Thomas Edison received a patent(专利) for his kinetoscope(电影放映机) on August31, 1887. It was a machine for viewing moving pictures. Edison had hoped to combine his no invention with the phonograph(留声机), which he had invented 10 years earlier. He thought that people would like to watch moving pictures that went along with the sound. He was not able to make them work together. The kinetoscope, however, was a popular attraction by itself. A person looked through small holes in a box-like machine and saw pictures in action. One of the first films made showed a man sneezing.

    A problem with this invention was that only one person could view the moving pictures at a time. By 1891, Edison had invented a projector that showed the film on a screen. Many people could watch together.

    In 1893, Edison built a motion-picture studio. He made over 300 silent films. Most of them were short. That was because the pictures flashed, or shook a lot. It was hard for people to watch more than 10 minutes at a time.

    The first films were mostly of real events. They would show famous people walking somewhere, cars on a street, burning houses, and other news stories. Then comedies and short dramas were made.

    Edison's movie studio closed in 1918. By then other companies were also making films. Better cameras were made. Sound was added. Then color came along. Today, movies are among the most popular forms of entertainment.

    Why do people lie? Many psychologists agree that it can start from childhood? There are various reasons why children make false statements. They usually tell untruthful stories to cover up the mistakes that they have done in the past. Lying is also a way to avoid receiving punishments from parents. If parents fail to reprimand their children for making up false stories, then there is a possibility that they will continue to lie during their teenage years.

    Teenagers lie because they want to be accepted by their friends. This is the main reason why they create stories that are not true just to become presentable and acceptable to other people. In some instances, teenagers tell untruthful statements to avoid criticisms from their families and friends.

    As teenagers grow, lying becomes one of your habits. Their knowledge on making up untruthful stories becomes more developed. People lie in workplaces if they fail to meet the deadlines and if they fail to accomplish and do their tasks efficiently. Some of the common lies made in workplaces are getting sick and having emergencies at home. The danger involved in frequent lying is when it, becomes a character. Frequent lying causes the development of the condition known to doctors as pathological（病态的）lying.

    Pathological lying is a mental health condition, which is associated with individuals who have the urge to tell untruthful statements. Patients suffering from it make up stories about everything and anything. These individuals lie to meet the standards of other people who they want to please. These patients deceive other people because it gives them an unexplained pleasure. One of the best ways of treating pathological liar is to help them tell true statements and stories at all times. This may be hard for them, but as they are accustomed to it, they will start to realize that they will be more accepted by their families and other people if they stop themselves from making up for stories

    Recently, some Chinese experts advise people to be more careful about making a "V" gesture (手势) while taking a photo, because the fingerprints may be stolen.

    It is possible. If the distance between the person and a smartphone is less than half a meter, the possibility of the fingerprint being stolen will be bigger. Having fingerprints stolen can cause a lot of difficulty, as they are used in many things, including ID cards, passports and online payments. So it's a must to pay attention to their protection and avoid them being spread on the Internet.

    This kind of discussion was first raised by a Japanese research center, the National Institute of Informatics.

    ZengQiaoyi, 19, who likes sharing selfies (自拍) on WeChat, said she is also worried about it. She said she seldom posts pictures with "V" gestures and most pictures she shares are made to be not so clear by certain software. "I blur backgrounds in selfies, hoping to hide my location," she added.

    Tan Tieniu, a scientist, said at the 2016 China National Computer Congress that using fingerprints instead of passwords or voice identification is far from safe, compared with face recognition (辨认).

    But a police officer from Jiangsu province, said locals don't need to be overly anxious, because the cameras of many cellphones are not clear enough, and the shooting distance of most photos taken by cameras is too far.

    When 12 girls from San Fernando high school in California received a grant (助学金) to develop an invention to solve a real-world problem, they decided to create a solar-powered shelter. Now for over a year, the girls have been working after school and over the winter and spring breaks to complete their project. "They have this amazing drive that I've never seen before," said Violet Mardirosian, a math teacher at San Fernando High. "I thought at the beginning that maybe some of them would give up, saying 'I didn't expect this much work,' but they don't. They're just working hard and they're not giving up."

