In 1968, scientist Spencer Silver was researching adhesives (黏合剂) when he discovered one that stuck to things, but could then be easily taken away. For years he tried to find a use for his invention. At the same time, another scientist named Art Fry was singing. He used small pieces...
One of the things he discovered was that the Chinese used paper money. In western countries, people did not use paper money until the 15th century. However, people in China be In the 13th century, the famous Italian traveler, Marco Polo, traveled a long way to China. During his stay in...
Forthis reason, they were called inert gases(惰性气体). They werealso listed under Group 0 in theold periodic table because scientists believed that the gases have zero valence(价)electrons in their outer shell. This was later proven to be untrue when somenoble gas compounds were discovered. ...
难句分析原文 It seems that everybody does not agree on when theChinese discovered the compass, but everyone does agree that itwas discovered in the Qin Dynasty.译文似乎每个人就中国人何时发现指南针这件事不能达成一致意见,但每个人都同意它在秦朝被发现。分析本句是并列复合句。but连接两个并列分句,...
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....
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 ...
2. Later on, in the process of recovery, look at us very sadly and with some fear when she discovered that she had wet her bed again. For 1. I realized that it was a protective mechanism. She was lying because she wished it were not true. Having read the article about children and...
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,...
while sober. Pfaff decided to leave Hole permanently in the wake of Kurt Cobain’s death and returned to Seattle to pack up her belongings in June 1994. Two days after she arrived in Seattle, however, a friend discovered Pfaff dead in her apartment. Her cause of death was ruled as acute...
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...