Radar was a technology used to detect objects in 20th century Earth.
In 2268, as he was assigning the USS Enterprise to study the past via a slingshot maneuver, Antonio Delgado told James Kirk the ship's deflectors could be used to deflect radar scans and make the Enterprise invisible. (DTI novel: Forgotten History)
External links
- Radar article at Memory Alpha, the wiki for canon Star Trek.
- Radar article at Wikipedia, the free encyclopedia.