Final answer:
Enclosed airport symbols represent functional areas like security gates, which can detect metals and indicate their height above the floor. They are essential for airport navigation and ensuring passenger safety.
Step-by-step explanation:
A student inquired about the meaning of enclosed airport symbols. These symbols serve as visual cues within the airport environment and play a crucial role in the facilitation of passenger flow and navigation. Enclosed security symbols specifically have a functional purpose, for example, the security gate symbol indicates that passengers are entering an area where metal detection and safety checks will occur. This security gate can detect metals and also indicate their approximate height above the floor, contributing to a more efficient security process.
Airport symbols can also reflect broader aspects of communication and symbolism within society. For instance, symbols can convey strong messages when used out of the ordinary context. A symbol that is typically associated with a specific meaning or function, like the well-known peace sign, can take on new significance and convey a different or enhanced message when used differently. Symbolic expression at airports through signs and symbols must be clear and international in nature to maintain safety and order for travelers of diverse backgrounds.