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SSS 2011-06-17

时间:2011-07-06 01:45来源:互联网 提供网友:gmeng   字体: [ ]
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    (单词翻译:双击或拖选)

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute.

How many times has it happened to you: you're sitting around watching a rerun of Friends and you think: Man, if only I could catch a whiff of that hazelnut mocchaccino they're all pretending to drink. Well, me neither.

But engineers have now developed a programmable, odor-emitting device that, like it or not, brings us one step closer to realizing the dream of smell-a-vision. Their design is described in the journal Angewandte Chemie.

TV tickles1 us with sight and sound. Why not smells? All you'd need is a box that would sit near the set and generate fragrances2 that match the images on screen: a woman's perfume or a hot apple pie. But how big would the device have to be to generate thousands of odors?

To keep the dimensions down, the scientists envision using a 100-by-100 grid3, so that just 200 on/off switches could unleash4 10,000 stored bouquets5. Which they say makes the whole thing "quite doable."

The question then becomes: why would anyone want to do it? Presumably there are some things that are best left unsmelled. Because a sound cue is perfectly6 sufficient to tell us where Archie Bunker or Al Bundy has just been.

Thanks for the minute. For Scientific American's 60-Second Science, I'm Karen Hopkin.


点击收听单词发音收听单词发音  

1 tickles b3378a1317ba9a2cef2e9e262649d607     
(使)发痒( tickle的第三人称单数 ); (使)愉快,逗乐
参考例句:
  • My foot [nose] tickles. 我的脚[鼻子]痒。
  • My nose tickles from the dust and I want to scratch it. 我的鼻子受灰尘的刺激发痒,很想搔它。
2 fragrances 2de1368e179b47e9157283bda10210b2     
n.芳香,香味( fragrance的名词复数 );香水
参考例句:
  • The bath oil comes in various fragrances. 这种沐浴油有不同的香味。
  • This toilet soap lathers so nicely and has several fragrances. 这种香皂起泡很多,并且有好几种香味。 来自《现代汉英综合大词典》
3 grid 5rPzpK     
n.高压输电线路网;地图坐标方格;格栅
参考例句:
  • In this application,the carrier is used to encapsulate the grid.在这种情况下,要用载体把格栅密封起来。
  • Modern gauges consist of metal foil in the form of a grid.现代应变仪则由网格形式的金属片组成。
4 unleash bjewz     
vt.发泄,发出;解带子放开
参考例句:
  • They hope to create allies to unleash against diseases,pests,and invasive species.他们希望创造出一些新群体来对付疾病、害虫和一些有侵害性的物种。
  • Changing water levels now at times unleash a miasma of disease from exposed sewage.如今,大坝不时地改变水位,从暴露的污水释放出了疾病瘴气。
5 bouquets 81022f355e60321845cbfc3c8963628f     
n.花束( bouquet的名词复数 );(酒的)芳香
参考例句:
  • The welcoming crowd waved their bouquets. 欢迎的群众摇动着花束。 来自《现代汉英综合大词典》
  • As the hero stepped off the platform, he was surrounded by several children with bouquets. 当英雄走下讲台时,已被几名手持花束的儿童围住了。 来自《简明英汉词典》
6 perfectly 8Mzxb     
adv.完美地,无可非议地,彻底地
参考例句:
  • The witnesses were each perfectly certain of what they said.证人们个个对自己所说的话十分肯定。
  • Everything that we're doing is all perfectly above board.我们做的每件事情都是光明正大的。
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