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The nightmare of your mobile phone running out of power mid-conversation could be over, for researchers at the University of Wis
The nightmare of your mobile phone running out of power mid-conversation could be over, for researchers at the University of Wis
admin
2020-11-14
85
问题
The nightmare of your mobile phone running out of power mid-conversation could be over, for researchers at the University of Wisconsin have invented a device that, placed in a shoe, can collect and store the kinetic (运动的) energy from walking to power a mobile phone.
Scientists have been working for years on trying to make full use of the energy produced from walking, which theoretically is sufficient to power a light bulb, smart phone or even a laptop. But up to now their solutions have been too troublesome, or have not produced enough power to be useful. Now, engineering experts Tom Krupenkin and Ashley Taylor say they have come up with a technology which can produce as much as 10 watts of power.
After testing various liquids, the researchers chose a metal alloy (合金) called Galinstan. Used in thermometers, it is similar to mercury (水银) but not poisonous. Two small bags, placed in the bottom of a shoe, are filled with the fluid and generate a current whenever they are compressed by the foot’s up and down motion.
Transferring the energy from a device in a shoe to a phone in the hand presents an obvious obstacle. Rather than plugging a cable into a shoe, the Wisconsin researchers suggest installing a wireless transmitter in the heel. This could make radio contact with mobile phone base stations.
Professor Krupenkin said, " Humans were ’ very powerful energy-producing machines’ that could produce as much as a kilowatt of power while sprinting (快速短跑). "
A New Charging Device
Invented by: researchers at the University of Wisconsin
Function: collecting and storing energy from【B1】______to charge a mobile phone
Material: 【B2】______
Output: 【B3】______of power
Operating principle: Using two small bags to produce a current when people compressing them by the foot’s【B4】______motion. Then use【B5】______to transfer the energy from a device in a shoe to a mobile phone in the hand.
【B5】
选项
答案
a wireless transmitter
解析
细节理解题。根据第四段第二句可知。
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本试题收录于:
大学英语三级A级题库大学英语三级分类
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大学英语三级
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材料1:公交车司机王某在驾车的过程中突发脑溢血,乘务员为此不得不采取紧急刹车措施,导致公交车冲出道路,撞坏了公共道路上的围栏。但司机王某和乘务员并没有受到法律适用机关的处罚。材料2:1862年,英国衡平法院在审理霍尔罗艾德诉马歇尔的上诉案件中,明
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