Sensor

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Sensor
TECHNICAL INFORMATION
Function

Detection

A Sensor is a device that detects and responds to some type of input from the physical environment.

Overview

Sensors can detect a number of stimuli including life signs, physiology of people, structures, spaceships and their shields and weapons, energy fields, infrared heat, types of radiation, including Cosmic radiation and much more. (SGA: "Rising", SG1: "Last Stand", SGA: "Epiphany", SG1: "Nemesis", "The Enemy Within", "Full Alert")

Ancient

The Ancients had sensors which could track spaceships across a galaxy. (SGA: "Letters From Pegasus") They had short range Life signs detectors which not only could sense nearby life signs but also detect radiation and provide medical scanning. (SGA: "Rising", "Underground", "Runner") Their sensors could be overloaded by intense energy bursts such as from Nuclear bombs. (SGA: "The Siege, Part 2")

Asgard

The Asgard have advanced sensors which can detect when people aid one another or remark certain phrases or words. (SG1: "Thor's Hammer") Their sensors were capable of penetrating Goa'uld shields to scan inside ships. (SG1: "Revelations")

Goa'uld

Goa'uld sensors could be blinded with radiation, isotopes injected into people would shield them from being detected and intense radiation would hide whole ships. (SG1: "Fallen", "Enemies") The sensors could scan inside objects to determine their composition. (SG1: "Fail Safe")

Tok'ra

The Tok'ra used sensors to help hide themselves. Tok'ra Sensor devices detected ships approaching their bases. (SG1: "Last Stand") They also have biosensors to scan individual physiology. (SG1: "Upgrades")

Wraith

Hive ships are keyed to their sensors, coming online when in presence of Wraith. (SGA: "Misbegotten") Hive ship sensors have a limited range. (SGA: "Allies") Their sensors could be blinded by Nuclear bomb blasts. (SGA: "The Siege, Part 3") With increased powers, the sensitivity of Wraith sensors can be increased that they can detect cloaked vessels. (SGA: "Enemy at the Gate")

Tau'ri

The Tau'ri had their own types of sensors including Geiger counters and Thermographic sensors. (SG1: "The Enemy Within", "Grace", "Avatar") They create their own based on Goa'uld designs and later obtained Asgard versions. (SG1: "Prometheus", "Endgame", SGA: "The Intruder") These sensors could be blocked when near Black holes. (SG1: "The Pegasus Project")