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

您現在的位置: Language Tips> Easy English> Odd Question  
   
 





 
 
為什么肥皂泡會粘在一起?
Why do bubbles attract?
[ 2007-03-12 14:33 ]

你有沒有玩過吹肥皂泡的游戲?用吸管沾著肥皂水,吹出一長串的泡泡。這些泡泡在空中漂浮,撞在一起的時候常常會粘在一起,形成一大團泡泡。你知道泡泡為什么會粘在一起嗎?下面這篇短文就來告訴您這個秘密。

為什么肥皂泡會粘在一起?Surface tension!

Surface tension plays matchmaker in changing the status of a bubble from being single and solitary, to being part of a couple, or part of a multiple bubble group.

Uniting the bubbles temporarily destroys the surface tension's equilibrium, but once the surface tension joins the bubbles, it establishes a new balance.

The internal air pressure of the single, solitary bubble slightly exceeds that of the air surrounding it, because the surface tension reduces the bubble's surface as it squeezes it into its round shape. The product of being squeezed is a buoyant bubble, which rises to the top of the water's surface, because of its own inner water level. The bubble happily floats about, surrounded by uniform surface tension, guided by the momentum it picked up when being formed, and by changes in air pressure.

In turbulent water, the surface tension pulls the water's surface into a slope, or meniscus, the bubble rides the wave, and floats to its crest.

The meniscus, though it does not extend far into the water, manages to divert the bubbles' attention away from each other to objects, such as the sides of the bathtub, a human body, a rubber ducky, etc. Because the slope's extension range is short, the range of the force between the bubbles is also short.

Two or more bubbles drifting close to each other do not pass each other like ships in the night if their surface tensions overlap. This overlap destroys their equilibrium, and, to compensate for the low tension between the bubbles, the high surface tension surrounding them forces them together and restores their equilibrium. If, however, the surface tension forces them together too rapidly, we have a case of fatal attraction, as the two bubbles collide and burst.

Technically speaking, when the bubbles meet, they join at the point of the smallest surface area and, if they join in the middle of calm waters, the energy level they give off as they connect can be seen to the naked eye as circular ripples. Alone together at last.

(來源:coolquiz.com 英語點津 Annabel 編輯)

分享按鈕
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010-84883631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。
相關文章 Related Story
 
 
 
本頻道最新推薦
 
“口水戰”英文怎么說?
Radiation found in domestic vegetables
什么是“回收流動性”
調查:兩個女兒的家庭最和諧
難熬的“等待成年期”
翻吧推薦
 
論壇熱貼
 
原來國家的名字如此浪漫
Funny lines about getting married
關于工資的英語詞匯大全
關于職業裝的英語詞匯
余光中《尺素寸心》(節選)譯

 

主站蜘蛛池模板: 久久国产精品久久国产精品 | 在线毛片一区二区不卡视频 | 亚洲日本视频在线 | 在线视频免费观看a毛片 | 久久99视频免费 | 国产免费黄视频 | 亚洲精品99久久久久中文字幕 | 国产精品福利视频萌白酱 | 亚洲激情视频网站 | 高清不卡毛片 | 色婷婷久久综合中文久久蜜桃 | 亚洲视频在线网 | 精品视频在线免费播放 | 免费看黄网 | 在线观看亚洲视频 | 青青青青爽视频在线播放 | 国产成人免费在线观看 | 小屁孩和大人啪啪 | 国产三级在线 | 日韩精品亚洲人成在线观看 | 日韩精品亚洲人成在线观看 | 日本高清视频一区二区 | 日韩精品一区二区三区 在线观看 | 欧美亚洲日本韩国一级毛片 | 黄网在线观看免费网站台湾swag | 农村寡妇特一级毛片 | 波多野结衣免费视频观看 | 亚洲国产韩国一区二区 | 97在线免费观看视频 | 欧美成人精品大片免费流量 | 亚洲人成网站观看在线播放 | 久草在线视频网 | 美女一级视频 | 能直接看的一级欧美毛片 | 欧美三级久久 | 国产一区三区二区中文在线 | 香港日本韩国三级网站 | 国产成人丝袜网站在线观看 | 在线亚洲观看 | 国产午夜精品理论片免费观看 | 国产欧美另类 |