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(2018·河南实验中学模拟)
At the end of every year, Time picks the best 25 inventions that are “making the world better and smarter”. Here we have picked three of this year’s inventions that could be a part of your life in the near future.
The levitating(悬浮的) light bulb
This special light bulb was invented by U．S. artist and scientist Simon Morris. He got the idea of making a light bulb float from hoverboards(悬浮滑板), which he used to dream of having as a kid.
But the floating is not the most amazing part. The rejection force between the opposite ends of the magnets(磁铁), which were put in the bottom of the bulb and in the wooden base, does the job. What’s new here is a technology called induction(电磁感应). It allows the light bulb to get power from the base even they are not in contact.
Shoes that tie themselves
They’re not what you think—shoelaces that tie themselves in the way we tie them. Instead, the new shoes have small motors that control their laces. When you step into them, your feet will hit a sensor(传感器) in the
