What did the security X-ray machine see?

Anyone who passes the security check can see it When each courier passed the X-ray machine, there was nothing in the package. The security inspection machine can present images of different colors on the screen according to the degree of absorption of X-rays by objects. Articles entering the X-ray security inspection machine are judged according to their shapes and colors. Food, heavy metals, clothes, etc. It's orange, ordinary knives are blue, and black is something that the machine can't recognize. Passengers need to open their luggage for manual inspection.

Generally speaking, orange represents organic matter, such as food, plastic and so on. Books, ceramics, etc. They are all displayed in green, while the metal is displayed in blue, which ensures the quality of security inspection. No matter where criminals hide their tools, as long as they are photographed with "golden eye", their true colors will be exposed immediately.

The radiation of the security X-ray machine is very small.

The use of the security X-ray machine is to put the luggage into the article scanning X-ray machine. After the inspection, the passengers can take back their luggage and leave. X-ray machine used for machine inspection of articles uses X-rays to pass through objects to obtain X-ray images, which are displayed on the computer screen through computer processing to identify the images and evaluate the safety of the objects.

Although the principle is similar to that of hospital X-ray inspection, the dose of X-ray machine used for security inspection should be less than the amount of X-ray irradiated by human body. Because the X-ray machine for security inspection only needs to look roughly at what shape it is. The medical X-ray machine needs to see the human body clearly, so the radiation dose is large.