    Living in a low-income community (社区), the girls have seen the problem of homelessness first-hand, which is why they chose that population to create a product for. Many of them are also from immigrant families and hope the solar-powered shelter might help refugees (难民). Seventeen-year-old Maggie Mejia said that while she had no engineering experience, the girls figured out as a team how to create the prototype (雏形), using how-to videos and books that taught them how to code. But the most important lesson she's learned over the course of the project isn't technical. "I've learned a lot about helping others, helping the community and showing a better world to other people," she said.

    The girls have been invited to MIT to show their invention. Mardirosian says all the participating students have expressed interest in going into STEM (science, technology, engineering, mathematics) fields and that students from lower grades are already expressing interest in being involved next year. She says, "Many of them didn't think about engineering before. They thought maybe they're not made out to be an engineer. But working together, now they realize they're all needed in this field. Everyone has found their importance in this picture."

When we meet someone for the first time, we usually get a vague sense of what kind of person they are by the way they shake hands, talk, or walk. In the age of social networking, however, first impressions are sometimes made even before we actually meet someone in person—that is, by looking at their profile photo.

    According to a recent study, these social images say a lot about our personality. In the study, presented in a paper at the International AAAI Conference on Web and Social Media, a group of researchers from the University of Pennsylvania in the US used software to analyze the profile pictures of 66,000 users of US social platform Twitter and 3,200 of their tweets. At the same time, about 434 participants were asked to complete a survey about their personality type. The researchers wanted to find out if there was a connection between personality traits—like openness, extroversion, and neuroticism(神经质)—and a person's profile picture.

    According to the results, open people are more likely to pose in an unusual way and use objects such as glasses or a guitar in their profile photo because they enjoy new and exciting experiences. Meanwhile, neurotic people often hold back their negative emotions. They try to avoid showing their face；Instead, they use an image of something like a pet, a car or a building.

    Apart from the objects in profile pictures, the colors used in them also give us some hints about the photo's owner. For example, extraverts were found to have the most colorful profile images, as they want to emphasize their personality and show themselves off, the researchers wrote.

    Although social media photos "usually represent an extension of one's self, they also allow a user to shape his or her own personality and idealized view," according to the researchers. So, when choosing a profile photo, maybe we should ask ourselves first what kind of image we'd like to convey. After all, first impressions always last.

    Andrew Ritchie, inventor of the Brompton folding bicycle, once said that perfect portable bike would be "like a magic carpet... You could fold it up and put it into your pocket or handbag". Then he paused: "But you'll always be limited by the size of the wheels. And so far no one has invented a folding wheel."

It was a rare — indeed unique — occasion when I was able to put Ritchie right. A 19th-century inventor, William Henry James Grout, did in fact design a folding wheel. His bike, predictably named the Grout Portable, had a frame that was divided into two and a larger wheel that could be separated into four pieces. All the bits fitted into Grout's Wonderful Bag, a leather case.

    Grout's aim: to solve the problems of carrying a bike on a train. Now doesn't that sound familiar? Grout intended to find a way of making a bike small enough for train travel: his bike was a huge beast. And importantly, the design of early bicycles gave him an advantage: in Grout's day, tyres were solid, which made the business of dividing a wheel into four separate parts relatively simple. You couldn't do the same with a wheel fitted with a one-piece inflated(充气的) tyre.

    So, in a 21st-century environment, is the idea of the folding wheel dead? It is not. A British design engineer, Duncan Fitzsimons , has developed a wheel that can be folded into something like a slender ellipse(椭圆). From beginning to end, the tyre remains inflated.

    Will the young Fitzsimons's folding wheel make it into production? I have no idea. But his inventiveness shows two things. First, people have been saying for more than a century that bike design has reached its limit, except for gradual advances. It's as silly a concept now as it was 100 years ago: there's plenty still to go for. Second, it is in the field of folding bikes that we are seeing the most interesting inventions. You can buy a folding bike for less than £1,000 that can be knocked down so small that can be carried on a plane ——minus wheels, of course ——as hand baggage.

    Folding wheels would make all manner of things possible. Have we yet got the magic carpet of Andrew Ritchie's imagination? No. But it's progress.