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Many people are nervous when talking with strangers, and it's hard to guess their minds. At this time, maybe you need a pair of "social X-ray" glasses to help you see through each other's true thoughts.
Researchers at the MIT Media Lab in the United States have developed such a pair of glasses that can "see through" people's hearts. A rice-size built-in camera is attached to the frame and is connected by wires to a small computer that the wearer carries with him.
When talking with people, the built-in camera can capture the other's demeanor and movement, even the most subtle facial expressions. Then, these signals are transmitted to the computer, and the computer analyzes and compares the data stored in the database to determine the mood of the other party.
After making a judgment, the computer informs the wearer of the result through a light emitting diode (LED) lamp or earphone on the lens.
If the red light is on the lens, it means that the other person does not like to talk to you; if it is a yellow light, it means that the other party has a certain interest; the green light means that the other side talks with you very well.
To test the "social X-ray" glasses, the British New Scientist weekly journalist Sally Eddie came to the designer Rosalind Picard's office.
In an article published in the New Scientist, Eddy wrote: "Rosa Linde Picard's eyes widened. This can't blame her. We are sitting in the MIT Media Lab. My questions are extremely acute. At last, I began to doubt that I may be the most astute journalist she has ever met."
"Then, Picard handed me a special pair of glasses. I took it for a moment and I realized that I was completely wrong. The expression admired on her face is actually doubt and negation. What's worse, she feels I'm not boring. I was absent-minded. I understood this because a voice was whispering to me through headphones, telling me that Picard's "diffused" and "different opinion". At the same time, the red light flashing on the right lens warned me Don't keep talking. It's like I have a sixth sense."
Picard said that "social X-ray" glasses were originally developed for patients with autism who had difficulties in communicating, but the researchers found through experiments that the accuracy of ordinary people through the facial expression to determine the mental state is only 54%, and "social X-ray" The current correct rate of glasses can reach 64%, and it may further increase in the future. This means that this type of eyeglasses can not only help people with autism but also be useful to ordinary people.
"People are not very good at this (interpretation of expression)," Picard said.
She hopes that one day, she can design an "augmented reality" spectacles on the basis of "social X-rays" glasses, with text prompts on the lenses to tell the wearer what the other person is thinking.
"Social X-ray" glasses also raise some concerns.
Technology blogger Elizabeth Armstrong Moore said that the extra "sixth sense" will expose the truth that the other person wants to hide.
Low carbon steel is the most common form, and it's very malleable and ductile. Medium carbon steel balances ductility as well as strength for excellent wear resistance. High carbon steel is exceptionally strong, while ultra-high carbon steel can be tempered to even greater hardness but no malleability.
As the percentage of carbon gets larger, steel can become harder and stronger through heat-treating. Carbon steel is usually heated to change the mechanical properties of steel, usually ductility, hardness, strength, and resistance of impact. Increasing the carbon content of carbon steel makes it harder and stronger, but reduces the steel`s ability to be welded, making it more brittle.
Carbon steel plate is most often used for structural purposes such as buildings, yet it has the flexibility to be worked into ornate designs. Low carbon steel sheet (wrought iron) is typically used for fences, chain links, gates, and railings. Structural Steel (medium carbon steel) is used in cars, refrigerators, washing machines, buildings, and bridges. The steel sheets are normally made up of medium carbon steel.