无线“电”让电线和电池成历史
  来源:网络
发布时间:2009年05月09日
查看次数:
温馨提示:双击屏幕可以自动滚屏,点击可以停止。电脑和手机访问效果相同
内容提要:高中英语教学交流网 http://zshunj.cn

不再需要电池和充电器,也不用再看着纠结在一起的电源线发愁。本周在拉斯维加斯的国际消费电子产品展会上展出的一项叫做“无线电源”的电力传输方式将可以通过空气向笔记本电脑、iPod以及其他便携式电子设备输送电力。只要身处开通了无线电源的房间或者把电子设备放在具备传输功能的桌子上,设备就会自动进入充电状态,手机突然没电的烦恼也将不复存在。“充电”之类的字眼也将从字典中消失。

  No more batteries, no more chargers and no more wire spaghetti. This is the future promised by "wireless power", a means of broadcasting electricity through the air to laptops, iPods and other gadgets without the need for cables and sockets.

  Untethered lighting, audio speakers and digital picture frames are expected to be among the first commercial products demonstrated in Las Vegas this week at the International Consumer Electronics Show, the world's biggest gadgets tradeshow.

  Experts believe this is just the beginning and that eventually wireless electricity - dubbed "WiTricity" by some - could do for battery life what WiFi did for the Internet. In a world without wires, laptop users in cafes and airport terminals would be inside an "electricity hotspot" and no longer have to delve past legs, bags and furniture in search of an awkwardly located socket.

  "You'd be able to buy a desk that charged any gadget placed on it, or power any PC you put on top," said James Holland, editor of gadgets website Electricpig.co.uk.

  "If each room had wireless power, you'd know that once you walked through the front door your mobile would start charging up - even while still in your bag or pocket. You'd never need to hunt for the right charger again."

  Among the companies showcasing the ambitious technology at CES is PowerBeam. Its system turns electricity into an invisible laser, then literally beams it, as heat, across the room to a solar cell that converts it back into electricity.

  David Graham, the co-founder of PowerBeam, said: "We're going to delete the word 'recharge' from the English dictionary. If your cell phone is recharging on your desk all day, you won't be thinking about it."

  The Silicon Valley company can currently use a laser to generate about 1.5 watts of power to a solar cell 10 meters away. This would be enough to power an electronic speaker or small LED lights, but not enough to operate a laptop, which requires an estimated 30 to 50 watts. However, Graham said that the technology could comfortably be scaled up.

  PowerBeam insists its laser does not pose a risk to users' health because it is simply moving heat from one place to another. Graham said that, if someone walked through the beam, it would shut down within a thousandth of a second, then restart once the path is clear. The technology also promises energy efficiency because it would only power products when needed.

 

  
·上一条:中国《环球时报》推出英文
·下一条:Obama visits
网站首页 成绩查询 用户中心
班级管理 填报志愿 亲子教育
英语科组 辅助教学 资源共享
美文妙乐 教学教案 双语新闻
论文相关 教学软件 广东高考
阳东一中 学习方法 高考资讯
2020年4月6日10:45:53
星期一 【第8周】

提示:本站所有的内容在电脑和微信查看的效果都是一样的。
电脑版网址http://www.zshunj.cn
http://www.yykz.net

关注本站微信公众平台方法
通过微信查找公众号
“高中英语教学交流网”
微信