How can the ceramic knife "bravely" security check

With the news that the "Beijing real name system for the purchase of kitchen knives" has become popular, many netizens joked that it would be difficult for them to cook. Another message triggered a visual focus - "a ceramic knife can survive the security tester." For a time, many netizens have started to develop experiments. A netizen in Beijing stated that he successfully sat from Fuxingmen Subway Station to Datun Station. Some netizens broke the news that ceramic knives can even pass through airport security. After that, some netizens made an analysis: Although the ceramic tool was once checked out, the ceramic tool displayed on the X-ray machine showed a riveted item or a thin line. The security personnel could not check if they did not look closely. . For a time, the magical "stealth" function of the ceramic knife was pushed to the tip of the wind.

Relevant personnel responsible for security inspections of the Beijing subway said that different items appeared on the screen of the security instrument in different colors. Taking ** as an example, the ** shell is displayed in blue on the screen and the warhead is black, while it is red if it is contained in the **, which is highly dangerous. In addition, items such as controlled knives are displayed in blue, while plain paper products are displayed in light green. Therefore, even if the parcel is severely restricted, as long as it is a dangerous product, it will not escape the “eye” of the security instrument. Although there is no clear publicity of whether ceramic tools are prohibited on the subway. However, if security inspections are found, passengers will still carry out inspections with ceramic cutters and discourage passengers from entering the subway. This is to ensure operational safety.

Due to the inspection of security devices by netizens, subway workers encountered a lot of such “stealing passengers”. Of course, most of the ceramic knives found are used as gifts or in the kitchen of your home.

At the Capital Airport’s security inspection equipment, the results of the experiment also showed no suspense. According to the Capital Airport, passengers are generally required to pass 4 levels of security: The first is a document verification system, which mainly validates second-generation ID cards and boarding passes. The safety gate is the second pass. It mainly detects the metal objects on the passengers. If the metal objects are on the upper body, the safety door will illuminate the upper lights, prompting the security inspectors to check their positions. This is followed by a hand inspection, ie a security checker holding a test stick—usually a woman. The last pass is the X-ray machine. In the case of such inspections, it is impossible for the ceramic cutter to achieve "stealth" at all.

Professionals told the reporter that many passengers believe that the X-ray machine can only detect metal objects and “kick and polish” tools made of ceramics. However, this is not the case. Today's X-ray machines are more advanced and can provide passengers with multiple perspectives to form stereoscopic images. Take the X-ray machine used at the Capital Airport as an example. The X-ray machine uses multi-source detection. Items in the baggage will form body images on the screen of the security inspectors, and the colors will vary. The X-rays are absorbed by the objects and form tiny shadows, and the sensing device inside the machine enlarges the shadows and displays them on a computer screen. All the items in the body can be detected.

The ceramic knife itself is well-loved because it has the exquisite appearance of arts and crafts, and it is green and environmentally friendly. In the gift market in Europe and America, the ceramic knife is a very popular gift. China Porcelain Library reminds consumers here that although ceramic knives have many advantages such as being non-toxic, harmless, and green, they also cannot escape the characteristics of ceramic products that cannot be dropped. Must not be used to cut more rigid bones.