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Device Gives New Meaning to the Idea of Power Walking

kira86 于2008-03-12发布 l 已有人浏览
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VOICE ONE:This is SCIENCE IN THE NEWS in VOA Special English. I'm Barbara Klein.VOICE TWO.And I'm Bob Dough
 

voice one:

this is science in the news in voa special english.  i'm barbara klein.

voice two.

and i'm bob doughty.  this week, we will tell about a device that makes electrical power from omething as simple as walking.  we will tell about a common disease many people have never heard of.  and, we report on a study linking all blue-eyed people in the world. 

(music)

voice one:

electrical devices could soon use power made by human energy.  scientists say they have developed an experimental device that produces electricity from the physical movement of a person walking.  a report on the device was published recently in science magazine.

max donelan is an assistant professor of kinesiology at simon fraser university in burnaby, british colombia.  he and other scientists in canada and the united states developed the device. 

mister donelan says the goal of the study was to store energy from walking in a way that can get electricity without having to increase effort.

voice two:

the device connects to a person's knee.  as the person walks, the device captures energy each time the person slows down.  to do this, the device assists with the slowing down movement of the leg.  the movements of the person walking push parts of a small machine that produces electricity.

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