60秒科学:气泡也繁殖,大泡变小泡(有声)

Bubbles. Big ones entertain children and tiny ones tickle¹ champagne² aficionados³. Even witches appreciate what they bring to a boiling cauldron. If you, too, are a bubble lover, then you’ll enjoy the latest bubble study published in the journal Nature. In it, scientists show that a bursting bubble can leave in its wake a ring of smaller bubbles, a finding that could have implications for disease transmission.

Bubbles are engaging because of their effervescence. Here one minute and then [popping sound] they’re gone. Or so we thought. What the new study shows, however, is that when bubbles break open on the surface of a liquid or solid, they don’t simply disappear.

Using high-speed videography, scientists observed surface bubbles as they burst. And they saw that when the skin of the bubble ruptures⁴, it retracts⁵. As this film folds in on itself, it can trap air, thus forming smaller, daughter bubbles. These daughters can then do the same, leaving behind a generation of grandbaby bubbles. And so on.

The tinier the bubbles, the greater their internal pressure. So when these babies blow, they can disperse⁶ their contents far and wide. Which is fine if you’re sipping⁷ champagne. But less welcome in a hot tub that might be full of cold and flu
 

1 tickle   

v.搔痒，胳肢；使高兴；发痒；n.搔痒，发痒

参考例句：

• Wilson was feeling restless. There was a tickle in his throat.威尔逊只觉得心神不定。嗓子眼里有些发痒。
• I am tickle pink at the news.听到这消息我高兴得要命。

2 champagne   

n.香槟酒；微黄色

参考例句：

• There were two glasses of champagne on the tray.托盘里有两杯香槟酒。
• They sat there swilling champagne.他们坐在那里大喝香槟酒。

3 aficionados   

n.酷爱…者，…迷( aficionado的名词复数 )； 爱看斗牛的人

参考例句：

• West Coast aficionados of postwar coffee-shop architecture(Karal Ann Marling) 西海岸战后咖啡店式建筑的狂热追随者（卡拉尔安马林） 来自互联网
• Clay developed a radical style which appalled boxing aficionados. 克莱发展出一种震惊拳击迷的全新风格。 来自互联网

4 ruptures   

n.（体内组织等的）断裂( rupture的名词复数 )；爆裂；疝气v.（使）破裂( rupture的第三人称单数 )；（使体内组织等）断裂；使（友好关系）破裂；使绝交

参考例句：

• Fault ruptures may consist of a single narrow main break. 断层破裂可能只包括单独一条狭窄的主裂隙。 来自辞典例句
• The dry seed ruptures and the green leaf uncurls. 干瘪的种子裂开了，卷曲的绿叶伸展了。 来自辞典例句

5 retracts   

v.撤回或撤消( retract的第三人称单数 )；拒绝执行或遵守；缩回；拉回

参考例句：

• A cat retracts its claws. 猫缩进它的爪子。 来自《现代英汉综合大词典》
• The split graph is given endomorphism images are retracts. 给出了任意自同态像图都是收缩核的分裂图的结构。 来自互联网

6 disperse   

vi.使分散；使消失；vt.分散；驱散

参考例句：

• The cattle were swinging their tails to disperse the flies.那些牛甩动着尾巴驱赶苍蝇。
• The children disperse for the holidays.孩子们放假了。

7 sipping   

v.小口喝，呷，抿( sip的现在分词 )

参考例句：

• She sat in the sun, idly sipping a cool drink. 她坐在阳光下懒洋洋地抿着冷饮。
• She sat there, sipping at her tea. 她坐在那儿抿着茶。