For the Catullan space hippy, please see Tongo Rad.

The rad was a unit of radiation dose. This form of measurement was still used by the Federation during the 24th century.

Comparative list of radiation doses

1 millirad = 1/1,000 rad
1000 millirads = 1 rad
  • In 2371, Miles O'Brien began repeatedly time shifting a few hours into the future due to the combination of cloaked Romulan warbirds and an accident on the station in which he was infected with delta-series radioisotopes. During one of O'Brien's time shifts, he witnessed the destruction of Deep Space 9. To control his time shifting and to discover how DS9 was destroyed, he had Dr. Bashir outfit him with a device to inject him with a 2 rad dose of delta-series radioisotopes, which eventually led to his death. He was later "replaced" by a future Miles O'Brien. (DS9: "Visionary")
  • In 2370, while trying to evade a rogue Borg ship, Beverly Crusher, in command of the Enterprise-D, took the ship into the corona of a star using metaphasic shielding. The Enterprise however couldn't stay in the star for long and Ensign Taitt informed Crusher that the radiation from the star was at 10,000 rads and rising. The Enterprise was later able to destroy the approaching Borg ship with the help of a solar flare. (TNG: "Descent, Part II")

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