人精品综合网站 | 国厂自拍|