This is the first Braille reader that uses magnets.“We found that today’s Braille readers are very difficult and expensive,” Feng said. “So, we decided to develop a user-friendly product, especially for young blind children from grades 1 to 3. Moreover, it only costs about 2,000 ...
There were postcards, souvenir magnets and keychains, and guidebooks to Dalmatia, so I could read about the sites I was being kept from seeing, in any of a dozen major tourist languages. They only thing missing was somewhere to sit. I didn’t really want to sit on the hard sandstone ...
Because needles were made of magnets. 相关知识点: 试题来源: 解析 【解析】语篇解读本文介绍了指南针的发明过程。人们起初用罗盘并非为了确定方向,而是为了风水和算命。答案解析1.C主旨大意题。综合全文可知,文章主要介绍指南针的发明过程,起初人们用罗盘是为了风水和算命,无意中才发现了罗盘有指方向的作用。干扰...
and magnets. Next, Hussam___a simple yet effective turbine (涡轮) using locally___materials. The turbine’s blades (叶片) were constructed from lightweight but strong materials to___the force of the wind. As the wind___these blades, it activated the turbine. With dreams of becoming an ...
The 'frustrated magnetism' arises when themagnetic momentsin a material (imagine little bar magnets which try to turn each other and line up north to south when you bring them together) are arranged in special geometries, like triangular nets. This scenario can make it hard for the bar magnet...
When not in use, the hinges allowed the two pieces of wood to fold back up tightly against the cabinet, where they were held in place by magnets (磁铁). Jeanie called her invention “the Kiddie Stool”. Jeanie’s Kiddie Stool won first place in her school’s contest. Two years later,...
In an experiment,researchers were able to use powerful magnets to disturb this area of the brain and make people temporarily less moral.The study discovers that our sense of right and wrong isn't just based on upbringing,religion or philosophy-but also by the biology of our brains. ...
Physicists observed a very strange new type of behavior in a magnetic material when it’s heated up. When the temperature rises, the magnetic spins ‘freeze’ into a static pattern, a phenomenon that normally occurs when the temperature decreases. Their findings were published inNature ...
The first message where I was told where these people were getting my number was from a guy wanting to go on a bike ride who used “OKC” in the message, which led to me thinking it was from a guy from Oklahoma City I met at a meetup. By Friday, I had learned from a guy who...
only going let's say 7mph over and according toReader's Digest, that's enough for a ticket. Also, on the opposite end of the flashier car spectrum, it's the the older, less well-kept cars that can be magnets for police as well even if it's just a few miles over the speed ...