Time balls
Esquema
Jerarquía
Built Environment (Hierarchy Name) > Single Built Works (Hierarchy Name) > single built works (Built Environment) > <single built works by specific type> > <single built works by function> > communications structures
Descripción
Visual time signals, generally including a ball that is mounted on a tall pole or rod set up on a tower or other prominent location and that is arranged to drop suddenly at a predetermined moment, such as noontime; used, for example, by ships at anchor.
URI original del concepto
Otros términos
- tijdballen [nl]
- globos horarios [es]
- time ball [en]
- balls, time [en]
- time-balls [en]
- timeball towers [en]
- towers, timeball [en]
- tijdbal [nl]
- globo horario [es]