资源新版在线天堂-桌下含校园污肉高h-坠落女教师-椎名由奈在线播放-六月色婷婷-六月丁香婷婷天天在线

食品伙伴網服務號
 
 
當前位置: 首頁 » 專業英語 » 英語短文 » 正文

經典背誦短文Scientific Theories

放大字體  縮小字體 發布日期:2007-12-04
核心提示:In science, a theory is a reasonable explanation of observed events that are related. A theory often involves an imaginary model that helps scientists picture the way an observed event could be produced. A good example of this is found in the kineti


    In science, a theory is a reasonable explanation of observed events that are related. A theory often involves an imaginary model that helps scientists picture the way an observed event could be produced. A good example of this is found in the kinetic molecular theory, in which gases are pictured as being made up of many small particles that are in constant motion. 

    A useful theory, in addition to explaining past observations, helps to predict events that have not as yet been observed. After a theory has been publicized, scientists design experiments to test the theory. If observations confirm the scientist’s predictions, the theory is supported. If observations do not confirm the predictions, the scientists must search further. There may be a fault in the experiment, or the theory may have to be revised or rejected. 

    Science involves imagination and creative thinking as well as collecting information and performing experiments. Facts by themselves are not science. As the mathematician Jules Henri Poincare said, “Science is built with facts just as a house is built with bricks, but a collection of facts cannot be called science any more than a pile of bricks can be called a house.” 

    Most scientists start an investigation by finding out what other scientists have learned about a particular problem. After known facts have been gathered, the scientist comes to the part of the investigation that requires considerable imagination. Possible solutions to the problem are formulated. These possible solutions are called hypotheses. 

    In a way, any hypothesis is a leap into the unknown. It extends the scientist’s thinking beyond the known facts. The scientist plans experiments, performs calculations, and makes observations to test hypotheses. Without hypothesis, further investigation lacks purpose and direction. When hypotheses are confirmed, they are incorporated into theories.

 

更多翻譯詳細信息請點擊:http://www.trans1.cn
 
關鍵詞: Scientific Theories
[ 網刊訂閱 ]  [ 專業英語搜索 ]  [ ]  [ 告訴好友 ]  [ 打印本文 ]  [ 關閉窗口 ] [ 返回頂部 ]
分享:

 

 
推薦圖文
推薦專業英語
點擊排行
 
 
Processed in 6.182 second(s), 1045 queries, Memory 3.9 M
主站蜘蛛池模板: 狠狠色狠狠色综合系列| 国产乱码伦人偷精品视频| 国产高清砖码区| 久久99精品视频| 日日噜噜噜夜夜爽爽狠狠图片| 亚洲 自拍 欧洲 视频二区| 365电影成人亚洲网在线观看| 国产高清亚洲| 免费女人光着全身网站| 小柔的性放荡羞辱日记| 99久久国产露脸精品国产吴梦梦 | 国产美女裸身网站免费观看视频| 久久久96| 偷拍自怕亚洲在线第7页| 找老女人泻火对白自拍| 国产高潮久久精品AV无码| 色中色入口2015| 丝袜美腿美女被狂躁在线观看| 少妇厨房愉情理9伦片视频 | 狠狠躁天天躁小说| 久久99re8热在线播放| 久久偷拍人| 蜜臀AV色欲A片无码一区| 男女边吃奶边做边爱视频| 青青草偷拍国产亚洲欧洲| 日韩一区二区三区免费体验| 手机看片一区二区| 亚洲精品不卡视频| 羽月希被黑人吃奶dasd585| 777ZYZ玖玖资源站最稳定网址| 99久久精品6在线播放| 超碰人人澡人人胔| 国产黄片毛片| 精品久久久久久无码人妻国产馆| 伦理 电影在线观看百度影音| 欧美巨大xxxx做受高清| 桃花色影院| 一个人在线观看免费视频| 99精品在线| 国产精品69人妻无码久久| 精品无码一区二区三区中文字幕|