, however, make the first useful one.Joseph Swan of England made the first lightbulb in 1878.Lightbulbs... itglows(发光). Swan's filament is made from cotton. It produced a glow in a glass for 14 hours ……

HERE’S something that might surprise you. Thomas Edison did not invent the lightbulb (灯泡)! He did, however, make the first useful one.Joseph Swan of England made the first lightbulb in 1878 ……

Hussam Al-Attar has made electricity (电) to light up his family’s tent. He and his family have... at a market, the 15-year-old Hussam Al-Attar has made electricity (电) to light up his family&rsquo ……

牛顿”自制发电机点亮难民营Using two fans he found at a market, the 15-year-old Hussam Al-Attar has made...-Attar has made electricity to light up his family’s tent. He and his family have been living ……

楼道变成了“星际隧道”杭州长江实验小学 四 (1) 版 赵梓羽There is a special corridor (楼道) in my school. All of the students like to walk through this corridor to their classrooms. Why? Teachers made it into an “interstellar ……

;s their first experience leaving home for an extended (长期的) period of time. You might believe you’re... college students move into dorms. For those staying in their own apartments for the first time ……

. For many students, it’s their first experience leaving home for an extended (长期的) period of time... of the classroom. For many students, it’s their first experience leaving home for an extended (长期 ……

dynasties. It is made of clay or bronze.The 2,008 fou drums are more than regular square drums. The top... such as “All are brothers within the four seas” from his analects.In the center were 897 dancers who simulated ……

its first probe to the moon, according to the Commission of Science, Technology and Industry... percent. For those of you who plan to study something in addition to your major, you might give ……

't unfaithfulness or cruelty, it's lack of interest. A woman who has been taken for granted by her... be surprising.Unfortunately, there seems to be a shortage of stupid men who might fall for this kind ……

on an average use of three hours a dayChina is not the first country to take this measure. Australia ……

since the world’s first cellphone (手机) call was made in New York. Martin Cooper, who made the call...April 3 marked 50 years since the world’s first cellphone (手机) call was made in New York. Martin ……

LOUISVILLE, Kentucky — Kentucky surgeons who implanted the world's first self-contained artificial... installed a second such device in a 70-year-old man.The self-contained mechanical heart is the first major ……

Small changes could cut your CO2 by 60 percent. Here are 21 things you can do to make a big difference to save our planet:1. Change your lightbulbsReplace regular incandescent lightbulbs with compact fluorescent ones. ……

(WHO) announced on May 7 that it will give emergency use authorization to the COVID-19 vaccine made... globally. The move marks the first time any Chinese-made vaccine has received emergency authorization ……