No. X-rays are electromagnetic waves that can penetrate opaque objects such as wood, cardboard and leather. The screening device can show different colored images on the screen depending on how much X-rays are absorbed by the object.
Simply put, orange represents organic materials, such as food and plastics; books and ceramics are shown in green; and metals are shown in blue. At this point, a quick look at the X-ray scan's fluoroscopic image allows the screener to draw on a wealth of experience to determine whether there is contraband.
Expanded:
p>Only properly trained personnel should be used to install and use screening machines. Radiation safety rules must be strictly followed at all times to avoid radiation damage.
1) Use only properly trained personnel to install and use security screening machines.
2) Only technicians should remove covers or protective components during maintenance.
3) Do not use X-ray security screening equipment outdoors.
4) The security screening machine must be operated at the specified operating voltage. The voltage used must be checked before the equipment is used.
5) The security screening machine must be well grounded. The equipment socket used at the installation site must have a grounding terminal.
6) If there is an area where the voltage fluctuates more than specified, it is recommended that an AC voltage regulator be used.
7) Do not connect any electronic component that is not part of the X-ray safety inspection equipment to the power distributor of the X-ray safety inspection equipment.
8) Any improper modification may damage the X-ray safety inspection equipment. The user is prohibited from making improper modifications to the equipment.
9) The security screening machine can only be used to check items, and it is strictly prohibited to use it to check human beings or animals.
10) Please do not turn on the equipment that has not been used for more than 6 months, the ray generator must be restarted by a professional.
11) It is forbidden to sit or stand on the conveyor belt.
Baidu Encyclopedia-Security Screening Machine