Detection signal
An identification signal (abbreviation: ES , also: identification mark ) is a signal that is used to identify a person , a living being or a thing as clearly as possible . For example, two people who do not know each other and who are planning a rendezvous can agree to wear a red rose as a recognition signal. Emblems , such as the Tatzenkreuz the Bundeswehr , are important identifiers and are used for identification of belonging to a state .
police
When the police are on duty, you can often see geometric symbols such as squares or circles on the backs of the officers . These serve to identify the function, task or unit of the police officer and make it easier for colleagues to assign them individually, which would otherwise be difficult due to the uniformity.
military
In principle, uniforms , coats of arms or flags are important military identification signals that are used to identify soldiers, animals, vehicles, ships or aircraft. Slogans are especially used to identify yourself as a " friend " when you approach them. An alternative is to show signal flags using the flag alphabet or colored flares that are shot into the air by signal pistols . In addition to open signals, there are also secret detection signals (see also: ES slider ).
Animal kingdom
In the animal kingdom, colors or fragrances serve as identification signals. Examples are conspicuous colors such as " poison green ", with which a poison dart frog can be recognized as dangerous, or the scent of a beaver , with which it is recommended for sexual partners and marks its territorial boundaries.
Individual evidence
- ↑ Abbreviations of the Wehrmacht ( Memento of the original from February 4, 2015 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. , accessed February 16, 2015
